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btrfs-progs: scrub status: only report limits if at least one exists 

On multi-device filesystems, scrub status should report "some limits
set" if at least one device has a scrub limit set.

However, with btrfs-progs 6.6.3, this was being reported regardless of
whether any limit actually being set:

    # sudo btrfs scrub limit /more/butter
    UUID: 989129d9-c96f-4d52-9d68-cbb6d9b2c499
    Id  Limit       Path
    --  -----  ---------
     1      -  /dev/sdc1
     2      -  /dev/sdd1

    # sudo btrfs scrub status /more/butter/
    UUID:             989129d9-c96f-4d52-9d68-cbb6d9b2c499
    Scrub started:    Mon Jan 15 02:00:30 2024
    Status:           running
    Duration:         6:23:19
    Time left:        0:49:08
    ETA:              Mon Jan 15 09:12:57 2024
    Total to scrub:   9.83TiB
    Bytes scrubbed:   8.72TiB  (88.64%)
    Rate:             397.47MiB/s (some device limits set)
    Error summary:    no errors found

Fix it by only setting `limit` to the special marker value 1 if at least
one actual limit is found.

Pull-request: #733
Issue: #727
Fixes: 7e4a235df1 ("btrfs-progs: scrub status: print device speed limit in status if set")
Signed-off-by: Jonas Malaco <jonas@protocubo.io>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Jonas Malaco 2024-01-15 08:17:38 -03:00 committed by David Sterba
parent 631ee66639
commit 8bca55d1e7
1 changed files with 1 additions and 1 deletions
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2
cmds/scrub.c
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@ -387,7 +387,7 @@ static void print_fs_stat(struct scrub_fs_stat *fs_stat, int raw, u64 bytes_tota
* Limit for the whole filesystem stats does not make sense,
* but if there's any device with a limit then print it.
*/
if (nr_devices != 1)
if (nr_devices != 1 && limit)
limit = 1;
print_scrub_summary(&fs_stat->p, &fs_stat->s, bytes_total, limit);
}