[Beowulf] Problem with ext3 filesystem?

Jin, Yao jinyao at ymail.com
Thu Feb 12 20:58:54 PST 2009


On Fri, Feb 13, 2009 at 12:16 AM, Joe Landman <
landman at scalableinformatics.com> wrote:

> Jin, Yao wrote:
>
>> Ten 1TB disks make up of a RAID-5 volume.
>> My OS is rockslinux 5.0(based on centos 5.1), only ext3 is available
>> during installation.
>> This volumn is partitioned as one single ext3 filesystem.
>>
>> On the first reboot after installation , the error occurs:
>> The filesystem size is 1952447718 blocks
>> Physical size is 341834982 bloks.
>> The filesystem is corrupted.
>>
>> I find that filesystem size is in agreement with actual capacity(
>> 1952447718*4Kb = 7.27TB).
>>
>> The partition can be mounted manually after entering system. But I can't
>> stop worring  about unexpected collapse...
>>
>
> You shouldn't use ext3 for this situation.
>
> How is your RAID set up in terms of partition table?  It needs to be gpt
> based.  Last I checked, Redhat/Centos 5.x had problems booting from GPT (is
> this still true?) based systems.

Default LABEL-TYPE is 'msdos',after changing it into gpt, no error
occurs.This is the first time I deal with volumn larger than 2TB.
Thank you!


>
>
> I would suggest carving out a LUN specific for boot/root, and use the rest
> for storage.  Moreover, use the xfs kernel module.  If rockslinux 5.0
> doesn't support it, I'd suggest looking at different distributions
> (seriously).
>
> Large file system support is not something ext3 is good at, and it is
> something xfs is very good at.
>
> Joe
>
>
>>
>> ------------------------------------------------------------------------
>>
>> _______________________________________________
>> Beowulf mailing list, Beowulf at beowulf.org
>> To change your subscription (digest mode or unsubscribe) visit
>> http://www.beowulf.org/mailman/listinfo/beowulf
>>
>
>
> --
> Joseph Landman, Ph.D
> Founder and CEO
> Scalable Informatics LLC,
> email: landman at scalableinformatics.com
> web  : http://www.scalableinformatics.com
>       http://jackrabbit.scalableinformatics.com
> phone: +1 734 786 8423 x121
> fax  : +1 866 888 3112
> cell : +1 734 612 4615
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.scyld.com/pipermail/beowulf/attachments/20090213/7064e313/attachment.html


More information about the Beowulf mailing list