Re: [zfs-discuss] ZFS mirror and read policy; kstat I/O values for zfs

2006-05-26 Thread Jeff Bonwick
> You are almost certainly running in to this known bug: > > 630 reads from mirror are not spread evenly Right. FYI, we fixed this in build 38. Jeff ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailma

Re: [zfs-discuss] ZFS mirror and read policy; kstat I/O values for zfs

2006-05-26 Thread Matthew Ahrens
On Fri, May 26, 2006 at 09:40:57PM +0200, Daniel Rock wrote: > So you can see the second disk of each mirror pair (c4tXd0) gets almost no > I/O. How does ZFS decide from which mirror device to read? You are almost certainly running in to this known bug: 630 reads from mirror are not

[zfs-discuss] ZFS mirror and read policy; kstat I/O values for zfs

2006-05-26 Thread Daniel Rock
Hi, after some testing with ZFS I noticed that read requests are not scheduled even to the drives but the first one gets predominately selected: My pool is setup as follows: NAMESTATE READ WRITE CKSUM tpc ONLINE 0 0 0 mirrorONLI