Re: [zfs-discuss] Changing rpool device paths/drivers

2012-10-19 Thread Jim Klimov
Hello all, I have one more thought - or a question - about the current strangeness of rpool import: is it supported, or does it work, to have rpools on multipathed devices? If yes (which I hope it is, but don't have a means to check) what sort of a string is saved into the pool's labels as

Re: [zfs-discuss] Changing rpool device paths/drivers

2012-10-19 Thread James C. McPherson
On 19/10/12 04:50 PM, Jim Klimov wrote: Hello all, I have one more thought - or a question - about the current strangeness of rpool import: is it supported, or does it work, to have rpools on multipathed devices? If yes (which I hope it is, but don't have a means to check) what sort of a

Re: [zfs-discuss] Changing rpool device paths/drivers

2012-10-19 Thread Jim Klimov
Thanks, more Qs below ;) 2012-10-19 11:16, James C. McPherson wrote: if you run /usr/bin/strings over /etc/zfs/zpool.cache, you'll see that not only is the device path stored, but (more importantly) the devid. As an excerpt from my adventurous notebook, which only has an rpool on SAS, I see

Re: [zfs-discuss] Changing rpool device paths/drivers

2012-10-19 Thread Edward Ned Harvey (opensolarisisdeadlongliveopensolaris)
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- boun...@opensolaris.org] On Behalf Of James C. McPherson As far as I'm aware, having an rpool on multipathed devices is fine. Even a year ago, a new system I bought from Oracle came with multipath devices for all devices by

Re: [zfs-discuss] Changing rpool device paths/drivers

2012-10-19 Thread James C. McPherson
On 19/10/12 09:27 PM, Edward Ned Harvey (opensolarisisdeadlongliveopensolaris) wrote: From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- boun...@opensolaris.org] On Behalf Of James C. McPherson As far as I'm aware, having an rpool on multipathed devices is fine. Even a year ago,

Re: [zfs-discuss] Changing rpool device paths/drivers

2012-10-19 Thread Richard Elling
On Oct 19, 2012, at 12:16 AM, James C. McPherson j...@opensolaris.org wrote: On 19/10/12 04:50 PM, Jim Klimov wrote: Hello all, I have one more thought - or a question - about the current strangeness of rpool import: is it supported, or does it work, to have rpools on multipathed devices?

Re: [zfs-discuss] Changing rpool device paths/drivers

2012-10-05 Thread Jim Klimov
2012-10-05 4:57, Jerry Kemp wrote: Its been awhile, but it seems like in the past, you would power the system down, boot from removable media, import your pool then destroy or archive the /etc/zfs/zpool.cache, and possibly your /etc/path_to_inst file, power down again and re-arrange your

Re: [zfs-discuss] Changing rpool device paths/drivers

2012-10-04 Thread Jerry Kemp
Its been awhile, but it seems like in the past, you would power the system down, boot from removable media, import your pool then destroy or archive the /etc/zfs/zpool.cache, and possibly your /etc/path_to_inst file, power down again and re-arrange your hardware, then come up one final time with a

Re: [zfs-discuss] Changing rpool device paths/drivers

2012-10-04 Thread Jens Elkner
On Thu, Oct 04, 2012 at 07:57:34PM -0500, Jerry Kemp wrote: I remember a similar video that was up on YouTube as done by some of the Sun guys employed in Germany. They build a big array from USB drives, then exported the pool. Once the system was down, they re-arranged all the drives in

Re: [zfs-discuss] Changing rpool device paths/drivers

2012-10-04 Thread Jerry Kemp
thanks for the link. This was the youtube link that I had. http://www.youtube.com/watch?v=1zw8V8g5eT0 Jerry On 10/ 4/12 08:07 PM, Jens Elkner wrote: On Thu, Oct 04, 2012 at 07:57:34PM -0500, Jerry Kemp wrote: I remember a similar video that was up on YouTube as done by some of the Sun

Re: [zfs-discuss] Changing rpool device paths/drivers

2012-10-03 Thread Ray Arachelian
On 10/03/2012 05:54 AM, Jim Klimov wrote: Hello all, It was often asked and discussed on the list about how to change rpool HDDs from AHCI to IDE mode and back, with the modern routine involving reconfiguration of the BIOS, bootup from separate live media, simple import and export of the

Re: [zfs-discuss] Changing rpool device paths/drivers

2012-10-03 Thread Jim Klimov
2012-10-03 14:40, Ray Arachelian пишет: On 10/03/2012 05:54 AM, Jim Klimov wrote: Hello all, It was often asked and discussed on the list about how to change rpool HDDs from AHCI to IDE mode and back, with the modern routine involving reconfiguration of the BIOS, bootup from separate live

Re: [zfs-discuss] Changing rpool device paths/drivers

2012-10-03 Thread Fajar A. Nugraha
On Wed, Oct 3, 2012 at 5:43 PM, Jim Klimov jimkli...@cos.ru wrote: 2012-10-03 14:40, Ray Arachelian пишет: On 10/03/2012 05:54 AM, Jim Klimov wrote: Hello all, It was often asked and discussed on the list about how to change rpool HDDs from AHCI to IDE mode and back, with the modern

Re: [zfs-discuss] Changing rpool device paths/drivers

2012-10-03 Thread Jim Klimov
2012-10-03 16:04, Fajar A. Nugraha wrote: On Ubuntu + zfsonlinux + root/boot on zfs, the boot script helper is smart enough to try all available device nodes, so it wouldn't matter if the dev path/id/name changed. But ONLY if there's no zpool.cache in the initramfs. Not sure how easy it would