On Tue, Feb 18, 2020 at 11:44:24AM +0800, Yang Xu wrote: > > > on 2020/02/14 22:05, Theodore Y. Ts'o wrote: > > On Fri, Feb 14, 2020 at 09:14:33AM +0800, Yang Xu wrote: > > > > > > > > So were you able to reproduce this on a 5.6.0-rc1 kernel or not? > > > No. I don't reproduce it on 5.6.0-rc1 kernel, but 5.6.0-rc1 kernel hang on > > > my KVM machine when run generic/269. > > > > I'm not able to reproduce the 5.6.0-rc1 hang using kvm-xfstests[1]. > > Neither has any other ext4 developers, which is why it might be useful > > to see if there's something unique in your .config for 5.6.0-rc1. > > Could you send us the .config you were using? > > > Sorry for the late reply. > > my 5.6.0-rc1 config as attach. Unfortunately, I just tried using your config with kvm-xfstests, and it passed without problems. Did you say this was a reliable reproducer on your system? % kvm-xfstests -c 4k generic/269 KERNEL: kernel 5.6.0-rc2-xfstests #1492 SMP Mon Feb 17 23:22:40 EST 2020 x86_64 CPUS: 2 MEM: 1966.03 ext4/4k: 1 tests, 43 seconds generic/269 Pass 42s Totals: 1 tests, 0 skipped, 0 failures, 0 errors, 42s FSTESTVER: blktests 9e02419 (Thu, 19 Dec 2019 14:45:55 -0800) FSTESTVER: e2fsprogs v1.45.4-15-g4b4f7b35 (Wed, 9 Oct 2019 20:25:01 -0400) FSTESTVER: fio fio-3.17 (Mon, 16 Dec 2019 15:48:43 -0700) FSTESTVER: fsverity v1.0 (Wed, 6 Nov 2019 10:35:02 -0800) FSTESTVER: ima-evm-utils v1.2 (Fri, 26 Jul 2019 07:42:17 -0400) FSTESTVER: nvme-cli v1.9-159-g18119bc (Thu, 26 Dec 2019 11:04:01 -0700) FSTESTVER: quota 9a001cc (Tue, 5 Nov 2019 16:12:59 +0100) FSTESTVER: util-linux v2.35-19-g95afec771 (Fri, 24 Jan 2020 12:25:35 -0500) FSTESTVER: xfsprogs v5.4.0 (Fri, 20 Dec 2019 16:47:12 -0500) FSTESTVER: xfstests linux-v3.8-2652-g002e349c (Fri, 24 Jan 2020 00:49:40 -0500) FSTESTVER: xfstests-bld 6f10355 (Fri, 24 Jan 2020 12:36:30 -0500) FSTESTCFG: 4k FSTESTSET: generic/269 FSTESTOPT: aex This was run on a Debian testing system, with kvm version: QEMU emulator version 4.2.0 (Debian 1:4.2-3) What about hardware details of your system? How many CPU's, memory, etc.? And what sort of storage device are you using for kvm? (I'm using virtio-scsi backed by LVM volumes for the scratch and test partitions.) - Ted
