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[PATCH] md: Don't clear bits in bitmap when writing to one device fails during recovery
Currently a device failure during recovery leaves bits set in the bitmap. This normally isn't a problem as the offending device will be rejected because of errors. However if device re-adding is being used with non-persistent bitmaps, this can be a problem. Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -1135,8 +1135,19 @@ static int end_sync_write(struct bio *bio, unsigned int bytes_done, int error)
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mirror = i;
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break;
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}
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if (!uptodate)
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if (!uptodate) {
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int sync_blocks = 0;
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sector_t s = r1_bio->sector;
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long sectors_to_go = r1_bio->sectors;
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/* make sure these bits doesn't get cleared. */
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do {
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bitmap_end_sync(mddev->bitmap, r1_bio->sector,
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&sync_blocks, 1);
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s += sync_blocks;
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sectors_to_go -= sync_blocks;
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} while (sectors_to_go > 0);
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md_error(mddev, conf->mirrors[mirror].rdev);
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}
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update_head_pos(mirror, r1_bio);
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