On Sun, May 24, 2020 at 9:35 PM Justin Engwer <justin@xxxxxxxxxxx> wrote: > > Hi, I'm the guy who lost all his VMs due to a massive configuration oversight. > > I'm looking to implement the remaining 4 x 3tb drives into a new fs > and just want someone to look over things. I'm intending to use them > for backup storage (veeam). > > Centos 7 Kernel 5.5.2-1.el7.elrepo.x86_64 > btrfs-progs v4.9.1 > > mkfs.btrfs -m raid1c4 -d raid1 /dev/disk/by-id/ata-ST3000*-part1 > echo "UUID=whatever /mnt/btrfs/ btrfs defaults,space_cache=v2 0 2" >> /etc/fstab > mount /mnt/btrfs > > RAID1 over 4 disks and RAID1C4 metadata. Mounting with space_cache=v2. > Any other mount switches or btrfs creation switches I should be aware > of? Should I consider RAID5/6 instead? 6tb should be sufficient, so > it's not like I'd get anything out of RAID5, but RAID6 I suppose could > provide a little more safety in the case of multiple drive failures at > once. > In general, this looks fine, but I'd suggest that you switch to CentOS 8. There's a COPR for btrfs-progs for EL8 that's keeps in sync with Fedora: https://copr.fedorainfracloud.org/coprs/ngompa/btrfs-progs-el8/ For CentOS 8, you should continue to plan to use ELRepo.org kernels. :) -- 真実はいつも一つ！/ Always, there's only one truth!
