On: Linux 5.10 BTRFS performance regression

[bluedino]

Synology has been using BTRFS for a while, I haven't had any issues with it.

https://www.synology.com/en-global/dsm/Btrfs

[enz → bluedino]

It's interesting to compare with QNAP, a competitor of Synology, that does not use Btrfs (they stick to ext4 with mdadm) and they explained why: https://www.qnap.com/solution/qnap-ext4/en/

However, I am really not sure if the facts they provide are still relevant today. Like always with commercial documents, that must be taken with a grain of salt.

[hda111 → bluedino]

They use it just as a filesystem, like ext4. The RAID is still the classic Linux RAID because btrfs RAID isn't stable.

This means BTRFS isn't able to heal itself because there is no copy of the data that BTRFS could use.

I built my own NAS so I can just use ZFS with raidz, and when I ever have a silent data corruption the repair is done in a few seconds, not hours.

[ksec → bluedino]

Unfortunately not available on every model.