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Re: Experiences with BTRFS -- is it mature enough for enterprise use?




The reason Redhat dropped btrfs support is because it currently has no native cryptographic function. And from the various threads I've read on the topic there is no easy answer to the problem.

On 1 January 2018 at 06:44, Sven Hartge <sven@xxxxxxxxxxxxx> wrote:
David Christensen <dpchrist@xxxxxxxxxxxxxxxx> wrote:
> On 12/30/17 14:38, Matthew Crews wrote:

>> The main issue I see with using BTRFS with MDADM is that you lose the
>> benefit of bit-rot repair. MDADM can't correct bit rot, but
>> BTRFS-Raid (and ZFS raid arrays) can, but only with native raid
>> configurations.

> AFAIK:

> 1.  mdadm RAID1 can fix bit rot, so long as one drive has a good block
> to fix the others.

Yes, but it can't fix silent bit-rot, where incorrect bytes are read
from the drive without the drive noticing. In that case the Kernel has
no way of knowing which bytes are the correct ones, you need some sort
of checksum for that.

Grüße,
Sven.

--
Sigmentation fault. Core dumped.