Re: [zfs-discuss] ZFS in S10U6 vs openSolaris 05/08

2008-05-27 Thread Rob Logan
There is something more to consider with SSDs uses as a cache device. why use SATA as the interface? perhaps http://www.tgdaily.com/content/view/34065/135/ would be better? (no experience) cards will start at 80 GB and will scale to 320 and 640 GB next year. By the end of 2008, Fusion io also

Re: [zfs-discuss] ZFS in S10U6 vs openSolaris 05/08

2008-05-27 Thread Richard Elling
Rob Logan wrote: There is something more to consider with SSDs uses as a cache device. why use SATA as the interface? perhaps http://www.tgdaily.com/content/view/34065/135/ would be better? (no experience) cards will start at 80 GB and will scale to 320 and 640 GB next year. By the end of

[zfs-discuss] slog devices don't resilver correctly

2008-05-27 Thread Joe Little
This past weekend, but holiday was ruined due to a log device replacement gone awry. I posted all about it here: http://jmlittle.blogspot.com/2008/05/problem-with-slogs-how-i-lost.html In a nutshell, an resilver of a single log device with itself, due to the fact one can't remove a log device

Re: [zfs-discuss] indiana as nfs server: crash due to zfs

2008-05-27 Thread Joe Little
On Mon, May 26, 2008 at 6:10 AM, Gerard Henry [EMAIL PROTECTED] wrote: hello all, i have indiana freshly installed on a sun ultra 20 machine. It only does nfs server. During one night, the kernel had crashed, and i got this messages: May 22 02:18:57 ultra20 unix: [ID 836849 kern.notice]

Re: [zfs-discuss] indiana as nfs server: crash due to zfs

2008-05-27 Thread Victor Latushkin
Gerard Henry wrote: hello all, i have indiana freshly installed on a sun ultra 20 machine. It only does nfs server. During one night, the kernel had crashed, and i got this messages: May 22 02:18:57 ultra20 unix: [ID 836849 kern.notice] May 22 02:18:57 ultra20

Re: [zfs-discuss] ZFS in S10U6 vs openSolaris 05/08

2008-05-27 Thread Mike Gerdts
On Tue, May 27, 2008 at 12:44 PM, Rob Logan [EMAIL PROTECTED] wrote: There is something more to consider with SSDs uses as a cache device. why use SATA as the interface? perhaps http://www.tgdaily.com/content/view/34065/135/ would be better? (no experience) cards will start at 80 GB and

Re: [zfs-discuss] slog devices don't resilver correctly

2008-05-27 Thread Eric Schrock
Yeah, I noticed this the other day while I was working on an unrelated problem. The basic problem is that log devices are kept within the normal vdev tree, and are only distinguished by a bit indicating that they are log devices (and is the source for a number of other inconsistencies that Pwel

Re: [zfs-discuss] ZFS in S10U6 vs openSolaris 05/08

2008-05-27 Thread Andy Lubel
On May 27, 2008, at 1:44 PM, Rob Logan wrote: There is something more to consider with SSDs uses as a cache device. why use SATA as the interface? perhaps http://www.tgdaily.com/content/view/34065/135/ would be better? (no experience) We are pretty happy with RAMSAN SSD's (ours is RAM

Re: [zfs-discuss] ZFS in S10U6 vs openSolaris 05/08

2008-05-27 Thread Bill McGonigle
On May 23, 2008, at 22:21, Richard Elling wrote: Consider a case where you might use large, slow SATA drives (1 TByte, 7,200 rpm) for the main storage, and a single small, fast (36 GByte, 15krpm) drive for the L2ARC. This might provide a reasonable cost/performance trade-off. Ooh,

Re: [zfs-discuss] slog devices don't resilver correctly

2008-05-27 Thread Joe Little
On Tue, May 27, 2008 at 1:50 PM, Eric Schrock [EMAIL PROTECTED] wrote: Yeah, I noticed this the other day while I was working on an unrelated problem. The basic problem is that log devices are kept within the normal vdev tree, and are only distinguished by a bit indicating that they are log

Re: [zfs-discuss] slog devices don't resilver correctly

2008-05-27 Thread Eric Schrock
Joe - We definitely don't do great accounting of the 'vdev_islog' state here, and it's possible to create a situation where the parent replacing vdev has the state set but the children do not, but I have been unable to reproduce the behavior you saw. I have rebooted the system during resilver,

Re: [zfs-discuss] slog devices don't resilver correctly

2008-05-27 Thread Joe Little
On Tue, May 27, 2008 at 4:50 PM, Eric Schrock [EMAIL PROTECTED] wrote: Joe - We definitely don't do great accounting of the 'vdev_islog' state here, and it's possible to create a situation where the parent replacing vdev has the state set but the children do not, but I have been unable to

Re: [zfs-discuss] slog devices don't resilver correctly

2008-05-27 Thread Neil Perrin
Joe Little wrote: On Tue, May 27, 2008 at 4:50 PM, Eric Schrock [EMAIL PROTECTED] wrote: Joe - We definitely don't do great accounting of the 'vdev_islog' state here, and it's possible to create a situation where the parent replacing vdev has the state set but the children do not, but I have

Re: [zfs-discuss] ZFS Project Hardware

2008-05-27 Thread Bryan Wagoner
I'm using a gigabyte I-RAM card with cheap memory for my slog device with great results. Of course I don't have as much memory as you do in my project box. I also want to use the left over space on the I-ram and dual purpose it for a readzilla cache device and slog. Picked it up off ebay