On Tue, Feb 14, 2023 at 04:00:07PM +0800, Zorro Lang wrote:
> On Fri, Dec 30, 2022 at 02:19:09PM -0800, Darrick J. Wong wrote:
> > From: Darrick J. Wong <djwong@xxxxxxxxxx>
> >
> > For stress testing online repair, try to use the FORCE_REBUILD ioctl
> > flag over the error injection knobs whenever possible because the knobs
> > are very noisy and are not always available.
> >
> > Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
> > ---
> > common/fuzzy | 34 +++++++++++++++++++++++++++++++---
> > 1 file changed, 31 insertions(+), 3 deletions(-)
> >
> >
> > diff --git a/common/fuzzy b/common/fuzzy
> > index f7f660bc31..14f7fdf03c 100644
> > --- a/common/fuzzy
> > +++ b/common/fuzzy
> > @@ -398,6 +398,9 @@ __stress_one_scrub_loop() {
> >
> > local xfs_io_args=()
> > for arg in "$@"; do
> > + if [ -n "$SCRUBSTRESS_USE_FORCE_REBUILD" ]; then
> > + arg="$(echo "$arg" | sed -e 's/^repair/repair -R/g')"
> > + fi
> > if echo "$arg" | grep -q -w '%agno%'; then
> > # Substitute the AG number
> > for ((agno = 0; agno < agcount; agno++)); do
> > @@ -695,13 +698,21 @@ _require_xfs_stress_scrub() {
> > _notrun 'xfs scrub stress test requires common/filter'
> > }
> >
> > +# Make sure that we can force repairs either by error injection or passing
> > +# FORCE_REBUILD via ioctl.
> > +__require_xfs_stress_force_rebuild() {
> > + local output="$($XFS_IO_PROG -x -c 'repair -R probe' $SCRATCH_MNT 2>&1)"
> > + test -z "$output" && return
> > + _require_xfs_io_error_injection "force_repair"
> > +}
> > +
> > # Make sure we have everything we need to run stress and online repair
> > _require_xfs_stress_online_repair() {
> > _require_xfs_stress_scrub
> > _require_xfs_io_command "repair"
> > command -v _require_xfs_io_error_injection &>/dev/null || \
> > _notrun 'xfs repair stress test requires common/inject'
> > - _require_xfs_io_error_injection "force_repair"
> > + __require_xfs_stress_force_rebuild
> > _require_freeze
> > }
> >
> > @@ -783,7 +794,11 @@ __stress_scrub_check_commands() {
> > esac
> >
> > for arg in "$@"; do
> > - local cooked_arg="$(echo "$arg" | sed -e "s/%agno%/0/g")"
> > + local cooked_arg="$arg"
> > + if [ -n "$SCRUBSTRESS_USE_FORCE_REBUILD" ]; then
> > + cooked_arg="$(echo "$cooked_arg" | sed -e 's/^repair/repair -R/g')"
> > + fi
> > + cooked_arg="$(echo "$cooked_arg" | sed -e "s/%agno%/0/g")"
> > testio=`$XFS_IO_PROG -x -c "$cooked_arg" "$cooked_tgt" 2>&1`
> > echo $testio | grep -q "Unknown type" && \
> > _notrun "xfs_io scrub subcommand support is missing"
> > @@ -943,10 +958,23 @@ _scratch_xfs_stress_scrub() {
> > echo "Loop finished at $(date)" >> $seqres.full
> > }
> >
> > +# Decide if we're going to force repairs either by error injection or passing
> > +# FORCE_REBUILD via ioctl.
> > +__scratch_xfs_stress_setup_force_rebuild() {
> > + local output="$($XFS_IO_PROG -x -c 'repair -R probe' $SCRATCH_MNT 2>&1)"
> > +
> > + if [ -z "$output" ]; then
> > + export SCRUBSTRESS_USE_FORCE_REBUILD=1
>
> Do you need to use this parameter ^^ in another child process? Is the "export"
> necessary?
Nope, it's not required.
--D
> Thanks,
> Zorro
>
> > + return
> > + fi
> > +
> > + $XFS_IO_PROG -x -c 'inject force_repair' $SCRATCH_MNT
> > +}
> > +
> > # Start online repair, freeze, and fsstress in background looping processes,
> > # and wait for 30*TIME_FACTOR seconds to see if the filesystem goes down.
> > # Same requirements and arguments as _scratch_xfs_stress_scrub.
> > _scratch_xfs_stress_online_repair() {
> > - $XFS_IO_PROG -x -c 'inject force_repair' $SCRATCH_MNT
> > + __scratch_xfs_stress_setup_force_rebuild
> > XFS_SCRUB_FORCE_REPAIR=1 _scratch_xfs_stress_scrub "$@"
> > }
> >
>
