From 7192833c4e55b26e8f15ef58577867a1bc808036 Mon Sep 17 00:00:00 2001 From: Naohiro Aota Date: Tue, 9 Apr 2024 23:18:52 +0900 Subject: btrfs: scrub: run relocation repair when/only needed When btrfs scrub finds an error, it reads mirrors to find correct data. If all the errors are fixed, sctx->error_bitmap is cleared for the stripe range. However, in the zoned mode, it runs relocation to repair scrub errors when the bitmap is *not* empty, which is a flipped condition. Also, it runs the relocation even if the scrub is read-only. This was missed by a fix in commit 1f2030ff6e49 ("btrfs: scrub: respect the read-only flag during repair"). The repair is only necessary when there is a repaired sector and should be done on read-write scrub. So, tweak the condition for both regular and zoned case. Fixes: 54765392a1b9 ("btrfs: scrub: introduce helper to queue a stripe for scrub") Fixes: 1f2030ff6e49 ("btrfs: scrub: respect the read-only flag during repair") CC: stable@vger.kernel.org # 6.6+ Reviewed-by: Qu Wenruo Reviewed-by: Johannes Thumshirn Signed-off-by: Naohiro Aota Signed-off-by: David Sterba --- fs/btrfs/scrub.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'fs') diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index fa25004ab04e..4b22cfe9a98c 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -1012,6 +1012,7 @@ static void scrub_stripe_read_repair_worker(struct work_struct *work) struct btrfs_fs_info *fs_info = sctx->fs_info; int num_copies = btrfs_num_copies(fs_info, stripe->bg->start, stripe->bg->length); + unsigned long repaired; int mirror; int i; @@ -1078,16 +1079,15 @@ out: * Submit the repaired sectors. For zoned case, we cannot do repair * in-place, but queue the bg to be relocated. */ - if (btrfs_is_zoned(fs_info)) { - if (!bitmap_empty(&stripe->error_bitmap, stripe->nr_sectors)) + bitmap_andnot(&repaired, &stripe->init_error_bitmap, &stripe->error_bitmap, + stripe->nr_sectors); + if (!sctx->readonly && !bitmap_empty(&repaired, stripe->nr_sectors)) { + if (btrfs_is_zoned(fs_info)) { btrfs_repair_one_zone(fs_info, sctx->stripes[0].bg->start); - } else if (!sctx->readonly) { - unsigned long repaired; - - bitmap_andnot(&repaired, &stripe->init_error_bitmap, - &stripe->error_bitmap, stripe->nr_sectors); - scrub_write_sectors(sctx, stripe, repaired, false); - wait_scrub_stripe_io(stripe); + } else { + scrub_write_sectors(sctx, stripe, repaired, false); + wait_scrub_stripe_io(stripe); + } } scrub_stripe_report_errors(sctx, stripe); -- cgit v1.2.3