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