[CentOS] unsupported sector size 4096 on /dev/sda

Rene Salmon rsalmon at tulane.edu
Tue Sep 19 17:38:12 UTC 2006

Hi list,

I just received a storage array and created a 3TB LUN with a 
block/sector size on the disks of 4096.  When I boot the our centos-4.4 
box attached to this array I get the "unsupported sector size 4096" message:

Remounting root filesystem in read-write mode:  [  OK  ]
ERROR: unsupported sector size 4096 on /dev/sda.
No RAID disks
Setting up Logical Volume Management: [  OK  ]
Checking filesystems
Checking all file systems.
[/sbin/fsck.ext3 (1) -- /scratch] fsck.ext3 -a /dev/hdb1
/scratch: clean, 90/14663680 files, 485450/29304560 blocks
[  OK  ]
Mounting local filesystems:  [  OK  ]

Any ideas as to why centos does not like the 4096 sector size on 
/dev/sda?  What are the supported sector/block sizes in centos on 
disks/LUNs?  Eventually I will be creating an LVM and ext3 file system 
on this. Any one know what the file system size limits on LVM/ext3 are?

Thanks in advance for any help on this.


         Rene Salmon
         Tulane University
         Center for Computational Science
	rsalmon at tulane.edu
         Tel 504-862-8393
	Tel 504-988-8552
         Fax 504-862-8392

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