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Not proxmox-specific, but I've been using btrfs on my servers and laptops for the past 6 years with zero issues. The only times it's bugged out is due to bad hardware, and having the filesystem shouting at me to make me aware of that was fantastic.
The only place I don't use zfs is for my nas data drives (since I want raidz2, and btrfs raid5 is hella shady) but the nas rootfs is btrfs.
If it didn't give you problems, go for it. I've run it for years and never had issues either.
Meh. I run proxmox and other boot drives on ext4, data drives on xfs. I don't have any need for additional features in btrfs. Shrinking would be nice, so maybe someday I'll use ext4 for data too.
I started with zfs instead of RAID, but I found I spent way too much time trying to manage RAM and tuning it, whereas I could just configure RAID 10 once and be done with it. The performance differences are insignificant, since most of the work it does happens in the background.
You can benchmark them if you care about performance. You can find plenty of discussion by googling "ext vs xfs vs btrfs" or whichever ones you're considering. They haven't changed that much in the past few years.
but I found I spent way too much time trying to manage RAM and tuning it,
I spent none, and it works fine. what was you're issue?
I have four 6tb data drives and 32gb of RAM. When I set them up with zfs, it claimed quite a few gb of RAM for its cache. I tried allocating some of the other NVMe drive as cache, and tried to reduce RAM usage to reasonable levels, but like I said, I found that I was spending a lot of time fiddling instead of just configuring RAID and have it running just fine in much less time.
Proxmox only supports btrfs or ZFS for raid
Or at least that's what I thought
Btrfs only has issues with raid 5. Works well for raid 1 and 0. No reason to change if it works for you
It is stable with raid 0,1 and 10.
Raid 5 and 6 are dangerous
Using it here. Love the flexibility and features.
I run it now because I wanted to try it. I haven't had any issues. A friend recommended it as a stable option.
Do you rely on snapshotting and journaling? If so backup your snapshots.
Why?
I already take backups but I'm curious if you have had any serious issues