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Re: [PATCH 1/2] xfs_quota: allow operation on foreign filesystem types

To: Eric Sandeen <sandeen@xxxxxxxxxxx>
Subject: Re: [PATCH 1/2] xfs_quota: allow operation on foreign filesystem types
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Fri, 5 Feb 2016 16:40:36 +1100
Cc: xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <56B432CB.5080709@xxxxxxxxxxx>
References: <1454627718-19583-1-git-send-email-david@xxxxxxxxxxxxx> <1454627718-19583-2-git-send-email-david@xxxxxxxxxxxxx> <56B3E6F3.802@xxxxxxxxxxx> <56B432CB.5080709@xxxxxxxxxxx>
User-agent: Mutt/1.5.21 (2010-09-15)
On Thu, Feb 04, 2016 at 11:27:39PM -0600, Eric Sandeen wrote:
> 
> 
> On 2/4/16 6:04 PM, Eric Sandeen wrote:
> > Looks ok, but now with the new option:
> > 
> > 1) needs a manpage update
> > 2) usage() should be updated to include -f
> 
> So, I haven't quite worked out what this *is* doing, but on further 
> reflection,
> it seems like "-f" should definitely relate to behavior which iterates over
> all filesystems.  i.e. without -f, non-xfs filesystems are skipped; with -f,
> "foreign" filesystems are included.  That was my main concern.
> 
> But if an xfs_quota command is pointed directly at a non-xfs filesystem,
> I'm not sure what's best.  Assume the user intended it, and operate on
> that fs w/o needing -f?  Or require "-f" for consistency?  What do you think?
> 
> And, we can specify multiple mount points to operate on, i.e.
> 
> xfs_quota -c "foo" /mnt/ext4 /mnt/xfs
> 
> so ... I guess I don't know if that should require -f or not.  principle of
> least surprise?  Keep old behavior of ignoring the non-xfs mount?

I think we start with requiring "-f", and if people then complain
that it's too cumbersome, we remove it and just autodetect.

Cheers,

Dave.
-- 
Dave Chinner
david@xxxxxxxxxxxxx

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