Subject: Re: [vserver] PEBKACs I can't see with quotas and (unrelated) vserver init PID
From: Herbert Poetzl <herbert@13thfloor.at>
Date: Thu, 29 Jul 2010 02:08:42 +0200

On Wed, Jul 28, 2010 at 04:02:32PM +0200, Grzegorz Nosek wrote:
> 2010/7/28 Remigiusz Modrzejewski <lrem@sphere.pl>:
> > Is xfs well supported with linux-vserver now? Last time I checked this mixture was
discouraged.
> 
> Well, I'm not using any vserver-specific features (cow links, disk
> limits, xid tagging, possibly something else I missed). The only
> nonstandard item in the stack is the vroot device, which had an
> episode of missing a large chunk of its patch but AFAIK it's been
> restored since then.

I remember that xfs has 'special' quota ioctls different
from the 'normal' quota ioctls, but I'm not sure this
is still true (or even was true :) as I haven't looked
at xfs for some time now ....

> It's been working in production for several years now without causing
> any problems related to the vserver patch.

it is supported as filesystem, but we have not really
checked anything quota wise except for ext2/3/4 for
ages, so it might work, but I'm not surprised if it
doesn't ...

in any case, strace -fF should give some insight what
ioctl (or syscall) fails with EPERM ...

best,
Herbert

> Best regards,
>  Grzegorz Nosek