Using it here. Love the flexibility and features.
this post was submitted on 23 Nov 2024
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Btrfs only has issues with raid 5. Works well for raid 1 and 0. No reason to change if it works for you
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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.
Proxmox only supports btrfs or ZFS for raid
Or at least that's what I thought
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(4 replies)
I am using btrfs on raid1 for a few years now and no major issue.
It's a bit annoying that a system with a degraded raid doesn't boot up without manual intervention though.
Also, not sure why but I recently broke a system installation on btrfs by taking out the drive and accessing it (and writing to it) from another PC via an USB adapter. But I guess that is not a common scenario.
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btrfs raid subsystem hasn't been fixed and is still buggy, and does weird shit on scrubs. But fill your boots, it's your data.
For my jbod array, I use ext4 on gpt partitions. Fast efficient mature.
For anything else I use ext4 on lvm thinpools.
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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
Are you backing up files from the FS or sre you backing up the snapshots? I had a corrupted journal from a power outage that borked my install. Could not get to the snapshots on boot. Booted into a live disk and recovered the snapshot that way. Would've taken hours to restore from a standard backup, however it was minutes restoring the snapshot.
If you're not backing up BTRFS snapshots and just backing up files you're better off just using ext4.