Hi everyone:
I met problem as follows:
Description of problem:
When exec "reboot" or "shutdown -h 0" cmd on vdsm server, the vdsm server
will reboot or shutdown more than 30 minutes. the screen shows '[FAILED] Failed
unmouting /rhev/data-center/mnt/172.18.81.41:_home_nfs_data'.
other messages may be useful:
This message was shown in the screen.
[] watchdog: watchdog0: watchdog did not stop! []systemd-shutdown[5594]: Failed
to unmount /rhev/data-center/mnt/172.18.81.14:_home_nfs_data: Device or
resource busy
[]systemd-shutdown[1]: Failed to wait for process: Protocol error
[]systemd-shutdown[5595]: Failed to remount '/' read-only: Device or resource
busy
[]systemd-shutdown[1]: Failed to wait for process: Protocol error
dracut Warning: Killing all remaining processes
dracut Warning: Killing all remaining processes
Version-Release number of selected component (if applicable):
Software Version:4.2.8.2-1.el7
OS: CentOS Linux release 7.5.1804 (Core)How reproducible:
100%
Steps to Reproduce:
1. my test enviroment is one Ovirt engine(172.17.81.17) with 4 vdsm servers,
exec "reboot" cmd in one of the vdsm servers(172.17.99.105), the server will
reboot more than 30 minutes.ovirt-engine : 172.17.81.17/16
vdsm: 172.17.99.105/16
nfs server: 172.17.81.14/16Actual results:
As above. the server will reboot more than 30 minutes
Expected results:
the server will reboot in a short time.
What I have done:
I have capture packet in nfs server while vdsm is rebooting, I found vdsm
server keeps sending nfs packet to nfs server circularly ;there are some log
files while I reboot vdsm 172.17.99.105 in 2020-10-26 22:12:34. Some conclusion
is:
1. the vdsm.log said the vdsm 2020-10-26 22:12:34,461+0800 ERROR (check/loop)
[storage.Monitor] Error checking path
/rhev/data-center/mnt/172.18.81.14:_home_nfs_data/02c4c6ea-7ca9-40f1-a1d0-f1636bc1824e/dom_md/metadata
2. the sanlock.log said 2020-10-26 22:13:05 1454 [3301]: s1 delta_renew read
timeout 10 sec offset 0
/rhev/data-center/mnt/172.18.81.14:_home_nfs_data/02c4c6ea-7ca9-40f1-a1d0-f1636bc1824e/dom_md/ids
3. there is nothing message import to this issue.The logs is in the
attachment.I'm very appreciate if anyone can help me. Thank you.Your
Sincerely,Mark Lee
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