self-hosting nfs and live-migration in 1.4

[jo512]

i have a pve-cluster (1.4 release) with 3 hosts. one of them has a big storage attached, which i want to use as shared storage for pve. so i installed nfs-server on this host and use the storage as shared-storage in the cluster, so the pve-host with the nfs-server mounts its own storage over nfs. all works well, but when i do a live migration the cluster somehow doesn't recognise the storage as shared and starts to rsync. is there some other way to use the storage of one clustermember as shared-storage in the cluster?

thanks
jo

 

[dietmar]

Please can you post your storage configuration (/etc/pve/storage.cfg)

 

[jo512]

here it is

 

[dietmar]

Please can you also post the VM config (/etc/qemu-server/VMID.conf) and the migration log?

 

[jo512]

strange enough, it works now!

what i have done in the meantime:

* attach new nfs-storage ("external" nfs server)
* create test-vm on new storage
* live-migrate (works)
* live migrate back (works)
* destroy test-vm
* detach "external" nfs-server

dont know if above has anything to do with it but now the live-migration works also on the "internal" nfs without rsync.

thanks anyway, problem solved.

p.s.: live-migration is REALLY fast, for a small machine (low memory) i dont even lose 1 ping! great stuff this!!!

 

[dietmar]

strange enough, it works now!

Maybe you had left some 'unused' disk on the local storage which belongs to the VM you migrated? If so, that unused disk is rsynced to the other host by qmigrate.

 

[jo512]

of course you are right! there was a manually created copy of one disk on the local store which got synced during migration. is now deleted and everything works as expected.

great software, great support!