Re: [PATCH 1/2] btrfs: test qgroup limit handling on fsverity rollback

[Daniel Linjama <daniel@dev.linjama.com>]

On 2026/9/15 15:20, Qu Wenruo wrote:
>> +_require_btrfs_command quota
>
> _require_btrfs_command quota rescan -w

Will do in v2.

>> +    _qgroup_rescan $SCRATCH_MNT >> $seqres.full 2>&1
>
> Use "-w" option, or the rescan may not finish in time before the workload.

_qgroup_rescan already runs "btrfs quota rescan -w", so the test waits
for the rescan. I'll keep the helper.

>> +    while dd if=/dev/zero of=$subv/filler.$i bs=1M count=4 status=none 2>/dev/null; do
> [...]
> You can just do a 40MiB write (which should fail halfway), sync, retry
> the write until the write failed to write any bytes.

Will do in v2, with xfs_io instead of dd as the other tests do. A single
write turned out to be enough: after it fails with -EDQUOT and a sync,
nothing more fits, so there is no retry loop.

Thanks,
Daniel