[ovirt-users] Re: Ovirt vs lvm?
-------- Eredeti levél --------
Feladó: Strahil Nikolov < hunter86_bg(a)yahoo.com (Link ->
mailto:hunter86_bg@yahoo.com) >
Dátum: 2020 április 26 07:57:43
Tárgy: Re: [ovirt-users] Ovirt vs lvm?
Címzett: csabany(a)freemail.hu (Link -> mailto:csabany@freemail.hu)
On April 25, 2020 11:07:23 PM GMT+03:00, csabany(a)freemail.hu wrote:
Hi,
Our production ovirt system looks like: standalone management server,
vesion 4.3.9, 6 clusters, 28 nodes (v4.2, v4.3) , one storage domain,
(FC SAN Storages), centos7 vm-s , and some windows vms.
I have a returning problem. Sometime when i power off a vm and power on
again , i get an error message our linux vm (when we use lvm of
course): dracut: Read-only locking type set. Write locks are
prohibited., dracut: Can't get lock for vg.
I can repair only 70% of damaged vm.
I tried to localize the problem, but a can`t. The error occured
randomly every cluster, every storage on last 2 years.
Has anyone ever encountered such a problem?
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I haven't seen such issue so far, but I can only recommend yoiu to clone such VM
next time, so you can try to figure out what is going on.
During the repair, have you tried rebuilding the initramfs after the issue happens ?
Best Regards,
Strahil Nikolov
Thanks for advice!
Definitely yes, i make a new initramfs by dracut.
When this error occure, the locking_type parameter in darcut lvm.conf file changed to 4.
I write back to 1: lvm vhchange -ay --config ' global {locking_type=1} '
then write back the locking_type in /etc/lvm/lvm.conf to 1.
Then exit and (if i have a lucky day) the dracut -v -f build's a new initramfs and the
vm works fine.
The issue appear's in couple, so if i found a vm for this "error" one in the
others running vms has this error too.
csabany
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