On Wed, May 15, 2019 at 04:02:21PM +0100, fdmanana@xxxxxxxxxx wrote: > From: Filipe Manana <fdmanana@xxxxxxxx> > > Run fsstress, fsync every file and directory, simulate a power failure and > then verify the all files and directories exist, with the same data and > metadata they had before the power failure. > > This tes has found already 2 bugs in btrfs, that caused mtime and ctime of > directories not being preserved after replaying the log/journal and loss > of a directory's attributes (such a UID and GID) after replaying the log. > The patches that fix the btrfs issues are titled: > > "Btrfs: fix wrong ctime and mtime of a directory after log replay" > "Btrfs: fix fsync not persisting changed attributes of a directory" > > Running this test 1000 times: > > - on ext4 it has resulted in about a dozen journal checksum errors (on a > 5.0 kernel) that resulted in failure to mount the filesystem after the > simulated power failure with dmflakey, which produces the following > error in dmesg/syslog: > > [Mon May 13 12:51:37 2019] JBD2: journal checksum error > [Mon May 13 12:51:37 2019] EXT4-fs (dm-0): error loading journal I'm curious what configuration you used when you ran the test. I tried to reproduce it, and had no luck: TESTRUNID: tytso-20190516042341 KERNEL: kernel 5.1.0-rc3-xfstests-00034-g0c72924ef346 #999 SMP Wed May 15 00:56:08 EDT 2019 x86_64 CMDLINE: -c 4k -C 1000 generic/547 CPUS: 2 MEM: 7680 ext4/4k: 1000 tests, 1855 seconds Totals: 1000 tests, 0 skipped, 0 failures, 0 errors, 1855s FSTESTPRJ: gce-xfstests FSTESTVER: blktests baccddc (Wed, 13 Mar 2019 00:06:50 -0700) FSTESTVER: fio fio-3.2 (Fri, 3 Nov 2017 15:23:49 -0600) FSTESTVER: fsverity bdebc45 (Wed, 5 Sep 2018 21:32:22 -0700) FSTESTVER: ima-evm-utils 0267fa1 (Mon, 3 Dec 2018 06:11:35 -0500) FSTESTVER: nvme-cli v1.7-35-g669d759 (Tue, 12 Mar 2019 11:22:16 -0600) FSTESTVER: quota 62661bd (Tue, 2 Apr 2019 17:04:37 +0200) FSTESTVER: stress-ng 7d0353cf (Sun, 20 Jan 2019 03:30:03 +0000) FSTESTVER: syzkaller bab43553 (Fri, 15 Mar 2019 09:08:49 +0100) FSTESTVER: xfsprogs v5.0.0 (Fri, 3 May 2019 12:14:36 -0500) FSTESTVER: xfstests-bld 9582562 (Sun, 12 May 2019 00:38:51 -0400) FSTESTVER: xfstests linux-v3.8-2390-g64233614 (Thu, 16 May 2019 00:12:52 -0400) FSTESTCFG: 4k FSTESTSET: generic/547 FSTESTOPT: count 1000 aex GCE ID: 8592267165157073108
