On Sun, 26 Jul 2015 15:14:46 +0100, Peter Humphrey wrote: > Actually I did have a bit of a fling with btrfs at that time, but I > couldn't understand what the docs were telling me. I must have had a > comprehension gap or something, but in the end I just went back to what > I knew and reinstalled from backups. The BIOS is still in the MBR era > anyway. > > Not wishing to hijack the thread,
Too late :) > but out of interest, what would you > recommend for this box with its old BIOS, and two SSDs with LVM2 > volumes? At present I have this fstab: > > /dev/md1 /boot ext2 relatime,noauto 1 2 > /dev/md5 / ext4 relatime,discard 1 1 > /dev/vg7/home /home ext4 relatime,discard 1 2 > /dev/vg7/common /home/prh/common ext4 relatime,discard 1 3 > /dev/vg7/boinc /home/prh/boinc ext4 relatime,discard 1 3 > /dev/vg7/virt /home/prh/.VirtualBox ext4 relatime,discard 1 3 > /dev/vg7/var /var ext4 relatime,discard 1 2 > /dev/vg7/portage /usr/portage ext4 relatime,discard 1 3 > /dev/vg7/packages /usr/portage/packages ext4 relatime,discard 1 2 > /dev/vg7/distfiles /usr/portage/distfiles ext4 relatime,discard 1 2 > /dev/vg7/local /usr/local ext4 relatime,discard 1 2 > /dev/vg7/tmp /tmp ext2 > relatime,nosuid,nodev,noexec 1 > 2 /dev/vg7/vartmp /var/tmp/ ext4 > relatime,discard,nosuid,nodev 1 2 > > I've omitted quite a few other partitions that don't bear on my > question. /dev/vg7 is on /dev/md7. Are the 2 SSDs in a RAID? If so, I'd give btrfs RAID a try, you just need to get your hear round the concepts of volumes and sub-volumes. Before using btrfs for real, I created a couple of loopback disk files to play around with the options. You couuld probably switch over with minimal downtime by failing one of the SSDs and removing it from the RAID. Create a single device btrfs filesystem on it and copy the data over. Once you are happy with it, add the other disk and convert to RAID1. -- Neil Bothwick "I'm Not Sure If I'm Homosexual", Said Tom, Half In Earnest.
