On 10/5/25 3:08 AM, Javier Perez wrote:
Hi.
George N. White III wrote in a post something that resonated with me.
A lot of effort has gone towards improving the default
configuration, (but
now new problems for users who don't do btrfs maintenance and end up
with
broken filesystems). It is assumed that users going outside the
defaults
Is there any link, tutorial, etc that explains what kind of btrfs
maintenance we are supposed to be doing?
Long time btrfs user and have never knowingly performed any maintenance
on my btrfs filesystem except balancing after converting from single HDD
to raid 1 my system.
I wonder what I have been missing (ignorance is bliss :( )
There's nothing you need to do. If you're using the RAID functions of
btrfs, then a regular scrub could be a good idea, just like mdraid does.
I guess even if it's a single drive, a scrub would be useful to detect
data corruption issues early, although you wouldn't be able to recover
the damaged data. But that's an extra thing that's enabled by the
filesystem feature of checksumming. It's not a necessary thing.
Personally, I do RAID at the block level with mdraid. I haven't seen
the benefit of doing it in the filesystem. But now, I see that btrfs
RAID could possibly protect against certain rare types of data corruption.
--
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