| jadoba on 16 May 2008 02:39:18 -0700 |
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On Fri, May 16, 2008 at 02:20:34AM -0400, JP Vossen wrote: <snip> > As for RAID1 + LVM, this is what I came up with, any comments? > > Partition Method: manual > Create 256M /boot (label boot0) on first disk > Create 256M /boot1 (label boot1) on second disk > Use the rest of each disk for "physical volume for RAID" > Configure Software Raid > Yes, then "Create MD devices" > RAID1, then follow prompts > RAID1 device > Use all space as "physical volume for LVM" > Configure the LVM > Create volume group, name = hostname > Create logical volume > swap_1 512M > root rest of space - e.g., 2G > (to leave some space free for snapshots!) > LVM VG hostname, LV root > Mount as ext3 /root, label = root > LVM VG hostname, LV swap_1 > Use as swap area > > 256M for /boot is way overkill, but since it's non-LVM and disk is cheap... > > I'm still pretty sure you need to leave /boot out of the LVM and mirror, > can anyone prove me wrong? So if I do that, I also need to manually > keep /boot in sync on the 2 disks, later manually install grub on the > second disk, and if the first disk dies, I'd need to edit something in > the grub config while attempting to boot from the second disk. Correct? > Per above I'd label the second disk's /boot as boot1 so in theory if > grub is using labels, a tweak from ""boot" to "boot1" should do it? > If possible with the Ubuntu installer, configure two RAID arrays, one solely for /boot and the other for LVM - makes a hell of a difference compared to 'dd if=/dev/sda1 of=/dev/sdb1' after every kernel upgrade or initramfs change. That sounds barbaric, kinda like what I do with my USB /boot partition (I go through a lot to have an encrypted laptop :) Never tried that many layers of complexity (RAID1, then Encryption, then LVM) but try it, I doubt that it will fail. As long as /boot is not encrypted it should pretty much just work! -- James Barrett Attachment:
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