Hello, I just finalize the migration our 3.8.3 ONE to 4.2 and was forced to change my plan to put datastore 0 on NFS4 because of slow accesses.
For non persistent images they use local datastore 0, but persistent
ones use NFS (via the symlink).
All my images are qcow2.
I have a dedicated VLAN for storage access, and my nodes are mounting
the datastores as:
10.255.255.2:/one-datastores on /var/lib/one/datastores type nfs4
(rw,relatime,vers=4,rsize=262144,wsize=262144,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=10.255.255.4,minorversion=0,fsc,local_lock=none,addr=10.255.255.2,_netdev)
I remember seeing a document about different cache scenarios and
performance but I can not remember where.
My setup is a tree nodes ONE:
- one not very powerfull frontend
- two quite powerful nodes to run VMs (core i7 + 16Go RAM)
My storage is what they call “workgroup NAS” with dual gigabit nics
configured in bonding.
I'm wondering about using RAID1+0 instead of the RAID5 to improve disk
access performances and lower CPU usage.
Any hints or idea?
Regards.
--
Daniel Dehennin
Récupérer ma clef GPG:
gpg --keyserver pgp.mit.edu --recv-keys 0x7A6FE2DF
pgpXQ2K0JUWS7.pgp
Description: PGP signature
_______________________________________________ Users mailing list Users@lists.opennebula.org http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
