On 20100623_054331, Ron Johnson wrote: > On 06/23/2010 05:20 AM, Javier Barroso wrote: > >On Wed, Jun 23, 2010 at 10:40 AM, Alan Chandler > ><a...@chandlerfamily.org.uk>wrote: > > > >>I feel I should move my entire /etc/fstab over to using uuids > >> > [snip] > >> > >>Which do I use, and what does the other one mean? > >> > > > >Get your uuid from dumpe2fs -h /dev/vg/lv | grep UUID > > > >But /dev/vg/lv is a persistent name, so no sense changing it to uuid, or > >maybe I'm missing something ? > > > > Or use labels.
In squeeze, a recent revision in pata support seemed to introduce rewriting /etc/fstab to reference all file systems via UUID. Before that, I had constructed a system using labels which was totally clobbered by the pata upgrade (which also suppressed all mention of /dev/hd[ab][123] ) I don't use LVM. Perhaps using LVM protects you from 'upgrades' from ata to pata. Or from future upgrades in pata support. But I'm inclined to believe that we are in for a spate of instability as pata is worked out in all its unintended ramifications. FYI, the UUID is just a 128 bit number that is stored in a 16 byte space in the superblock of the ext[234] file system. Mostly it is set to a random value by mke2fs when the fs is originally created. But it can also be set to a user designated (non-random?) value by tune2fs -U <UUID> device. -- Paul E Condon pecon...@mesanetworks.net -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20100624194611.gg3...@big.lan.gnu
