Parallel clone CFS lock timeout issue

[sesaravanan]

We use Proxmox API for parallel full clones of same or different template from "nfs volume1" to target storage is "nfs volume 2" .
no of parallel : 20 to 30 clones at a time.
we experience below error. Is there any way to solve the issue?

create full clone of drive scsi0 (proxmox-images:777/base-777-disk-0.qcow2)
trying to acquire cfs lock 'storage-proxmox-images' ...
trying to acquire cfs lock 'storage-proxmox-images' ...
trying to acquire cfs lock 'storage-proxmox-images' ...
trying to acquire cfs lock 'storage-proxmox-images' ...
trying to acquire cfs lock 'storage-proxmox-images' ...
trying to acquire cfs lock 'storage-proxmox-images' ...
trying to acquire cfs lock 'storage-proxmox-images' ...
trying to acquire cfs lock 'storage-proxmox-images' ...
trying to acquire cfs lock 'storage-proxmox-images' ...
TASK ERROR: clone failed: cfs-lock 'storage-proxmox-images' error: got lock request timeout

 

[leesteken]

[SOLVED] Post in thread 'Parallel cloning'

Tuesday at 12:54

Hi @sesaravanan,
if you're doing this many clones in parallel, the lock might be too heavily contended for every task to get the chance to get it. That said, there was a proposed patch to improve the situation. It's not applied yet, and it still couldn't really be guaranteed that every task will get it with that many tasks at the same time.

• fiona

 

[sesaravanan]

Thanks for the response. I tried an approach to handle the lock mechanism and it works as expected, so testing in progress.
Able to create 10 parallel vms, with snapshot, revert, poweron/off, delete it works fine till now...and test in progress.
so far created more than 1000 vms.