Re: [PATCH v2 RESEND 5/5] fstests: btrfs: Test inband dedup with balance.
From: Dave Chinner <david@fromorbit.com>
Date: 2016-02-28 22:42:43
Also in:
fstests
On Wed, Feb 24, 2016 at 04:06:36PM +0800, Qu Wenruo wrote:
Btrfs balance will reloate date extent, but its hash is removed too late at run_delayed_ref() time, which will cause extent ref increased increased during balance, cause either find_data_references() gives WARN_ON() or even run_delayed_refs() fails and cause transaction abort. Add such concurrency test for inband dedup and balance. Signed-off-by: Qu Wenruo <redacted> ---
...
+for n in $(seq 1 $nr); do
+ $XFS_IO_PROG -f -c "pwrite -b $dedup_bs 0 $dedup_bs" \
+ ${file}_${n} > /dev/null 2>&1
+done_populate_fs(), please.
+ +kill $balance_pid &> /dev/null +wait + +# Sometimes even we killed $balance_pid and wait returned, +# balance may still be running, use balance cancel to wait it. +_run_btrfs_util_prog balance cancel $SCRATCH_MNT &> /dev/null
This needs to be in the cleanup function. Cheers, Dave. -- Dave Chinner david@fromorbit.com