Re: large filesystem corruptions

[Kapetanakis Giannis <bilias@edu.physics.uoc.gr>]

On 13/03/10 15:19, Kapetanakis Giannis wrote:

> I will try Fedora 12/64bit on Monday when I have physical access.
>
> Right now all tests have failed.
> OS in Centos 5.4 x86 PAE so I opened a ticket both in Centos and Redhat
> bugzilla.
> I don't have any contract with redhat but I hope they will give a try on
> this.
>
> https://bugzilla.redhat.com/show_bug.cgi?id=573185
> http://bugs.centos.org/view.php?id=4239
>
> My feelings are that it has to do with the software raid layer and not
> the filesystem (ext4, xfs, gfs all died).
> The filesystem seems to not get the appropriate physical/logical
> quandaries from the raid layer.
>
> Unless the x86 kernel is not capable of addressing
> large filesystems as it is documented (16TB as you said).

I thought I should report here as well.

I've installed Centos 5.4 x64 and all going well so far.
No corruptions at all.

My setup is as before

sdb (hard raid5)
  |
  |------> md0 (soft raid0)----> LVM ----> ext4
  |
sdc (hard raid5)

The only strange thing I've noticed is that pvcreate
is messing with the gpt label on md0. Don't know of that
is normal.

https://bugzilla.redhat.com/show_bug.cgi?id=573185#c4

#fdisk -l /dev/md0

WARNING: GPT (GUID Partition Table) detected on '/dev/md0'! The util fdisk
doesn't support GPT. Use GNU Parted.


Disk /dev/md0: 14978.6 GB, 14978676948992 bytes
2 heads, 4 sectors/track, -638063744 cylinders
Units = cylinders of 8 * 512 = 4096 bytes

Disk /dev/md0 doesn't contain a valid partition table

# parted /dev/md0
GNU Parted 1.8.1
Using /dev/md0
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) p
Error: Unable to open /dev/md0 - unrecognised disk label.

thanks all

Giannis