On Sun, Aug 13, 2023 at 6:35 PM Darrick J. Wong <djwong@xxxxxxxxxx> wrote: > > On Sat, Aug 12, 2023 at 06:15:00PM +0300, Amir Goldstein wrote: > > Not sure how those tests pass in regression tests. > > Probably truncate silently fails and is not critical to the test. > > > > in kdevops I get errors like: > > /data/fstests-install/xfstests/tests/generic/298: line 45: /dev/loop12): > > syntax error: operand expected (error token is "/dev/loop12)") > > > > Signed-off-by: Amir Goldstein <amir73il@xxxxxxxxx> > > --- > > tests/generic/175 | 2 +- > > tests/generic/297 | 2 +- > > tests/generic/298 | 2 +- > > 3 files changed, 3 insertions(+), 3 deletions(-) > > > > diff --git a/tests/generic/175 b/tests/generic/175 > > index 07af2199..14825a39 100755 > > --- a/tests/generic/175 > > +++ b/tests/generic/175 > > @@ -33,7 +33,7 @@ _pwrite_byte 0x61 0 $blksz "$testdir/file1" >> "$seqres.full" > > > > fnr=19 > > echo "Create extents" > > -truncate -s $(( (2 ** i) * blksz)) "$testdir/file1" > > +truncate -s $(( (2 ** (fnr + 1)) * blksz)) "$testdir/file1" > > for i in $(seq 0 $fnr); do > > Hmm. Frankly I don't remember why I put those truncate calls in there. You specifically added truncate in commit ddf6ff2f reflink: ensure that we can handle reflinking a lot of extents and then it was copied to the two new tests. maybe this will give you a hint? > Does the test still work if you remove them entirely? AFAICT the test > writes a single block's worth of data to the file, then truncates the > file size to one block. Which I think is pointless. > > > echo " ++ Reflink size $i, $((2 ** i)) blocks" >> "$seqres.full" > > n=$(( (2 ** i) * blksz)) > > diff --git a/tests/generic/297 b/tests/generic/297 > > index 6bdc3e1c..1fc48671 100755 > > --- a/tests/generic/297 > > +++ b/tests/generic/297 > > @@ -42,7 +42,7 @@ _pwrite_byte 0x61 0 $blksz $testdir/file1 >> $seqres.full > > fnr=26 # 2^26 reflink extents should be enough to find a slow op? > > timeout=8 # guarantee a good long run... > > echo "Find a reflink size that takes a long time" > > -truncate -s $(( (2 ** i) * blksz)) $testdir/file1 > > +truncate -s $(( (2 ** (fnr + 1)) * blksz)) $testdir/file1 > > for i in $(seq 0 $fnr); do > > echo " ++ Reflink size $i, $((2 ** i)) blocks" >> $seqres.full > > n=$(( (2 ** i) * blksz)) > > The loop control logic could be converted to: > > echo "Find a reflink size that takes a long time" > deadline="$(( $(date +%s) + timeout ))" > for ((i = 0, now = $(date +%s); i < fnr && now < deadline; i++, now = $(date +%s))); do > echo " ++ Reflink size $i, $((2 ** i)) blocks" >> $seqres.full > n=$(( (2 ** i) * blksz)) > $XFS_IO_PROG -f -c "reflink $testdir/file1 0 $n $n" $testdir/file1 >> $seqres.full 2>&1 > done > > (also in 298) > Whatever works is fine by me. Feel free to keep my commit message or drop it. Thanks, Amir.
