Re: 2 PB filesystem ok?

Johannes Thumshirn
2024-04-29T12:35:41Z

On 29.04.24 01:41, Ulli Horlacher wrote:
>
> We are planing to use a Seagate Exos Corvault System with 2 PB as the
> storage backend for restic backup. It has some hundreds hard disks and
> exports them as a single virtual disk (via SAS). Linux sees only a big
> SCSI disk. This special RAID is all in hardware, no need for BTRFS
> software RAID.
>
> So far my biggest btrfs filesystems have only about 100 TB.
>
> Is 2 PB ok for one btrfs filesystem?
>
>

I have used 2PB filesystems in my RAID Stripe Tree test environment, but
for practical uses, I suggest you to enable the block-group tree feature
during mkfs time.

This stores block-group items in a separate tree instead of the extent
tree, drastically improving mount times on huge FSes.