Dne 09. 12. 19 v 15:18 Łukasz Czerpak napsal(a):
hi,
Sure, I will update the kernel as per your recommendation. Thank you for help
and prompt replies!
In regards to “sharing thin-pool” - there are no VMs, only LXD that is using
VG and thin-pool. After digging more I found relevant article:
https://discuss.linuxcontainers.org/t/is-it-safe-to-create-an-lvm-backed-storage-pool-that-can-be-shared-with-other-logical-volumes/5658/5
This might be the reason. I will investigate it more and share results here.
Usage of any containers with DM is seriously non-trivial task (especially if
you are dealing with anything more complex then 'linear' dm target).
Linux device is not a containerized resource a there need to exist something
like a 'cluster locking' mechanism how to manipulate with devices and metadata.
If you are on a single host - there is used 'file locking' - but if you start
to manipulate lvm2 metadata from multiple containers at the same time -
without 'locking' mechanism between all commands - it will soon go ballistic
and explode... (and it's actually weird you managed to go as high as 500
transactions without noticing problem...)
Zdenek
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