>>>>> "Wols" == Wols Lists <antlists@xxxxxxxxxxxxxxx> writes: > On 24/11/2022 21:10, David T-G wrote: >> I don't want to try BtrFS. That's another area where I have no experience, >> but from what I've seen and read I really don't want to go there yet. > Btrfs ... > It's a good idea, and provided you don't do anything esoteric it's > been solid for years. Does it count when you try to upgrade SLES 12.3 with the latest patches to 15 and it bombs so badly that the btrfs snapshots can't get you working again and you have to blow the system away to do a fresh full re-install? I don't trust btrfs because when (not if) it goes badly, it goes REALLY badly in my experience. Where ext4 and xfs both will recover enough to keep working. You might lose data, but you won't lose the entire filesystem. > It used to have a terrible reputation for surviving a disk full - at > a guess it needs some disk space to shuffle its btree to recover > space - and a disk-full situation borked the garbage collection. It can't handle snapshots well either in my experience. > Raid-1 (mirroring) by default only mirrors the directories, the data > isn't mirrored so you can easily still lose that ... (they call that > user misconfiguration, I call it developer arrogance ...) I call it a failure of the layering model. If you want RAID, use MD. If you want logical volumes, then put LVM on top. Then put filesystems into logical volumes. So much simpler... > Parity raid is still borken... So why the hell are you recommending it? > At the end of the day, if you want to protect your data, DON'T rely on > the filesystem. There are far too many cases where the developers have > made decisions that protect the file system (and hence computer uptime) > at the expense of the data IN the filesystem. I don't give a monkeys if > the filesystem protects itself to enable a crashed computer to reboot > ten seconds faster, if the consequence of that change is my computer is > out of action for a day while I have to restore a backup to re-instate > the integrity of my data !!! Yes, I agree 100%. Mirrors and backups are key. And offsite backups are key too. Especially for family photos and other keep sakes you don't want to lose. rips of CDs and DVDs aren't nearly as important in my book.
