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Actually I once reported this hang symptom in last October, > > and Darrick and John kindly took some actions [1]. Since then, the hang > > disappeared and I have not observed the hang almost one year. However, my test > > system started reporting the hang again last week. > > > > [1] https://lore.kernel.org/linux-xfs/cmk52aqexackyz65phxgme55a3tdrermo3o4skr4lo4pwvvvcp@jmcblnfikbp2/#t > > This was the series to resolve, I think: > https://lore.kernel.org/fstests/176279908967.605950.2192923313361120314.stgit@frogsfrogsfrogs/T/#t > > As an experiment, can you reduce the file size further, like: > > --- a/tests/generic/774 > +++ b/tests/generic/774 > @@ -29,7 +29,7 @@ aw_bsize=$(_max "$awu_min_write" "$((awu_max_write/4))") > fsbsize=$(_get_block_size $SCRATCH_MNT) > > threads=$(_min "$(($(nproc) * 2 * LOAD_FACTOR))" "100") > -filesize=$((aw_bsize * threads * 10)) > +filesize=$((aw_bsize * threads)) > depth=$threads > aw_io_size=$((filesize / threads)) > aw_io_inc=$aw_io_size Thanks for the response. I repeated the test case 100 times with the change above, and I did not observe the hang. The change looks avoiding the hang. > > > > > FYI, here I attache the kernel message [2]. > > Is mainline baseline hanging, i.e. v7.3-rc2? I will try this out tomorrow.