[Linux-cluster] gfs2 doc and performance question

Alexandre Racine Alexandre.Racine at mhicc.org
Wed Aug 15 16:31:45 UTC 2007

I don't know the answer to all your questions, but the blocksize is the first option in the man page of gfs_mkfs

# man gfs_mkfs

       gfs_mkfs is used to create a Global File System.

       -b BlockSize
              Set  the  filesystem block size to BlockSize (must be a power of two).  The minimum block size
              is 512.  The FS block size cannot exceed the machine's memory page size.  On the  most  archi-
              tectures  (i386, x86_64, s390, s390x), the memory page size is 4096 bytes.  On other architec-
              tures it may be bigger.  The default block size is 4096 bytes.  In  general,  GFS  filesystems
              should not deviate from the default value.

Alexandre Racine
Projets spéciaux
514-461-1300 poste 3304
alexandre.racine at mhicc.org

-----Original Message-----
From: linux-cluster-bounces at redhat.com on behalf of Mahmoud Hanafi
Sent: Tue 2007-08-14 22:54
To: linux clustering
Subject: [Linux-cluster] gfs2 doc and performance question
I been trying to find documentation on gfs2. but it seem that there isn't 

Is there any detail documentation on gfs2?
Can one set the block size when creating gfs2 filesystem?
Has there been any performance benchmark of gfs2?

Mahmoud Hanafi
Sr. System Administrator
Bld. 676
2435 Fifth Street
WPAFB, Ohio 45433
(937) 255-1536

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