Re: Create GMIRROR only one slice
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 29/03/2010 21:10:42, krad wrote: You will need to newfs the gmirror device after that so backup the data currently on /, then copy it back afterwards. This is counter to all my experience of dealing with gmirror -- it's carefully designed so that the metadata it writes to the drive *doesn't* interfere with the filesystem. While it is always a good idea to have backups, I do not believe that destroying and recreating the filesystem should be necessary. 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/ iEYEARECAAYFAkuxopAACgkQ8Mjk52CukIxvZwCaAgTijPzbHoL5whM6F3GQax2N eN4An3/HZSRgUml7jy+IpYRyK0rEfGRr =e+4T -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
Re: Create GMIRROR only one slice
2010/3/30 Matthew Seaman m.sea...@infracaninophile.co.uk -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 29/03/2010 21:10:42, krad wrote: You will need to newfs the gmirror device after that so backup the data currently on /, then copy it back afterwards. This is counter to all my experience of dealing with gmirror -- it's carefully designed so that the metadata it writes to the drive *doesn't* interfere with the filesystem. While it is always a good idea to have backups, I do not believe that destroying and recreating the filesystem should be necessary. 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/ iEYEARECAAYFAkuxopAACgkQ8Mjk52CukIxvZwCaAgTijPzbHoL5whM6F3GQax2N eN4An3/HZSRgUml7jy+IpYRyK0rEfGRr =e+4T -END PGP SIGNATURE- Im pretty sure that it will nick the last sector from the slice, so you will at least need to fsck it. If its a production system i would always go for the cleaner approach as well and newfs is about as clean as it gets. ___ 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: Create GMIRROR only one slice
2010/3/29 Дмитрий Бехтерев dbehte...@gmail.com -- Пересланное сообщение -- От кого: Дмитрий Бехтерев dbehte...@gmail.com Дата: 25 марта 2010 г. 19:03 Тема: Create GMIRROR only one slice Кому: freebsd-g...@freebsd.org Hello all! I have problem with creating GMIRROR on select slice. So, I have two slice: ls /dev | grep ad4 ad4 ad4s1 ad4s1a ad4s1b ad4s1c ad4s2 ad4s2p1 fdisk /dev/ad4 ... The data for partition 1 is: sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD) start 63, size 29350692 (14331 Meg), flag 80 (active) beg: cyl 0/ head 1/ sector 1; end: cyl 1023/ head 254/ sector 63 The data for partition 2 is: sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD) start 29350755, size 595786590 (290911 Meg), flag 0 beg: cyl 1023/ head 255/ sector 63; end: cyl 1023/ head 254/ sector 63 The data for partition 3 is: UNUSED The data for partition 4 is: UNUSED On first slice I created ufs slice and on second - ZFS pool (I build it with glabel): mount /dev/ad4s1a on / (ufs, local) devfs on /dev (devfs, local) tank on /tank (zfs, local) tank/usr on /usr (zfs, local) ... tank/var on /var (zfs, local) glabel list Geom name: ad4s2p1 ... I want GMIRROR'ing /dev/ad4s1: gmirror label -v -b round-robin gm0 /dev/ad4s1 but I get error Operation not permitted (although I set sysctl kern.geom.debugflags=16). MY OS: FreeBSD 7.3 Stable. What should I do to do this? Thanks all. ___ 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 Dont boot into the os, create the gmirror from the fixit mode of a cd, or build a usb stick with freebsd on. You will need to newfs the gmirror device after that so backup the data currently on /, then copy it back afterwards. I have to ask, as you are using zfs why not just do a zfs root? If you do decide to go for this option, use gpart to create gpt layouts, as you wont run into partition size limitations if you upgrade the drives to big ones in the future ___ 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
