[ovirt-users] Re: NFS Storage Advice?

2018-07-29 Thread Denys Oryshchenko
Wesley, Try to disable compression on zfs fs On 07/28/2018 11:01 AM, Wesley Stewart wrote: Windows reportes about 500-600 MB/s over a 4GB file. However I believe I found the issue. My NFS backend is ZFS which is apparently notorious for horrible sync writes.

[ovirt-users] Re: NFS Storage Advice?

2018-07-28 Thread Karli Sjöberg
On Jul 28, 2018 22:17, Denys Oryshchenko wrote: Wesley, Try to disable compression on zfs fsNooo! Quiet the contrary, compression actually improves writing, as you won't have to write as much as without it! On 07/28/2018 11:01 AM, Wesley Stewart wrote: Windows reportes about 500-600 MB/s over

[ovirt-users] Re: NFS Storage Advice?

2018-07-28 Thread Wesley Stewart
Windows reportes about 500-600 MB/s over a 4GB file. However I believe I found the issue. My NFS backend is ZFS which is apparently notorious for horrible sync writes. https://forums.freenas.org/index.php?threads/sync-writes-or-why-is-my-esxi-nfs-so-slow-and-why-is-iscsi-faster.12506/ I will

[ovirt-users] Re: NFS Storage Advice?

2018-07-28 Thread Karli Sjöberg
On Jul 28, 2018 19:30, Wesley Stewart wrote:I have added the "async" option to the "additional mount options" section.Transferring from my raided SSD mirrors is QUITE fast now.However, this might be confusing, but if I read/write to the nfs share at the same time performance plummits.  So if I

[ovirt-users] Re: NFS Storage Advice?

2018-07-28 Thread Wesley Stewart
I have added the "async" option to the "additional mount options" section. Transferring from my raided SSD mirrors is QUITE fast now. However, this might be confusing, but if I read/write to the nfs share at the same time performance plummits. So if I grab something from the SMB share over 10gb

[ovirt-users] Re: NFS Storage Advice?

2018-07-28 Thread Karli Sjöberg
On Jul 28, 2018 01:01, Wesley Stewart wrote:I currently have a NFS server with decent speeds.  I get about 200MB/s write and 400+ MB/s read.  My single node oVirt host has a mirrored SSD store for my Windows 10 VM, and I have about 3-5 VMs running on the NFS data store.However, VM/s on the NFS