Re: [zfs-discuss] ZFS QoS and priorities

2012-11-29 Thread Bob Friesenhahn
On Thu, 29 Nov 2012, Jim Klimov wrote: I've heard a claim that ZFS relies too much on RAM caching, but implements no sort of priorities (indeed, I've seen no knobs to tune those) - so that if the storage box receives many different types of IO requests with different "administrative weights" in

Re: [zfs-discuss] Question about degraded drive

2012-11-29 Thread Chris Dunbar - Earthside, LLC
I tried the zpool replace on the failed drive. It returned an I/O error so I am assuming that is confirmation that the drive is indeed dead. I'll visit the data center to night and swap it out. Thanks for everybody's help! - Original Message - From: "Edward Ned Harvey (opensolarisisdeadl

Re: [zfs-discuss] query re disk mirroring

2012-11-29 Thread Edward Ned Harvey (opensolarisisdeadlongliveopensolaris)
> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- > boun...@opensolaris.org] On Behalf Of Enda o'Connor - Oracle Ireland - > > Say I have an ldoms guest that is using zfs root pool that is mirrored, > and the two sides of the mirror are coming from two separate vds > servers, that i

Re: [zfs-discuss] zfs on SunFire X2100M2 with hybrid pools

2012-11-29 Thread Edward Ned Harvey (opensolarisisdeadlongliveopensolaris)
> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- > boun...@opensolaris.org] On Behalf Of Jim Klimov > > this is > the part I am not certain about - it is roughly as cheap to READ the > gzip-9 datasets as it is to read lzjb (in terms of CPU decompression). Nope. I know LZJB is not

[zfs-discuss] query re disk mirroring

2012-11-29 Thread Enda o'Connor - Oracle Ireland - Software Engineer
Hi Say I have an ldoms guest that is using zfs root pool that is mirrored, and the two sides of the mirror are coming from two separate vds servers, that is mirror-0 c3d0s0 c4d0s0 where c3d0s0 is served by one vds server, and c4d0s0 is served by another vds server. Now if for some reaso

[zfs-discuss] ZFS QoS and priorities

2012-11-29 Thread Jim Klimov
I've heard a claim that ZFS relies too much on RAM caching, but implements no sort of priorities (indeed, I've seen no knobs to tune those) - so that if the storage box receives many different types of IO requests with different "administrative weights" in the view of admins, it can not really thr

Re: [zfs-discuss] ZFS Appliance as a general-purpose server question

2012-11-29 Thread Pasi Kärkkäinen
On Thu, Nov 29, 2012 at 09:42:21AM +0100, Grégory Giannoni wrote: > > Le 29 nov. 2012 à 09:27, Pasi Kärkkäinen a écrit : > >> The LSI 9240-4I was not able to connect to the 25-drives bay ; Not tested > >> LSI 9260-16I or LSI 9280-24i. > >> > > > > What was the problem connecting LSI 9240-4i to

Re: [zfs-discuss] ZFS Appliance as a general-purpose server question

2012-11-29 Thread Grégory Giannoni
Le 29 nov. 2012 à 09:27, Pasi Kärkkäinen a écrit : >> The LSI 9240-4I was not able to connect to the 25-drives bay ; Not tested >> LSI 9260-16I or LSI 9280-24i. >> > > What was the problem connecting LSI 9240-4i to the 25-drives bay? > The 25-drives backplane needs two SFF-8087 (multilane ca

Re: [zfs-discuss] ZFS Appliance as a general-purpose server question

2012-11-29 Thread Pasi Kärkkäinen
On Tue, Nov 27, 2012 at 08:52:06AM +0100, Grégory Giannoni wrote: > > The LSI 9240-4I was not able to connect to the 25-drives bay ; Not tested > LSI 9260-16I or LSI 9280-24i. > What was the problem connecting LSI 9240-4i to the 25-drives bay? -- Pasi