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The growdata transaction is used by growfs operations to increase the data size of the filesystem. Part of this sequence involves extending the size of the last preexisting AG in the fs, if necessary. This is implemented by freeing the newly available physical range to the AG. tr_growdata is not a permanent transaction, however, and block allocation transactions must be permanent to handle deferred frees of AGFL blocks. If the grow operation extends an existing AG that requires AGFL fixing, assert failures occur due to a populated dfops list on a non-permanent transaction and the AGFL free does not occur. This is reproduced (rarely) by xfs/104. Change tr_growdata to a permanent transaction with a default log count. This increases initial transaction reservation size, but growfs is an infrequent and non-performance critical operation and so should have minimal impact. Reported-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> [darrick: add a comment to the assert] Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
893 lines
29 KiB
C
893 lines
29 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
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* Copyright (C) 2010 Red Hat, Inc.
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* All Rights Reserved.
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*/
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#include "xfs.h"
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#include "xfs_fs.h"
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#include "xfs_shared.h"
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#include "xfs_format.h"
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#include "xfs_log_format.h"
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#include "xfs_trans_resv.h"
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#include "xfs_mount.h"
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#include "xfs_da_format.h"
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#include "xfs_da_btree.h"
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#include "xfs_inode.h"
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#include "xfs_bmap_btree.h"
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#include "xfs_ialloc.h"
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#include "xfs_quota.h"
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#include "xfs_trans.h"
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#include "xfs_qm.h"
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#include "xfs_trans_space.h"
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#include "xfs_trace.h"
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#define _ALLOC true
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#define _FREE false
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/*
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* A buffer has a format structure overhead in the log in addition
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* to the data, so we need to take this into account when reserving
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* space in a transaction for a buffer. Round the space required up
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* to a multiple of 128 bytes so that we don't change the historical
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* reservation that has been used for this overhead.
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*/
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STATIC uint
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xfs_buf_log_overhead(void)
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{
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return round_up(sizeof(struct xlog_op_header) +
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sizeof(struct xfs_buf_log_format), 128);
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}
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/*
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* Calculate out transaction log reservation per item in bytes.
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*
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* The nbufs argument is used to indicate the number of items that
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* will be changed in a transaction. size is used to tell how many
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* bytes should be reserved per item.
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*/
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STATIC uint
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xfs_calc_buf_res(
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uint nbufs,
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uint size)
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{
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return nbufs * (size + xfs_buf_log_overhead());
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}
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/*
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* Per-extent log reservation for the btree changes involved in freeing or
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* allocating an extent. In classic XFS there were two trees that will be
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* modified (bnobt + cntbt). With rmap enabled, there are three trees
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* (rmapbt). With reflink, there are four trees (refcountbt). The number of
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* blocks reserved is based on the formula:
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*
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* num trees * ((2 blocks/level * max depth) - 1)
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*
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* Keep in mind that max depth is calculated separately for each type of tree.
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*/
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uint
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xfs_allocfree_log_count(
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struct xfs_mount *mp,
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uint num_ops)
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{
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uint blocks;
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blocks = num_ops * 2 * (2 * mp->m_ag_maxlevels - 1);
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if (xfs_sb_version_hasrmapbt(&mp->m_sb))
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blocks += num_ops * (2 * mp->m_rmap_maxlevels - 1);
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if (xfs_sb_version_hasreflink(&mp->m_sb))
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blocks += num_ops * (2 * mp->m_refc_maxlevels - 1);
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return blocks;
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}
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/*
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* Logging inodes is really tricksy. They are logged in memory format,
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* which means that what we write into the log doesn't directly translate into
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* the amount of space they use on disk.
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*
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* Case in point - btree format forks in memory format use more space than the
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* on-disk format. In memory, the buffer contains a normal btree block header so
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* the btree code can treat it as though it is just another generic buffer.
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* However, when we write it to the inode fork, we don't write all of this
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* header as it isn't needed. e.g. the root is only ever in the inode, so
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* there's no need for sibling pointers which would waste 16 bytes of space.
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*
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* Hence when we have an inode with a maximally sized btree format fork, then
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* amount of information we actually log is greater than the size of the inode
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* on disk. Hence we need an inode reservation function that calculates all this
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* correctly. So, we log:
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*
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* - 4 log op headers for object
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* - for the ilf, the inode core and 2 forks
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* - inode log format object
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* - the inode core
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* - two inode forks containing bmap btree root blocks.
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* - the btree data contained by both forks will fit into the inode size,
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* hence when combined with the inode core above, we have a total of the
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* actual inode size.
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* - the BMBT headers need to be accounted separately, as they are
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* additional to the records and pointers that fit inside the inode
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* forks.
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*/
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STATIC uint
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xfs_calc_inode_res(
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struct xfs_mount *mp,
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uint ninodes)
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{
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return ninodes *
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(4 * sizeof(struct xlog_op_header) +
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sizeof(struct xfs_inode_log_format) +
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mp->m_sb.sb_inodesize +
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2 * XFS_BMBT_BLOCK_LEN(mp));
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}
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/*
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* Inode btree record insertion/removal modifies the inode btree and free space
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* btrees (since the inobt does not use the agfl). This requires the following
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* reservation:
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*
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* the inode btree: max depth * blocksize
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* the allocation btrees: 2 trees * (max depth - 1) * block size
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*
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* The caller must account for SB and AG header modifications, etc.
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*/
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STATIC uint
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xfs_calc_inobt_res(
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struct xfs_mount *mp)
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{
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return xfs_calc_buf_res(mp->m_in_maxlevels, XFS_FSB_TO_B(mp, 1)) +
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xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1),
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XFS_FSB_TO_B(mp, 1));
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}
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/*
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* The free inode btree is a conditional feature. The behavior differs slightly
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* from that of the traditional inode btree in that the finobt tracks records
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* for inode chunks with at least one free inode. A record can be removed from
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* the tree during individual inode allocation. Therefore the finobt
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* reservation is unconditional for both the inode chunk allocation and
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* individual inode allocation (modify) cases.
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*
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* Behavior aside, the reservation for finobt modification is equivalent to the
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* traditional inobt: cover a full finobt shape change plus block allocation.
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*/
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STATIC uint
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xfs_calc_finobt_res(
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struct xfs_mount *mp)
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{
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if (!xfs_sb_version_hasfinobt(&mp->m_sb))
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return 0;
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return xfs_calc_inobt_res(mp);
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}
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/*
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* Calculate the reservation required to allocate or free an inode chunk. This
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* includes:
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*
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* the allocation btrees: 2 trees * (max depth - 1) * block size
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* the inode chunk: m_ialloc_blks * N
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*
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* The size N of the inode chunk reservation depends on whether it is for
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* allocation or free and which type of create transaction is in use. An inode
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* chunk free always invalidates the buffers and only requires reservation for
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* headers (N == 0). An inode chunk allocation requires a chunk sized
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* reservation on v4 and older superblocks to initialize the chunk. No chunk
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* reservation is required for allocation on v5 supers, which use ordered
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* buffers to initialize.
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*/
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STATIC uint
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xfs_calc_inode_chunk_res(
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struct xfs_mount *mp,
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bool alloc)
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{
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uint res, size = 0;
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res = xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1),
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XFS_FSB_TO_B(mp, 1));
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if (alloc) {
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/* icreate tx uses ordered buffers */
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if (xfs_sb_version_hascrc(&mp->m_sb))
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return res;
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size = XFS_FSB_TO_B(mp, 1);
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}
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res += xfs_calc_buf_res(mp->m_ialloc_blks, size);
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return res;
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}
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/*
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* Various log reservation values.
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*
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* These are based on the size of the file system block because that is what
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* most transactions manipulate. Each adds in an additional 128 bytes per
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* item logged to try to account for the overhead of the transaction mechanism.
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*
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* Note: Most of the reservations underestimate the number of allocation
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* groups into which they could free extents in the xfs_defer_finish() call.
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* This is because the number in the worst case is quite high and quite
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* unusual. In order to fix this we need to change xfs_defer_finish() to free
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* extents in only a single AG at a time. This will require changes to the
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* EFI code as well, however, so that the EFI for the extents not freed is
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* logged again in each transaction. See SGI PV #261917.
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*
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* Reservation functions here avoid a huge stack in xfs_trans_init due to
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* register overflow from temporaries in the calculations.
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*/
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/*
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* In a write transaction we can allocate a maximum of 2
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* extents. This gives:
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* the inode getting the new extents: inode size
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* the inode's bmap btree: max depth * block size
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* the agfs of the ags from which the extents are allocated: 2 * sector
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* the superblock free block counter: sector size
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* the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
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* And the bmap_finish transaction can free bmap blocks in a join:
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* the agfs of the ags containing the blocks: 2 * sector size
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* the agfls of the ags containing the blocks: 2 * sector size
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* the super block free block counter: sector size
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* the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
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*/
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STATIC uint
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xfs_calc_write_reservation(
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struct xfs_mount *mp)
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{
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return XFS_DQUOT_LOGRES(mp) +
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max((xfs_calc_inode_res(mp, 1) +
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xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK),
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XFS_FSB_TO_B(mp, 1)) +
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xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) +
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xfs_calc_buf_res(xfs_allocfree_log_count(mp, 2),
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XFS_FSB_TO_B(mp, 1))),
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(xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) +
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xfs_calc_buf_res(xfs_allocfree_log_count(mp, 2),
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XFS_FSB_TO_B(mp, 1))));
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}
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/*
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* In truncating a file we free up to two extents at once. We can modify:
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* the inode being truncated: inode size
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* the inode's bmap btree: (max depth + 1) * block size
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* And the bmap_finish transaction can free the blocks and bmap blocks:
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* the agf for each of the ags: 4 * sector size
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* the agfl for each of the ags: 4 * sector size
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* the super block to reflect the freed blocks: sector size
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* worst case split in allocation btrees per extent assuming 4 extents:
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* 4 exts * 2 trees * (2 * max depth - 1) * block size
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*/
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STATIC uint
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xfs_calc_itruncate_reservation(
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struct xfs_mount *mp)
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{
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return XFS_DQUOT_LOGRES(mp) +
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max((xfs_calc_inode_res(mp, 1) +
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xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) + 1,
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XFS_FSB_TO_B(mp, 1))),
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(xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) +
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xfs_calc_buf_res(xfs_allocfree_log_count(mp, 4),
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XFS_FSB_TO_B(mp, 1))));
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}
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/*
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* In renaming a files we can modify:
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* the four inodes involved: 4 * inode size
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* the two directory btrees: 2 * (max depth + v2) * dir block size
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* the two directory bmap btrees: 2 * max depth * block size
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* And the bmap_finish transaction can free dir and bmap blocks (two sets
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* of bmap blocks) giving:
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* the agf for the ags in which the blocks live: 3 * sector size
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* the agfl for the ags in which the blocks live: 3 * sector size
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* the superblock for the free block count: sector size
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* the allocation btrees: 3 exts * 2 trees * (2 * max depth - 1) * block size
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*/
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STATIC uint
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xfs_calc_rename_reservation(
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struct xfs_mount *mp)
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{
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return XFS_DQUOT_LOGRES(mp) +
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max((xfs_calc_inode_res(mp, 4) +
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xfs_calc_buf_res(2 * XFS_DIROP_LOG_COUNT(mp),
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XFS_FSB_TO_B(mp, 1))),
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(xfs_calc_buf_res(7, mp->m_sb.sb_sectsize) +
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xfs_calc_buf_res(xfs_allocfree_log_count(mp, 3),
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XFS_FSB_TO_B(mp, 1))));
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}
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/*
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* For removing an inode from unlinked list at first, we can modify:
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* the agi hash list and counters: sector size
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* the on disk inode before ours in the agi hash list: inode cluster size
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* the on disk inode in the agi hash list: inode cluster size
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*/
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STATIC uint
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xfs_calc_iunlink_remove_reservation(
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struct xfs_mount *mp)
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{
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return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) +
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2 * max_t(uint, XFS_FSB_TO_B(mp, 1), mp->m_inode_cluster_size);
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}
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/*
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* For creating a link to an inode:
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* the parent directory inode: inode size
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* the linked inode: inode size
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* the directory btree could split: (max depth + v2) * dir block size
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* the directory bmap btree could join or split: (max depth + v2) * blocksize
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* And the bmap_finish transaction can free some bmap blocks giving:
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* the agf for the ag in which the blocks live: sector size
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* the agfl for the ag in which the blocks live: sector size
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* the superblock for the free block count: sector size
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* the allocation btrees: 2 trees * (2 * max depth - 1) * block size
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*/
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STATIC uint
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xfs_calc_link_reservation(
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struct xfs_mount *mp)
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{
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return XFS_DQUOT_LOGRES(mp) +
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xfs_calc_iunlink_remove_reservation(mp) +
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max((xfs_calc_inode_res(mp, 2) +
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xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp),
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XFS_FSB_TO_B(mp, 1))),
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(xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) +
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xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1),
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XFS_FSB_TO_B(mp, 1))));
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}
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/*
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* For adding an inode to unlinked list we can modify:
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* the agi hash list: sector size
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* the on disk inode: inode cluster size
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*/
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STATIC uint
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xfs_calc_iunlink_add_reservation(xfs_mount_t *mp)
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{
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return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) +
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max_t(uint, XFS_FSB_TO_B(mp, 1), mp->m_inode_cluster_size);
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}
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/*
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* For removing a directory entry we can modify:
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* the parent directory inode: inode size
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* the removed inode: inode size
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* the directory btree could join: (max depth + v2) * dir block size
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* the directory bmap btree could join or split: (max depth + v2) * blocksize
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* And the bmap_finish transaction can free the dir and bmap blocks giving:
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* the agf for the ag in which the blocks live: 2 * sector size
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* the agfl for the ag in which the blocks live: 2 * sector size
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* the superblock for the free block count: sector size
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* the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
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*/
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STATIC uint
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xfs_calc_remove_reservation(
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struct xfs_mount *mp)
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{
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return XFS_DQUOT_LOGRES(mp) +
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xfs_calc_iunlink_add_reservation(mp) +
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max((xfs_calc_inode_res(mp, 1) +
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xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp),
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XFS_FSB_TO_B(mp, 1))),
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(xfs_calc_buf_res(4, mp->m_sb.sb_sectsize) +
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xfs_calc_buf_res(xfs_allocfree_log_count(mp, 2),
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XFS_FSB_TO_B(mp, 1))));
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}
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/*
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* For create, break it in to the two cases that the transaction
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* covers. We start with the modify case - allocation done by modification
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* of the state of existing inodes - and the allocation case.
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*/
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/*
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* For create we can modify:
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* the parent directory inode: inode size
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* the new inode: inode size
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* the inode btree entry: block size
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* the superblock for the nlink flag: sector size
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* the directory btree: (max depth + v2) * dir block size
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* the directory inode's bmap btree: (max depth + v2) * block size
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* the finobt (record modification and allocation btrees)
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*/
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STATIC uint
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xfs_calc_create_resv_modify(
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struct xfs_mount *mp)
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{
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return xfs_calc_inode_res(mp, 2) +
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xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) +
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(uint)XFS_FSB_TO_B(mp, 1) +
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xfs_calc_buf_res(XFS_DIROP_LOG_COUNT(mp), XFS_FSB_TO_B(mp, 1)) +
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xfs_calc_finobt_res(mp);
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}
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/*
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* For icreate we can allocate some inodes giving:
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* the agi and agf of the ag getting the new inodes: 2 * sectorsize
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* the superblock for the nlink flag: sector size
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* the inode chunk (allocation, optional init)
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* the inobt (record insertion)
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* the finobt (optional, record insertion)
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*/
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STATIC uint
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xfs_calc_icreate_resv_alloc(
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struct xfs_mount *mp)
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{
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return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) +
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mp->m_sb.sb_sectsize +
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xfs_calc_inode_chunk_res(mp, _ALLOC) +
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xfs_calc_inobt_res(mp) +
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xfs_calc_finobt_res(mp);
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}
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STATIC uint
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xfs_calc_icreate_reservation(xfs_mount_t *mp)
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{
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return XFS_DQUOT_LOGRES(mp) +
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max(xfs_calc_icreate_resv_alloc(mp),
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xfs_calc_create_resv_modify(mp));
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}
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STATIC uint
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xfs_calc_create_tmpfile_reservation(
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struct xfs_mount *mp)
|
|
{
|
|
uint res = XFS_DQUOT_LOGRES(mp);
|
|
|
|
res += xfs_calc_icreate_resv_alloc(mp);
|
|
return res + xfs_calc_iunlink_add_reservation(mp);
|
|
}
|
|
|
|
/*
|
|
* Making a new directory is the same as creating a new file.
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_mkdir_reservation(
|
|
struct xfs_mount *mp)
|
|
{
|
|
return xfs_calc_icreate_reservation(mp);
|
|
}
|
|
|
|
|
|
/*
|
|
* Making a new symplink is the same as creating a new file, but
|
|
* with the added blocks for remote symlink data which can be up to 1kB in
|
|
* length (XFS_SYMLINK_MAXLEN).
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_symlink_reservation(
|
|
struct xfs_mount *mp)
|
|
{
|
|
return xfs_calc_icreate_reservation(mp) +
|
|
xfs_calc_buf_res(1, XFS_SYMLINK_MAXLEN);
|
|
}
|
|
|
|
/*
|
|
* In freeing an inode we can modify:
|
|
* the inode being freed: inode size
|
|
* the super block free inode counter, AGF and AGFL: sector size
|
|
* the on disk inode (agi unlinked list removal)
|
|
* the inode chunk (invalidated, headers only)
|
|
* the inode btree
|
|
* the finobt (record insertion, removal or modification)
|
|
*
|
|
* Note that the inode chunk res. includes an allocfree res. for freeing of the
|
|
* inode chunk. This is technically extraneous because the inode chunk free is
|
|
* deferred (it occurs after a transaction roll). Include the extra reservation
|
|
* anyways since we've had reports of ifree transaction overruns due to too many
|
|
* agfl fixups during inode chunk frees.
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_ifree_reservation(
|
|
struct xfs_mount *mp)
|
|
{
|
|
return XFS_DQUOT_LOGRES(mp) +
|
|
xfs_calc_inode_res(mp, 1) +
|
|
xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) +
|
|
xfs_calc_iunlink_remove_reservation(mp) +
|
|
xfs_calc_inode_chunk_res(mp, _FREE) +
|
|
xfs_calc_inobt_res(mp) +
|
|
xfs_calc_finobt_res(mp);
|
|
}
|
|
|
|
/*
|
|
* When only changing the inode we log the inode and possibly the superblock
|
|
* We also add a bit of slop for the transaction stuff.
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_ichange_reservation(
|
|
struct xfs_mount *mp)
|
|
{
|
|
return XFS_DQUOT_LOGRES(mp) +
|
|
xfs_calc_inode_res(mp, 1) +
|
|
xfs_calc_buf_res(1, mp->m_sb.sb_sectsize);
|
|
|
|
}
|
|
|
|
/*
|
|
* Growing the data section of the filesystem.
|
|
* superblock
|
|
* agi and agf
|
|
* allocation btrees
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_growdata_reservation(
|
|
struct xfs_mount *mp)
|
|
{
|
|
return xfs_calc_buf_res(3, mp->m_sb.sb_sectsize) +
|
|
xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1),
|
|
XFS_FSB_TO_B(mp, 1));
|
|
}
|
|
|
|
/*
|
|
* Growing the rt section of the filesystem.
|
|
* In the first set of transactions (ALLOC) we allocate space to the
|
|
* bitmap or summary files.
|
|
* superblock: sector size
|
|
* agf of the ag from which the extent is allocated: sector size
|
|
* bmap btree for bitmap/summary inode: max depth * blocksize
|
|
* bitmap/summary inode: inode size
|
|
* allocation btrees for 1 block alloc: 2 * (2 * maxdepth - 1) * blocksize
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_growrtalloc_reservation(
|
|
struct xfs_mount *mp)
|
|
{
|
|
return xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) +
|
|
xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK),
|
|
XFS_FSB_TO_B(mp, 1)) +
|
|
xfs_calc_inode_res(mp, 1) +
|
|
xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1),
|
|
XFS_FSB_TO_B(mp, 1));
|
|
}
|
|
|
|
/*
|
|
* Growing the rt section of the filesystem.
|
|
* In the second set of transactions (ZERO) we zero the new metadata blocks.
|
|
* one bitmap/summary block: blocksize
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_growrtzero_reservation(
|
|
struct xfs_mount *mp)
|
|
{
|
|
return xfs_calc_buf_res(1, mp->m_sb.sb_blocksize);
|
|
}
|
|
|
|
/*
|
|
* Growing the rt section of the filesystem.
|
|
* In the third set of transactions (FREE) we update metadata without
|
|
* allocating any new blocks.
|
|
* superblock: sector size
|
|
* bitmap inode: inode size
|
|
* summary inode: inode size
|
|
* one bitmap block: blocksize
|
|
* summary blocks: new summary size
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_growrtfree_reservation(
|
|
struct xfs_mount *mp)
|
|
{
|
|
return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) +
|
|
xfs_calc_inode_res(mp, 2) +
|
|
xfs_calc_buf_res(1, mp->m_sb.sb_blocksize) +
|
|
xfs_calc_buf_res(1, mp->m_rsumsize);
|
|
}
|
|
|
|
/*
|
|
* Logging the inode modification timestamp on a synchronous write.
|
|
* inode
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_swrite_reservation(
|
|
struct xfs_mount *mp)
|
|
{
|
|
return xfs_calc_inode_res(mp, 1);
|
|
}
|
|
|
|
/*
|
|
* Logging the inode mode bits when writing a setuid/setgid file
|
|
* inode
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_writeid_reservation(
|
|
struct xfs_mount *mp)
|
|
{
|
|
return xfs_calc_inode_res(mp, 1);
|
|
}
|
|
|
|
/*
|
|
* Converting the inode from non-attributed to attributed.
|
|
* the inode being converted: inode size
|
|
* agf block and superblock (for block allocation)
|
|
* the new block (directory sized)
|
|
* bmap blocks for the new directory block
|
|
* allocation btrees
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_addafork_reservation(
|
|
struct xfs_mount *mp)
|
|
{
|
|
return XFS_DQUOT_LOGRES(mp) +
|
|
xfs_calc_inode_res(mp, 1) +
|
|
xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) +
|
|
xfs_calc_buf_res(1, mp->m_dir_geo->blksize) +
|
|
xfs_calc_buf_res(XFS_DAENTER_BMAP1B(mp, XFS_DATA_FORK) + 1,
|
|
XFS_FSB_TO_B(mp, 1)) +
|
|
xfs_calc_buf_res(xfs_allocfree_log_count(mp, 1),
|
|
XFS_FSB_TO_B(mp, 1));
|
|
}
|
|
|
|
/*
|
|
* Removing the attribute fork of a file
|
|
* the inode being truncated: inode size
|
|
* the inode's bmap btree: max depth * block size
|
|
* And the bmap_finish transaction can free the blocks and bmap blocks:
|
|
* the agf for each of the ags: 4 * sector size
|
|
* the agfl for each of the ags: 4 * sector size
|
|
* the super block to reflect the freed blocks: sector size
|
|
* worst case split in allocation btrees per extent assuming 4 extents:
|
|
* 4 exts * 2 trees * (2 * max depth - 1) * block size
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_attrinval_reservation(
|
|
struct xfs_mount *mp)
|
|
{
|
|
return max((xfs_calc_inode_res(mp, 1) +
|
|
xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK),
|
|
XFS_FSB_TO_B(mp, 1))),
|
|
(xfs_calc_buf_res(9, mp->m_sb.sb_sectsize) +
|
|
xfs_calc_buf_res(xfs_allocfree_log_count(mp, 4),
|
|
XFS_FSB_TO_B(mp, 1))));
|
|
}
|
|
|
|
/*
|
|
* Setting an attribute at mount time.
|
|
* the inode getting the attribute
|
|
* the superblock for allocations
|
|
* the agfs extents are allocated from
|
|
* the attribute btree * max depth
|
|
* the inode allocation btree
|
|
* Since attribute transaction space is dependent on the size of the attribute,
|
|
* the calculation is done partially at mount time and partially at runtime(see
|
|
* below).
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_attrsetm_reservation(
|
|
struct xfs_mount *mp)
|
|
{
|
|
return XFS_DQUOT_LOGRES(mp) +
|
|
xfs_calc_inode_res(mp, 1) +
|
|
xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) +
|
|
xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH, XFS_FSB_TO_B(mp, 1));
|
|
}
|
|
|
|
/*
|
|
* Setting an attribute at runtime, transaction space unit per block.
|
|
* the superblock for allocations: sector size
|
|
* the inode bmap btree could join or split: max depth * block size
|
|
* Since the runtime attribute transaction space is dependent on the total
|
|
* blocks needed for the 1st bmap, here we calculate out the space unit for
|
|
* one block so that the caller could figure out the total space according
|
|
* to the attibute extent length in blocks by:
|
|
* ext * M_RES(mp)->tr_attrsetrt.tr_logres
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_attrsetrt_reservation(
|
|
struct xfs_mount *mp)
|
|
{
|
|
return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize) +
|
|
xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK),
|
|
XFS_FSB_TO_B(mp, 1));
|
|
}
|
|
|
|
/*
|
|
* Removing an attribute.
|
|
* the inode: inode size
|
|
* the attribute btree could join: max depth * block size
|
|
* the inode bmap btree could join or split: max depth * block size
|
|
* And the bmap_finish transaction can free the attr blocks freed giving:
|
|
* the agf for the ag in which the blocks live: 2 * sector size
|
|
* the agfl for the ag in which the blocks live: 2 * sector size
|
|
* the superblock for the free block count: sector size
|
|
* the allocation btrees: 2 exts * 2 trees * (2 * max depth - 1) * block size
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_attrrm_reservation(
|
|
struct xfs_mount *mp)
|
|
{
|
|
return XFS_DQUOT_LOGRES(mp) +
|
|
max((xfs_calc_inode_res(mp, 1) +
|
|
xfs_calc_buf_res(XFS_DA_NODE_MAXDEPTH,
|
|
XFS_FSB_TO_B(mp, 1)) +
|
|
(uint)XFS_FSB_TO_B(mp,
|
|
XFS_BM_MAXLEVELS(mp, XFS_ATTR_FORK)) +
|
|
xfs_calc_buf_res(XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK), 0)),
|
|
(xfs_calc_buf_res(5, mp->m_sb.sb_sectsize) +
|
|
xfs_calc_buf_res(xfs_allocfree_log_count(mp, 2),
|
|
XFS_FSB_TO_B(mp, 1))));
|
|
}
|
|
|
|
/*
|
|
* Clearing a bad agino number in an agi hash bucket.
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_clear_agi_bucket_reservation(
|
|
struct xfs_mount *mp)
|
|
{
|
|
return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize);
|
|
}
|
|
|
|
/*
|
|
* Adjusting quota limits.
|
|
* the xfs_disk_dquot_t: sizeof(struct xfs_disk_dquot)
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_qm_setqlim_reservation(void)
|
|
{
|
|
return xfs_calc_buf_res(1, sizeof(struct xfs_disk_dquot));
|
|
}
|
|
|
|
/*
|
|
* Allocating quota on disk if needed.
|
|
* the write transaction log space for quota file extent allocation
|
|
* the unit of quota allocation: one system block size
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_qm_dqalloc_reservation(
|
|
struct xfs_mount *mp)
|
|
{
|
|
return xfs_calc_write_reservation(mp) +
|
|
xfs_calc_buf_res(1,
|
|
XFS_FSB_TO_B(mp, XFS_DQUOT_CLUSTER_SIZE_FSB) - 1);
|
|
}
|
|
|
|
/*
|
|
* Turning off quotas.
|
|
* the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2
|
|
* the superblock for the quota flags: sector size
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_qm_quotaoff_reservation(
|
|
struct xfs_mount *mp)
|
|
{
|
|
return sizeof(struct xfs_qoff_logitem) * 2 +
|
|
xfs_calc_buf_res(1, mp->m_sb.sb_sectsize);
|
|
}
|
|
|
|
/*
|
|
* End of turning off quotas.
|
|
* the xfs_qoff_logitem_t: sizeof(struct xfs_qoff_logitem) * 2
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_qm_quotaoff_end_reservation(void)
|
|
{
|
|
return sizeof(struct xfs_qoff_logitem) * 2;
|
|
}
|
|
|
|
/*
|
|
* Syncing the incore super block changes to disk.
|
|
* the super block to reflect the changes: sector size
|
|
*/
|
|
STATIC uint
|
|
xfs_calc_sb_reservation(
|
|
struct xfs_mount *mp)
|
|
{
|
|
return xfs_calc_buf_res(1, mp->m_sb.sb_sectsize);
|
|
}
|
|
|
|
void
|
|
xfs_trans_resv_calc(
|
|
struct xfs_mount *mp,
|
|
struct xfs_trans_resv *resp)
|
|
{
|
|
/*
|
|
* The following transactions are logged in physical format and
|
|
* require a permanent reservation on space.
|
|
*/
|
|
resp->tr_write.tr_logres = xfs_calc_write_reservation(mp);
|
|
if (xfs_sb_version_hasreflink(&mp->m_sb))
|
|
resp->tr_write.tr_logcount = XFS_WRITE_LOG_COUNT_REFLINK;
|
|
else
|
|
resp->tr_write.tr_logcount = XFS_WRITE_LOG_COUNT;
|
|
resp->tr_write.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
|
|
|
|
resp->tr_itruncate.tr_logres = xfs_calc_itruncate_reservation(mp);
|
|
if (xfs_sb_version_hasreflink(&mp->m_sb))
|
|
resp->tr_itruncate.tr_logcount =
|
|
XFS_ITRUNCATE_LOG_COUNT_REFLINK;
|
|
else
|
|
resp->tr_itruncate.tr_logcount = XFS_ITRUNCATE_LOG_COUNT;
|
|
resp->tr_itruncate.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
|
|
|
|
resp->tr_rename.tr_logres = xfs_calc_rename_reservation(mp);
|
|
resp->tr_rename.tr_logcount = XFS_RENAME_LOG_COUNT;
|
|
resp->tr_rename.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
|
|
|
|
resp->tr_link.tr_logres = xfs_calc_link_reservation(mp);
|
|
resp->tr_link.tr_logcount = XFS_LINK_LOG_COUNT;
|
|
resp->tr_link.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
|
|
|
|
resp->tr_remove.tr_logres = xfs_calc_remove_reservation(mp);
|
|
resp->tr_remove.tr_logcount = XFS_REMOVE_LOG_COUNT;
|
|
resp->tr_remove.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
|
|
|
|
resp->tr_symlink.tr_logres = xfs_calc_symlink_reservation(mp);
|
|
resp->tr_symlink.tr_logcount = XFS_SYMLINK_LOG_COUNT;
|
|
resp->tr_symlink.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
|
|
|
|
resp->tr_create.tr_logres = xfs_calc_icreate_reservation(mp);
|
|
resp->tr_create.tr_logcount = XFS_CREATE_LOG_COUNT;
|
|
resp->tr_create.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
|
|
|
|
resp->tr_create_tmpfile.tr_logres =
|
|
xfs_calc_create_tmpfile_reservation(mp);
|
|
resp->tr_create_tmpfile.tr_logcount = XFS_CREATE_TMPFILE_LOG_COUNT;
|
|
resp->tr_create_tmpfile.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
|
|
|
|
resp->tr_mkdir.tr_logres = xfs_calc_mkdir_reservation(mp);
|
|
resp->tr_mkdir.tr_logcount = XFS_MKDIR_LOG_COUNT;
|
|
resp->tr_mkdir.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
|
|
|
|
resp->tr_ifree.tr_logres = xfs_calc_ifree_reservation(mp);
|
|
resp->tr_ifree.tr_logcount = XFS_INACTIVE_LOG_COUNT;
|
|
resp->tr_ifree.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
|
|
|
|
resp->tr_addafork.tr_logres = xfs_calc_addafork_reservation(mp);
|
|
resp->tr_addafork.tr_logcount = XFS_ADDAFORK_LOG_COUNT;
|
|
resp->tr_addafork.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
|
|
|
|
resp->tr_attrinval.tr_logres = xfs_calc_attrinval_reservation(mp);
|
|
resp->tr_attrinval.tr_logcount = XFS_ATTRINVAL_LOG_COUNT;
|
|
resp->tr_attrinval.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
|
|
|
|
resp->tr_attrsetm.tr_logres = xfs_calc_attrsetm_reservation(mp);
|
|
resp->tr_attrsetm.tr_logcount = XFS_ATTRSET_LOG_COUNT;
|
|
resp->tr_attrsetm.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
|
|
|
|
resp->tr_attrrm.tr_logres = xfs_calc_attrrm_reservation(mp);
|
|
resp->tr_attrrm.tr_logcount = XFS_ATTRRM_LOG_COUNT;
|
|
resp->tr_attrrm.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
|
|
|
|
resp->tr_growrtalloc.tr_logres = xfs_calc_growrtalloc_reservation(mp);
|
|
resp->tr_growrtalloc.tr_logcount = XFS_DEFAULT_PERM_LOG_COUNT;
|
|
resp->tr_growrtalloc.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
|
|
|
|
resp->tr_qm_dqalloc.tr_logres = xfs_calc_qm_dqalloc_reservation(mp);
|
|
if (xfs_sb_version_hasreflink(&mp->m_sb))
|
|
resp->tr_qm_dqalloc.tr_logcount = XFS_WRITE_LOG_COUNT_REFLINK;
|
|
else
|
|
resp->tr_qm_dqalloc.tr_logcount = XFS_WRITE_LOG_COUNT;
|
|
resp->tr_qm_dqalloc.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
|
|
|
|
/*
|
|
* The following transactions are logged in logical format with
|
|
* a default log count.
|
|
*/
|
|
resp->tr_qm_setqlim.tr_logres = xfs_calc_qm_setqlim_reservation();
|
|
resp->tr_qm_setqlim.tr_logcount = XFS_DEFAULT_LOG_COUNT;
|
|
|
|
resp->tr_qm_quotaoff.tr_logres = xfs_calc_qm_quotaoff_reservation(mp);
|
|
resp->tr_qm_quotaoff.tr_logcount = XFS_DEFAULT_LOG_COUNT;
|
|
|
|
resp->tr_qm_equotaoff.tr_logres =
|
|
xfs_calc_qm_quotaoff_end_reservation();
|
|
resp->tr_qm_equotaoff.tr_logcount = XFS_DEFAULT_LOG_COUNT;
|
|
|
|
resp->tr_sb.tr_logres = xfs_calc_sb_reservation(mp);
|
|
resp->tr_sb.tr_logcount = XFS_DEFAULT_LOG_COUNT;
|
|
|
|
/* growdata requires permanent res; it can free space to the last AG */
|
|
resp->tr_growdata.tr_logres = xfs_calc_growdata_reservation(mp);
|
|
resp->tr_growdata.tr_logcount = XFS_DEFAULT_PERM_LOG_COUNT;
|
|
resp->tr_growdata.tr_logflags |= XFS_TRANS_PERM_LOG_RES;
|
|
|
|
/* The following transaction are logged in logical format */
|
|
resp->tr_ichange.tr_logres = xfs_calc_ichange_reservation(mp);
|
|
resp->tr_fsyncts.tr_logres = xfs_calc_swrite_reservation(mp);
|
|
resp->tr_writeid.tr_logres = xfs_calc_writeid_reservation(mp);
|
|
resp->tr_attrsetrt.tr_logres = xfs_calc_attrsetrt_reservation(mp);
|
|
resp->tr_clearagi.tr_logres = xfs_calc_clear_agi_bucket_reservation(mp);
|
|
resp->tr_growrtzero.tr_logres = xfs_calc_growrtzero_reservation(mp);
|
|
resp->tr_growrtfree.tr_logres = xfs_calc_growrtfree_reservation(mp);
|
|
}
|