On Sat, Sep 1, 2012 at 5:58 PM, Mark Allums <m...@allums.com> wrote: > On 9/1/2012 4:46 PM, Hendrik Boom wrote: >> On Sat, 01 Sep 2012 16:02:54 -0500, Mark Allums wrote: >>> On 9/1/2012 3:17 PM, Hendrik Boom wrote: >>>> >>>> Can squeeze boot when / is on an LVM over RAID1? >>>> >>>> Can it boot if /boot is on the LVM over RAID1? >>>> >>>> Or when /boot is on a nonRAID nonLVM partition but / is on an LVM over >>>> RAID? >>>> >>>> Context: I have to remove the hard drive my / is on. The available >>>> space to move it to is on a RAID drive. >>>> >>>> The disks carrying the RAID also have small nonRAID nonLVM partitions >>>> that would be big enough for /boot, but not all of / >>>> >>>> -- hendrik >>> >>> >>> >>> The usual practice is to put everything except /boot on LVM. /boot can >>> theoretically go on LVM too, but it's simpler to leave it out/off of >>> LVM. /boot can go on RAID, easily, though, and I always put it on a >>> RAID 1 partition. >>> >>> So, yes, squeeze can boot with / on LVM, whether over RAID or otherwise. >> >> Thanks. Will try it in the next few days. Will also install grub to the >> MBR of all my disks, so whichever gets picked at boot time will work. >> >> Is there an eaasy way to do this, so that they'll all get updated as >> necessary when aptitude installs a new kernel? Or it this not something >> that the MBR cares about? >> >> And is th association of, say, /dev/sdb with a particular hard drive >> consistent if there's no change in hardware, or does it depend on random >> boot-tine timing issues? > > As Tom H mentioned, on standard Squeeze, not partitioned RAID. Sorry for > the confusion. > > You should use UUIDs or labels if you wand to reliably always boot or mount > a particular partition. The /dev/sdx designations are subject to the winds > of variability in a system, and it apparently has been deemed unnecessary to > sort this out, since UUIDs and labels are available. > > Some distributions are smart enough to write the MBR to all disks in a RAID > 1, and others are not. I don't recall if Squeeze will or won't, or or if > Wheezy will, for that matter. I haven't installed either recently enough to > need to find out.
I haven't done a raid install in a while because I've been preseeding them. But, by default, Debian's d-i (as opposed to Ubuntu's d-i) doesn't install to to both mirrors of a raid1 array. I remember that you can ask it to install to both mirrors but it's convoluted. IIRC, you have to refuse to install grub to the MBR and you then get a choice of disks and partitions to install to. -- 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/CAOdo=swk2rmr8uv7ppgiwyywk9rec-okftdr4yjfuhk3xny...@mail.gmail.com
