Re: [zfs-discuss] Scrub issues

2010-06-14 Thread George Wilson
Richard Elling wrote: On Jun 14, 2010, at 2:12 PM, Roy Sigurd Karlsbakk wrote: Hi all It seems zfs scrub is taking a big bit out of I/O when running. During a scrub, sync I/O, such as NFS and iSCSI is mostly useless. Attaching an SLOG and some L2ARC helps this, but still, the problem remains

Re: [zfs-discuss] Scrub issues

2010-06-14 Thread Richard Elling
On Jun 14, 2010, at 2:12 PM, Roy Sigurd Karlsbakk wrote: > Hi all > > It seems zfs scrub is taking a big bit out of I/O when running. During a > scrub, sync I/O, such as NFS and iSCSI is mostly useless. Attaching an SLOG > and some L2ARC helps this, but still, the problem remains in that the scr

Re: [zfs-discuss] Scrub issues

2010-06-14 Thread Robert Milkowski
On 14/06/2010 22:12, Roy Sigurd Karlsbakk wrote: Hi all It seems zfs scrub is taking a big bit out of I/O when running. During a scrub, sync I/O, such as NFS and iSCSI is mostly useless. Attaching an SLOG and some L2ARC helps this, but still, the problem remains in that the scrub is given ful

[zfs-discuss] Scrub issues

2010-06-14 Thread Roy Sigurd Karlsbakk
Hi all It seems zfs scrub is taking a big bit out of I/O when running. During a scrub, sync I/O, such as NFS and iSCSI is mostly useless. Attaching an SLOG and some L2ARC helps this, but still, the problem remains in that the scrub is given full priority. Is this problem known to the developer