[dm-devel] A crash caused by the commit 0dd84b319352bb8ba64752d4e45396d8b13e6018

[Xiao Ni]

On Fri, Nov 4, 2022 at 7:10 PM Zdenek Kabelac <zkabelac at redhat.com> wrote:
>
> Dne 04. 11. 22 v 2:23 Guoqing Jiang napsal(a):
> >
> >
> > On 11/3/22 10:46 PM, Heming Zhao wrote:
> >> On 11/3/22 11:47 AM, Guoqing Jiang wrote:
> >>> Hi,
> >>>
> >>> On 11/3/22 12:27 AM, Mikulas Patocka wrote:
> >>>> Hi
> >>>>
> >>>> There's a crash in the test shell/lvchange-rebuild-raid.sh when running
> >>>> the lvm testsuite. It can be reproduced by running "make check_local
> >>>> T=shell/lvchange-rebuild-raid.sh" in a loop.
> >>>
> >>> I have problem to run the cmd (not sure what I missed), it would be better if
> >>> the relevant cmds are extracted from the script then I can reproduce it with
> >>> those cmds directly.
> >>>
> >>> [root at localhost lvm2]# git log | head -1
> >>> commit 36a923926c2c27c1a8a5ac262387d2a4d3e620f8
> >>> [root at localhost lvm2]# make check_local T=shell/lvchange-rebuild-raid.sh
> >>> make -C libdm device-mapper
> >>> [...]
> >>> make -C daemons
> >>> make[1]: Nothing to be done for 'all'.
> >>> make -C test check_local
> >>> VERBOSE=0 ./lib/runner \
> >>>          --testdir . --outdir results \
> >>>          --flavours ndev-vanilla --only shell/lvchange-rebuild-raid.sh
> >>> --skip @
> >>> running 1 tests
> >>> ###      running: [ndev-vanilla] shell/lvchange-rebuild-raid.sh 0
> >>> | [ 0:00] lib/inittest: line 133:
> >>> /tmp/LVMTEST317948.iCoLwmDhZW/dev/testnull: Permission denied
> >>> | [ 0:00] Filesystem does support devices in
> >>> /tmp/LVMTEST317948.iCoLwmDhZW/dev (mounted with nodev?)
> >>
> >> I didn't read other mails in this thread, only for above issue.
> >> If you use opensuse, systemd service tmp.mount uses nodev option to mount
> >> tmpfs on /tmp.
> >> From my experience, there are two methods to fix(work around):
> >> 1. systemctl disable tmp.mount && systemctl mask tmp.mount && reboot
> >> 2. mv /usr/lib/systemd/system/tmp.mount /root/ && reboot
> >
> > I am using centos similar system, I can try leap later. Appreciate for the
> > tips, Heming.
>
>
> You can always redirect default /tmp dir to some other place/filesystem that
> allows you to create /dev nodes. Eventually for 'brave men'  you can let lvm2
> test suite to play directly with your /dev dir.  Normally nothing bad should
> happen, but we tend to prefer more controled '/dev' managed for a test.
>
> Here are two envvars to play with:
>
>
> make check_local T=shell/lvchange-rebuild-raid.sh LVM_TEST_DIR=/myhomefsdir
> LVM_TEST_DEVDIR=/dev
>
> LVM_TEST_DIR for setting of dir where test creates all its files
>
> LVM_TEST_DEVDIR  you can explicitly tell to keep using system's /dev
> (instead of dir created within tmpdir)

Hi Zdenek

I tried this command and the test was skipped. Does it need to add
more options for
the command?

make check_local T=shell/lvchange-rebuild-raid.sh
LVM_TEST_DIR=/root/test  LVM_TEST_DEVDIR=/dev

VERBOSE=0 ./lib/runner \
--testdir . --outdir results \
--flavours ndev-vanilla --only shell/lvchange-rebuild-raid.sh --skip @
running 1 tests
###      skipped: [ndev-vanilla] shell/lvchange-rebuild-raid.sh 0

### 1 tests: 0 passed, 1 skipped, 0 timed out, 0 warned, 0 failed

Regards
Xiao