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Re: [PATCH] enable inode64 by default when possible

To: Emmanuel Florac <eflorac@xxxxxxxxxxxxxx>
Subject: Re: [PATCH] enable inode64 by default when possible
From: Eric Sandeen <sandeen@xxxxxxxxxxx>
Date: Wed, 10 Feb 2010 14:15:21 -0600
Cc: xfs@xxxxxxxxxxx
In-reply-to: <20100210210448.36f16aba@xxxxxxxxxxxxxx>
References: <4B7309D7.5090800@xxxxxxxxxxx> <20100210210448.36f16aba@xxxxxxxxxxxxxx>
User-agent: Thunderbird (Macintosh/20090812)
Emmanuel Florac wrote:
> Le Wed, 10 Feb 2010 13:32:39 -0600 vous écriviez:
>> As such, this patch changes the default to inode64 whenever
>> XFS_BIG_INUMS is set, which in turn depends on either
>> CONFIG_LBDAF or 64-bit longs.
> But doesn't it cause problems specially for NFS sharing ?

For some clients, yes - as do other NFS servers.

That's what noinode64 is for...

Also, newer nfs clients have an option:

                        [NFS] enable 64-bit inode numbers.
                        If zero, the NFS client will fake up a 32-bit inode
                        number for the readdir() and stat() syscalls instead
                        of returning the full 64-bit number.
                        The default is to return 64-bit inode numbers.

(see Documentation/kernel-parameters.txt)

At some point we have to drag people kicking and screaming
out of 1988, I think! :)

(I am mindful that this may manifest itself as "xfs is incompatible"
but if we document this and advertise it a bit, I hope we can avoid
that.  At some point, apps just need to be fixed.)


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