Re: Large Filesystem

On 14 Nov at 16:49, Johan Huldtgren <johan+openbsd-misc@huldtgren.com> wrote:
> hello,
>
> On 2020-11-14 13:50, Mischa wrote:
> > Hi All,
> >
> > I am currently in the process of building a large filesystem with
> > 12 x 6TB 3.5" SAS in raid6, effectively ~55TB of storage, to serve as a
> > central, mostly download, platform with around 100 concurrent
> > connections.
> >
> > The current system is running FreeBSD with ZFS and I would like to
> > see if it's possible on OpenBSD, as it's one of the last two systems
> > on FreeBSD left. :)
> >
> > Has anybody build a large filesystem using FFS2? Is it a good idea?
> > How does it perform? What are good tests to run?
> >
> > Your help and suggestions are really appriciated!
>
> I have a filesystem about that size on my home file server, (5 x 14TB SAS
> in raid5 plus a hot spare) the drives are connected to a RAID card, but
> then it's just FFS2 on it. It runs reasonably well for home use. Not
> spectacular but not so that anyone has any complaints. fsck does take
> quite some time to run, but this filesystem was created quite a long time
> ago with the then default settings.
>
> $ dmesg | grep LSI
> mfi0: "LSI MegaRAID SAS 9260-8i", firmware 12.15.0-0239, 512MB cache
> sd0 at scsibus1 targ 0 lun 0: <LSI, MR9260-8i, 2.13> naa.
>
> $ df -h /mnt
> Filesystem Size Used Avail Capacity Mounted on
> /dev/sd0a 50.5T 14.6T 33.4T 30% /mnt

Great to hear! Will give it a go and see how it behaves.

Mischa