On Tue, Nov 20, 2018 at 09:04:22AM +1100, Dave Chinner wrote: > On Mon, Nov 19, 2018 at 02:05:13PM -0500, Brian Foster wrote: > > On Mon, Nov 19, 2018 at 11:26:11AM +1100, Dave Chinner wrote: > > > (*) I've still got several different fsx variants that fail on either > > > default configs and/or 1k block size with different signatures. > > > Problem is they take between 370,000 ops and 5 million ops to > > > trigger, and so generate tens to hundreds of GB of trace data.... > > > > > > > Have you tried 1.) further reducing the likely unrelated operations > > (i.e., fallocs, insert/collapse range, etc.) from the test > > Yes. The test cases I have cut out all the unnecessary ops. > > Oh, look, I just found a new failure on a default 4k block size > filesystem: > > # src/xfstests-dev/ltp/fsx -q -p 10000 -o 128000 -l 500000 -r 4096 -t 512 -w 512 -Z -R -W -F -H -z -C -I /mnt/scratch/foo > 20000 clone from 0x46000 to 0x48000, (0x2000 bytes) at 0x2c000 > 100000 clone from 0x44000 to 0x51000, (0xd000 bytes) at 0x1e000 > 110000 clone from 0x54000 to 0x5b000, (0x7000 bytes) at 0xf000 > READ BAD DATA: offset = 0x1000, size = 0xb000, fname = /mnt/scratch/foo > OFFSET GOOD BAD RANGE > 0x07000 0xa2d9 0x711b 0x00000 > .... And just to reinforce that these are unreliable failures, the second time I ran the above command: $ src/xfstests-dev/ltp/fsx -q -p 10000 -o 128000 -l 500000 -r 4096 -t 512 -w 512 -Z -R -W -F -H -z -C -I /mnt/scratch/foo 20000 clone from 0x46000 to 0x48000, (0x2000 bytes) at 0x2c000 100000 clone from 0x44000 to 0x51000, (0xd000 bytes) at 0x1e000 110000 clone from 0x54000 to 0x5b000, (0x7000 bytes) at 0xf000 120000 clone from 0x3a000 to 0x3e000, (0x4000 bytes) at 0x10000 140000 trunc from 0x62400 to 0xd800 190000 trunc from 0x56800 to 0x78e00 READ BAD DATA: offset = 0x2c000, size = 0x1c000, fname = /mnt/scratch/foo OFFSET GOOD BAD RANGE 0x32000 0xc81d 0x9289 0x00000 ..... It failed somewhere else. That's the difficulty I'm having here - the failures aren't reliable. Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx
