[zfs-discuss] Does the zpool cache file affect import?

2011-08-29 Thread Gary Mills
I have a system with ZFS root that imports another zpool from a start method. It uses a separate cache file for this zpool, like this: if [ -f $CCACHE ] then echo "Importing $CPOOL with cache $CCACHE" zpool import -o cachefile=$CCACHE -c $CCACHE $CPOOL

[zfs-discuss] BAD WD drives - defective by design?

2011-08-29 Thread Roy Sigurd Karlsbakk
Hi all It seems recent WD drives that aren't "Raid edition" can cause rather a lot of problems on RAID systems. We have a few machines with LSI controllers (6801/6081/9201) and we're seeing massive errors occuring. The usual pattern is a drive failing or even a resilver/scrub starting and then,

Re: [zfs-discuss] [OpenIndiana-discuss] BAD WD drives - defective by design?

2011-08-29 Thread Rich
The drives are attached to a backplane? Try using 4k sector sizes and see if that improves it - I've seen and been part of a number of discussions which involved this - and you, I think, actually. - Rich On Mon, Aug 29, 2011 at 5:07 PM, Roy Sigurd Karlsbakk wrote: > Hi all > > It seems recent

Re: [zfs-discuss] [OpenIndiana-discuss] BAD WD drives - defective by design?

2011-08-29 Thread Roy Sigurd Karlsbakk
All drives have 512b sector sizes, WD FASS (blacks) and WD EADS (greens) both use plain old 512 sectors. - Original Message - > The drives are attached to a backplane? > > Try using 4k sector sizes and see if that improves it - I've seen and > been part of a number of discussions whi

Re: [zfs-discuss] [OpenIndiana-discuss] BAD WD drives - defective by design?

2011-08-29 Thread Roy Sigurd Karlsbakk
And, yes, they're connected to an LSI SAS expander from Super Micro. Works well with Seagate and Hitachi, but not with WD - Original Message - > The drives are attached to a backplane? > > Try using 4k sector sizes and see if that improves it - I've seen and > been part of a number o

Re: [zfs-discuss] Does the zpool cache file affect import?

2011-08-29 Thread LaoTsao
Q? are you intent to import this zpool to different host? Sent from my iPad Hung-Sheng Tsao ( LaoTsao) Ph.D On Aug 29, 2011, at 14:13, Gary Mills wrote: > I have a system with ZFS root that imports another zpool from a start > method. It uses a separate cache file for this zpool, like this: >

Re: [zfs-discuss] Does the zpool cache file affect import?

2011-08-29 Thread Richard Elling
Hi Gary, We use this method to implement NexentaStor HA-Cluster and, IIRC, Solaris Cluster uses shared cachefiles, too. More below... On Aug 29, 2011, at 11:13 AM, Gary Mills wrote: > I have a system with ZFS root that imports another zpool from a start > method. It uses a separate cache file f

Re: [zfs-discuss] Does the zpool cache file affect import?

2011-08-29 Thread Gary Mills
On Mon, Aug 29, 2011 at 07:56:16PM -0400, LaoTsao wrote: > Q? > are you intent to import this zpool to different host? Yes, it can be imported on another server. That part works when it has been exported cleanly first. I was concerned about a possible import failure when the original server lost

Re: [zfs-discuss] Does the zpool cache file affect import?

2011-08-29 Thread Gary Mills
On Mon, Aug 29, 2011 at 05:24:18PM -0700, Richard Elling wrote: > We use this method to implement NexentaStor HA-Cluster and, IIRC, > Solaris Cluster uses shared cachefiles, too. More below... Mine's a cluster too, with quite a simple design. > On Aug 29, 2011, at 11:13 AM, Gary Mills wrote: > >

Re: [zfs-discuss] zfs send and zfs destroy at the same time

2011-08-29 Thread Edward Ned Harvey
> From: Richard Elling [mailto:richard.ell...@gmail.com] > >> What do you expect to happen if you're in progress doing a zfs send, and >> then simultaneously do a zfs destroy of the snapshot you're sending? > > It depends on the release. For modern implementations, a hold is placed on > the snaps

Re: [zfs-discuss] ZFS raidz on top of hardware raid0

2011-08-29 Thread Edward Ned Harvey
> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- > boun...@opensolaris.org] On Behalf Of Daniel Carosone > > On Sat, Aug 27, 2011 at 08:44:13AM -0700, Richard Elling wrote: > > I'm getting a but tired of people designing for fast resilvering. > > It is a design consideration, rega

[zfs-discuss] Advice with SSD, ZIL and L2ARC

2011-08-29 Thread Jesus Cea
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi all. Sorry if I am asking a FAQ, but I haven't found a really authorizative answer to this. Most references are old, incomplete or of "I have heard of" kind. I am running Solaris 10 Update 9, and my pool is v22. I recently got two 40GB SSD I plan

Re: [zfs-discuss] Advice with SSD, ZIL and L2ARC

2011-08-29 Thread Michael DeMan
Are you truly new to ZFS? Or do you work for NetApp or EMC or somebody else that is curious? - Mike On Aug 29, 2011, at 9:15 PM, Jesus Cea wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > Hi all. Sorry if I am asking a FAQ, but I haven't found a really > authorizative answer to t