7.0/i386 to 8.0/amd64 - gmirror/gstripe migration
Hi! I am planning to move from 7.0-REL-i386 to 8.0-REL-amd64 in the near future. My OS drive is a single ata-133 80gb drive, and my data drives are four 1.5TB SATA drives. 6TB total, configured as 2x 3TB 'gstripe' volumes, and I am using gmirror to mirror those gstripe volumes. I hope that makes sense. In any case, I'd like to just unplug the drives, do my upgrade, plug the drives back in, and startup the array as I have in 7.0.I'm planning to just do a fresh install of 8.0 on a new SATA 80GB drive and make that my new OS drive. Does anyone foresee any serious problems with this plan? I know doing a whole version upgrade can sometimes introduce bugs when dealing with old setups, so I just want to cover my bases prior to the work. I am backing up this system to another system, so if I end up losing the data or having to rebuild the array, that's fine, it just sucks having to copy the 2TB of data over the wire afterward. Thanks for your help! ++AMARU ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: 7.0/i386 to 8.0/amd64 - gmirror/gstripe migration
No one has any idea? :( ++AMARU From: Amaru Netapshaak postfix_am...@yahoo.com To: freebsd-questions@freebsd.org Sent: Wed, May 19, 2010 9:33:14 AM Subject: 7.0/i386 to 8.0/amd64 - gmirror/gstripe migration Hi! I am planning to move from 7.0-REL-i386 to 8.0-REL-amd64 in the near future. My OS drive is a single ata-133 80gb drive, and my data drives are four 1.5TB SATA drives. 6TB total, configured as 2x 3TB 'gstripe' volumes, and I am using gmirror to mirror those gstripe volumes. I hope that makes sense. In any case, I'd like to just unplug the drives, do my upgrade, plug the drives back in, and startup the array as I have in 7.0.I'm planning to just do a fresh install of 8.0 on a new SATA 80GB drive and make that my new OS drive. Does anyone foresee any serious problems with this plan? I know doing a whole version upgrade can sometimes introduce bugs when dealing with old setups, so I just want to cover my bases prior to the work. I am backing up this system to another system, so if I end up losing the data or having to rebuild the array, that's fine, it just sucks having to copy the 2TB of data over the wire afterward. Thanks for your help! ++AMARU ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: 7.0/i386 to 8.0/amd64 - gmirror/gstripe migration
Hi! I am planning to move from 7.0-REL-i386 to 8.0-REL-amd64 SNIP! Does anyone foresee any serious problems with this plan? I know doing a whole version upgrade can sometimes introduce bugs when dealing with old setups, so I just want to cover my bases prior to the work. This sounds like the kind of thing Release notes were designed for. I was not able to find them on the first page of the FreeBSD website, but if you click the big Get FreeBSD Now button, there is a link in the table detailing the releases: http://www.freebsd.org/releases/8.0R/relnotes.html I am backing up this system to another system, so if I end up losing the data or having to rebuild the array, that's fine, it just sucks having to copy the 2TB of data over the wire afterward. Good idea ;) FreeBSD no longer supports dangerously dedicated UFS filesystems (section 2.2.5 of Detailed release notes) but I'm not sure if that is possible with gmirror. Thanks for your help! ++AMARU PS: Your reply to yourself was in the same digest message. Not everybody is in your timezone either. Regards, James Phillips ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: 7.0/i386 to 8.0/amd64 - gmirror/gstripe migration
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 20/05/2010 24:03:17, Amaru Netapshaak wrote: I am planning to move from 7.0-REL-i386 to 8.0-REL-amd64 in the near future. My OS drive is a single ata-133 80gb drive, and my data drives are four 1.5TB SATA drives. 6TB total, configured as 2x 3TB 'gstripe' volumes, and I am using gmirror to mirror those gstripe volumes. I hope that makes sense. Errr... the usual way of doing this is to create mirrored pairs of drives and then stripe the mirrors together (a.k.a RAID10 -- creating a pair of stripes and then mirroring them is RAID0+1). There's very little difference in performance characteristics between the two, but RAID10 is more failure resistant. Think about what happens if you lose one drive. In the RAID10 case one mirror pair runs in degraded mode. In the RAID0+1 case, one stripe -- half of your drives -- is out of action. In any case, I'd like to just unplug the drives, do my upgrade, plug the drives back in, and startup the array as I have in 7.0.I'm planning to just do a fresh install of 8.0 on a new SATA 80GB drive and make that my new OS drive. Should be fine. I've done source upgrades from 7.x to 8.0 and gmirror has just worked. If your old 7.0 drive is still in decent working order, it might be an idea to set up the new 8.0 drive as half of a gmirror, and then reuse the 7.0 drive as the other half once you're happy that the upgrade succeeded. If the disks aren't identical, you'll need to make sure that the new 8.0 disk is not bigger than the old 7.0 drive -- look at the number of sectors on each disk for the best comparison. Cheers, Matthew - -- Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate Kent, CT11 9PW -BEGIN PGP SIGNATURE- Version: GnuPG/MacGPG2 v2.0.14 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkv0y14ACgkQ8Mjk52CukIxK6wCdE9AEVBJbvT3IjT3CWpcYaam4 mk0An03OU96lPTtF7VigcT976Qr1ssdf =3yzZ -END PGP SIGNATURE- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
