[CentOS] mounting filesystems with blocks larger then 4k over aloop device

Ruslan Sivak rsivak at istandfor.com
Tue Nov 13 13:23:42 UTC 2007

Flaherty, Patrick wrote:
>> mount: Function not implemented
>> looking at dmesg I get:
>> XFS: Attempted to mount file system with blocksize 8192 bytes
>> XFS: Only page-sized (4096) or less blocksizes currently work.
>> XFS: SB validate failed
>> I had similar issues with reiserFS.  Is there a way to get a 
>> filesystem with larger then 4k blocks in CentOS 5?
> maybe you need to specify block size (bs= see the mount manpage) when
> mounting or...
> the man page says it can only be as big as pagesize. Check your page
> size `$ getconf PAGE_SIZE`, maybe that's the problem. 
> See also: http://lwn.net/Articles/249169/
> http://www.uwsg.iu.edu/hypermail/linux/kernel/0706.2/1960.html: Commit
> seems to show after linux-2.6.22 you should be able to ignore page size
> when mounting XFS volumes.
> Good luck
> Patrick
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The page size is currently 4k.  I'm running "Linux 
domU-12-31-36-00-51-72 2.6.16-xenU #1 SMP Mon May 28 03:41:49 SAST 2007 
i686 athlon i386 GNU/Linux".  I there a 2.6.22 or later kernel available?


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