XFS on Fedora i686, armv7hl

[Orion Poplawski]

On 02/27/2014 12:38 PM, Chris Murphy wrote:
> 
> On Feb 27, 2014, at 8:06 AM, Eric Sandeen <sandeen at sandeen.net> wrote:
> 
>> On 2/26/14, 11:37 PM, Chris Murphy wrote:
>>> Hi,
>>>
>>> Fedora is considering XFS as their default file system. They support
>>> three primary architectures: x86_64, i686, and armv7hl.  Do XFS devs
>>> have any reservations about XFS as a default file system on either
>>> i686, or arm?
>>
>> As Dave said, we rely on others to do ARM testing for the most part,
>> though I've certainly jumped in and debugged some issues from time
>> to time.
>>
>> It'd be super if Fedora could run the xfstests test suite on arm
>> as part of QE.  I'd be more than happy to help get that started
>> if people are interested.
> 
> I don't know that Fedora QA has the resources to do this, but I'll cc the Fedora test@ (QA) arm@ lists. If these are highly automatable tests it might be possible, if they have the hardware. More likely I think it's that we need some ARM community folks to look at splitting up some of this work.
> 
> I'm not sure yet what concerns the ARM group might have with XFS either as this hasn't been decided, but the Fedora Server product working group is slightly leaning toward XFS by default. Performance and CPU hit wise on x86_64, XFS seems to match up well with ext4 and maybe even a bit better ratio of throughput/CPUtime for booting workload (systemd is parallel!) so if were the same on ARM XFS could work out slightly better for them.
> 
> 
> Chris Murphy
> 

I'm sure many people have much better info on this - but back in the
day, running XFS on LVM (on md?) on i686 was not a good idea due to
issues running out of stack space.  I don't know if this has changed in
any way, or if arm is better in this regard.  But that would be my
concern.  I think RHEL6 doesn't support xfs on i686, and RHEL7 has
dropped i686 completely it seems.

-- 
Orion Poplawski
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