Re: [zfs-discuss] ZFS vs NFS vs array caches, revisited

2007-02-13 Thread Marion Hakanson
[EMAIL PROTECTED] said: > The only obvious thing would be if the exported ZFS filesystems where > initially mounted at a point in time when zil_disable was non-null. No changes have been made to zil_disable. It's 0 now, and we've never changed the setting. Export/import doesn't appear to change

Re: [zfs-discuss] ZFS vs NFS vs array caches, revisited

2007-02-02 Thread Marion Hakanson
[EMAIL PROTECTED] said: > The reality is that > ZFS turns on the write cache when it owns the > whole disk. > _Independantly_ of that, > ZFS flushes the write cache when ZFS needs to insure > that data reaches stable storage. > > The point is that the flushes occur whether

Re: [zfs-discuss] ZFS vs NFS vs array caches, revisited

2007-02-02 Thread Roch - PAE
Marion, this is a common misintrepetation : "Anyway, I've also read that if ZFS notices it's using "slices" instead of whole disks, it will not enable/use the write cache. " The reality is that ZFS turns on the write cache when it owns the whole disk. _Independ