when your RAID degrade with BTRFS in Syno NASes

[jeyare]

jeyare submitted a new resource:

when your RAID degrade with BTRFS in Syno NASes - Concern and solution for degraded RAID with BTRFS

One of my concern was about - What would happen when my RAID contains BTRFS will degrade?

Analyze
I found in official BTRFS Wiki these recommendations:
RAID1 volumes - if they become degraded may only be mounted read-write once with the options -o degraded,rw.
Notes:
This does not happen (reportedly) when there are more than 2 devices.
This is often due to the "Incomplete chunk conversion" issue, where there are single...

Read more about this resource...

 

[Telos]

Thx gents from Syno, for such useful solution

While much of this goes beyond my comprehension, I have weak faith in Synology programming to offer improved solutions. Their "good enough" approach to software development speaks loudly to me. I hope your optimism is well-placed, for all of our sakes.

 

[jeyare]

I will wait for first RAID degrade and I will write an experience here

 

[scoobs]

There is a decent write up here with regards to Synology and testing of degraded RAID.

I couldn't break Synology SHR+btrfs (yet) | Dalton Durst

Lately I’ve been hitting the limits of the little ARM processor and 512MB of RAM in my Synology DS218j server, so I purchased a DS1019+. This is one of Synology’s higher-end models, with five disk bays by default and support for adding more. It also includes one feature that they advertise at...

daltondur.st

 

[jeyare]

thx @scoobs for the valuable link
seems to be - Dalton is another "schizophrenic" soul with scientific approach
the author was contacted to join us