PE 2650 as a file server

Henrik Beckman henrik.beckman at sgu.se
Wed Oct 23 09:15:00 CDT 2002


Go ahead =)

The main site about xfs is
http://oss.sgi.com/projects/xfs/

Also
http://www-106.ibm.com/developerworks/
search for xfs under linux and you will find some interesting articles 
about filesystems.


/Henrik



John C wrote:

>I should have posted the link instead.....  I lost it though.....  I just
>found it on Google though.
>
>John
>
>-----Original Message-----
>From: linux-poweredge-admin at dell.com
>[mailto:linux-poweredge-admin at dell.com]On Behalf Of Fabien Combernous
>Sent: Wednesday, October 23, 2002 4:11 AM
>To: John C
>Cc: darren; Dell Linux
>Subject: Re: PE 2650 as a file server
>
>
>Where are comments (1) (2) and (3) ?
>
>John C wrote:
>
>>You really ought to just read about the various file systems.  IBM.com
>>had good writeups of all of them.
>>
>>Looks like XFS can store data within an inode on small files, which is
>>
>good.
>
>>Here is a chart I found on the net though.
>>
>>Techniques/file system
>>
>>free blocks management
>>
>>Extents for free space
>>
>>Btrees for directory entries
>>
>>Btrees for file's blocks addressing
>>
>>Extents for file's blocks addressing
>>
>>Data within inode
>>(small files)
>>
>>Symbolic links data within the i-node
>>
>>Directory entries within  i-node (small directories)
>>
>>XFS
>>
>>B+Trees, indexed by offset and indexed by size
>>
>>YES
>>
>>YES
>>
>>YES
>>
>>YES
>>
>>YES
>>
>>YES
>>
>>YES
>>
>>JFS
>>
>>Tree + Binary Buddy. *(1)
>>
>>NO
>>
>>YES
>>
>>YES
>>
>>YES
>>
>>NO
>>
>>YES
>>
>>Up to 8
>>
>>ReiserFS *(2)
>>
>>Bitmap based
>>
>>Not supported yet
>>
>>As a subtree of the main fs tree
>>
>>Within the file system main tree
>>
>>To come with release 4
>>
>>*(3)
>>
>>*(3)
>>
>>*(3)
>>
>>Ext3fs
>>
>>Ext3fs isn't a file system designed from scratch; it lies over ext2fs,
>>so it doesn't support any of the techniques above. The point is that
>>Ext3fs provides ext2fs with journaling support, while preserving
>>backwards compatibility.
>>
>>
>>
>>
>>-----Original Message-----
>>From: darren [mailto:teodarren at myrealbox.com]
>>Sent: Tuesday, October 22, 2002 12:08 AM
>>To: 'John C'
>>Subject: RE: PE 2650 as a file server
>>
>>
>>Hi john,
>>
>>Thanx for the reply.
>>
>>IS the performance for XFS close to that of reiser for large number
>>(100,000 to 300,000) in s single directory?
>>
>>-----Original Message-----
>>From: linux-poweredge-admin at dell.com
>>[mailto:linux-poweredge-admin at dell.com] On Behalf Of John C
>>Sent: Tuesday, October 22, 2002 10:34 PM
>>To: Henrik Beckman; Linux-PowerEdge at dell.com
>>Subject: RE: PE 2650 as a file server
>>
>>I've also had great luck with XFS.  As you said though, it's more tuned
>>for
>>larger files.
>>
>>John
>>
>>-----Original Message-----
>>From: linux-poweredge-admin at dell.com
>>[mailto:linux-poweredge-admin at dell.com]On Behalf Of Henrik Beckman
>>Sent: Tuesday, October 22, 2002 3:28 AM
>>To: Linux-PowerEdge at dell.com
>>Subject: Re: PE 2650 as a file server
>>
>>
>>
>>I would consider xfs, unless it will be tons of small files..
>>I have one fileserver here with xfs serving data over nfs and samba,
>>solid and fast.
>>
>>/Henrik
>>
>>bscott at ntisys.com wrote:
>>
>> >On Mon, 21 Oct 2002, at 9:46am, jcouncilman at knology.net wrote:
>> >
>> >>You might want to look into the problems that ResiserFS has had with
>>NFS.
>> >>
>> >
>> >  My understanding is that those problems have long been fixed.  Like
>>most
>> >things Linux, early versions of ReiserFS were not always compatible
>>with
>> >other features of the kernel.  However, we do not use NFS+ReiserFS, so
>>this
>> >is based entirely on what I have heard from others.
>> >
>> >  We choose ReiserFS because our customer needed good performance with
>>many
>> >files in a single directory, and ReiserFS is the only practical option
>>which
>> >provides that on kernel 2.2 (which was the only stable option at the
>>time).
>> >
>> >  More information can be found at <http://www.namesys.com>.  There is
>>also
>> >a mailing list.
>> >
>>
>>
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>>
>
>--
>
>Fabien COMBERNOUS - IT Engineer
>eProcess - Parc Club du Millénaire Batiment n° 6
>1025 rue Henri Becquerel - 34000 Montpellier FRANCE
>http://www.eprocess.fr - +33 (0)4 67 13 84 50
>
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>
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