FreeBSD HOWTO: Software Mirror System Disk
Hello is anybody there? I don't know if I'm subscribed... I have a question...is this a typo?: gmirror insert gm0 /dev/ad6 I get to that step and get the message class not found should it be?: gmirror insert boot /dev/ad6? or something? --signed, Confused ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: FreeBSD HOWTO: Software Mirror System Disk
Am Dienstag, 22. März 2005 22:01 schrieb Aaron Trumm: Hello is anybody there? I don't know if I'm subscribed... I have a question...is this a typo?: gmirror insert gm0 /dev/ad6 I get to that step and get the message class not found should it be?: gmirror insert boot /dev/ad6? You have already setup (with gmirror label) a mirror named gm0 right? What does 'gmirror list gm0' tell? Anyway, you'll find an answer in the very well written man page, like usual for FreeBSD man pages ;) -Harry or something? --signed, Confused ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] pgprFIHwU4T2v.pgp Description: PGP signature
FreeBSD HOWTO: Software Mirror System Disk
[ From http://dannyman.toldme.com/2005/01/24/freebsd-howto-gmirror-system/ ] A new feature of FreeBSD 5.3 is the ability to set up a software mirror of your system disk. This allows you to boot off either of a pair of hard disks, which will then function as a RAID1, which will ensure system uptime in the face of a single disk failure. As the documentation is a bit sketchy, heres a quick cheat sheet for setting this up with gmirror: (This crib sheet assumes you have a pair of identical IDE (in my case, SATA) drives identified as ad4 and ad6.) 1. Install FreeBSD on to ad4. 2. Reboot with the Install CD. 3. Enter Fixit mode, using Install CD disc2 as the live filesystem 4. # *chroot /dist* # *mount_devfs devfs /dev* # *gmirror label -v -b round-robin gm0 /dev/ad4* # *gmirror insert gm0 /dev/ad6* # *mount /dev/mirror/gm0s1a /mnt* # *echo geom_mirror_load=YES /mnt/boot/loader.conf* # *echo swapoff=YES /mnt/etc/rc.conf* 5. Edit /mnt/etc/fstab to convert ad4 - mirror/gm0 6. Reboot Thanks to the few dozen people who have come before me, and posted crucial hints to the mailing lists. Thanks also to Ralf S. Engelschall who has a far more verbose explanation of how to do this sort of thing with mis-matched disks. [See http://people.freebsd.org/~rse/mirror/ ] http://people.freebsd.org/%7Erse/mirror/ You should definately look over the gmirror man page, and review the output of *gmirror list gm0* when swapping out drives. You can disable automatic rebuild, etc. It is quite nice. Sincerely, -danny ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: FreeBSD HOWTO: Software Mirror System Disk
Danny Howard wrote: As the documentation is a bit sketchy, heres a quick cheat sheet for setting this up with gmirror: (This crib sheet assumes you have a pair of identical IDE (in my case, SATA) drives identified as ad4 and ad6.) Let me apologize for Thunderbird formatting my mail goofy. (I only use it for mailing lists, silly vim weenie.) Here's a little clean-up: 1. Install FreeBSD on to ad4. 2. Reboot with the Install CD. 3. Enter Fixit mode, using Install CD disc2 as the live filesystem 4. # chroot /dist # mount_devfs devfs /dev # gmirror label -v -b round-robin gm0 /dev/ad4 # gmirror insert gm0 /dev/ad6 # mount /dev/mirror/gm0s1a /mnt # echo geom_mirror_load=YES /mnt/boot/loader.conf # echo swapoff=YES /mnt/etc/rc.conf 5. Edit /mnt/etc/fstab to convert ad4 - mirror/gm0 6. Reboot -danny ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
