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Re: Filestreams (and 64bit inodes)

To: Eric Sandeen <sandeen@xxxxxxxxxxx>
Subject: Re: Filestreams (and 64bit inodes)
From: Greg Banks <gnb@xxxxxxxxxxxxxxxxx>
Date: Fri, 13 Jun 2008 11:28:18 +1000
Cc: Timothy Shimmin <tes@xxxxxxx>, Richard Scobie <richard@xxxxxxxxxxx>, xfs@xxxxxxxxxxx
In-reply-to: <48512A34.1020604@xxxxxxxxxxx>
Organization: File Serving Technologies ; Silicon Graphics Inc.
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Eric Sandeen wrote:
> Eric Sandeen wrote:
>> Timothy Shimmin wrote:
>>> (1) It would be nice to know what the state of the apps really are.
>>> There is also the question of interaction with CXFS and NFS.
>>> Greg Banks has a compat matrix for NFS. It looks like the main
>>> things is to get something half recent - linux 2.6, nfs v3,
>>> apps which use 64 bit sys calls (eg. stat64) etc...
>>> Would need to do investigating.
>> Greg has a tool to scan binaries... some day I'm going to run it over
>> the fedora universe, I'll get back to you...  someday.
> someday didn't take too long :) 
Cool, thanks for the data Eric.

>  but it ain't pretty.
> I installed all fedora packages under a directory and ran greg's tool over:
> /sbin /usr/sbin /bin /usr/bin /usr/kerberos/bin/ /usr/kerberos/sbin/
> Aggregate results:
>    4070 29.1% are scripts (shell, perl, whatever)
>    6598 47.2% don't use any stat() family calls at all
>    1829 13.1% use 32-bit stat() family interfaces only
>    1312  9.4% use 64-bit stat64() family interfaces only
>     180  1.3% use both 32-bit and 64-bit stat() family interfaces
Ouch.  That's over two thousand executables to patch, rebuild, and ship.
> list of packages, sorted by the semi-lame "number of files in package
> which call a 32-bit stat variant" metric:
> http://sandeen.fedorapeople.org/stat32-ers
> I'm going to see if I can't leverage Fedora to clean some of this up.
> -Eric
Good luck with that.

Greg Banks, P.Engineer, SGI Australian Software Group.
The cake is *not* a lie.
I don't speak for SGI.

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