BCacheFS in Proxmox VE

msproact

Active Member
Nov 12, 2019
34
5
28
Nürnberg
www.proact.eu
I know it is to early to make any plans, way to early even. However just being curious:

Any preliminary thoughts regarding using BCacheFS in Proxmox VE? If not that is also okay of course.

My current thought is: Once it is marked as stable in the kernel instead of experimental and found to be stable enough during testing it might be a good alternative to BTRFS in case it delivers on the promises. Yeah, a lot of conditions in there. :)

BTW I am using BTRFS with a test setup, an Intel NUC with SATA SSD, for way more than a year. It basically works okay and most importantly is stable. Subjective feeling is that it was a bit faster with qcow2 files on XFS back then, but I do not have any objective figures for comparison. And with BTRFS I have scrubbing for example. Granted I neither use RAID with BTRFS and only use snapshotting during alternate traditional rsync backup which likely would not be needed anymore since I also do host backups with proxmox backup client.

My hope would be that BCacheFS can deliver regarding some of the known performance deficiencies with BTRFS. And of course it can use SSD as a cache which AFAIK is still not implemented in mainline kernel for BTRFS.
 

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