ZFS On Linux

[Petter Adsen]

On Tue, 31 Mar 2015 08:33:55 -0600
"compdoc" <compdoc at hotrodpc.com> wrote:

> > Has anyone here got any experience with ZFS On Linux? I need to 
> >occasionally mount, read and write a disk that will primarily be in a
> FreeBSD system.
> 
> 
> I use ZOL on Ubuntu Server and it works very well, however, I use it
> for several large raidz2 arrays and one mirror. I'm not sure it has
> an advantage used on a single disk. 

I will, eventually, add more disks, but for now I just need to make
sure that the disks can be read on a Linux system. From what little I
know, FreeBSD seems to have some support for ext-filesystems, but that
would probably not be ideal as they would primarily be in a BSD
machine. As a start I could use ufs, which Linux also supports, but at
some point I am going to need ZFS features.

An alternative could possibly be to add an extra disk just for
transferring data and format it with ufs, but that would be cumbersome
and cost money. And eat up a valuable SATA port.

> FreeBSD file systems do seem a bit strange, and I'm not sure a
> FreeBSD drive can be mounted on an Ubuntu system. (haven't had the
> need to try very often)

I don't know either, but I believe the BSD's use disklabels like
Solaris, so I guess I'll just have to try it with some non-important
data.

> So, ZOL might be an alternative, but it might not be seamless. You
> might have to issue zfs commands to import or mount the drive each
> time you attach it.

That wouldn't be a problem.

> Hopefully, others on the list have more experience. 

Yes, if anyone knows if the disk formats are compatible, and if disks
with ZFS can be reliably interchanged between BSD and Linux systems, I'd
be very interested to know. Maybe there is a ZOL mailing-list I can ask,
I'll check this out.

Thanks for your answer, though.

Petter

-- 
"I'm ionized"
"Are you sure?"
"I'm positive."
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