ok, then i'm really sorry for informing you wrong anyway since we started a kernel talk

why CentOS has and old but stable kernel ?

From: Rob Kampen rkampen@kampensonline.com To: CentOS mailing list centos@centos.org Cc: Sent: Thursday, December 9, 2010 3:15:58 PM Subject: Re: [CentOS] 5.5 x86_64 live cd

cybernet wrote:

A preliminary development version of ext4 was included in version 2.6.19^[4] http://en.wikipedia.org/wiki/Ext4#cite_note-3 of the Linux kernel http://en.wikipedia.org/wiki/Linux_kernel. On 11 October 2008, the patches that mark ext4 as stable code were merged in the Linux 2.6.28 source code repositories,^[5] http://en.wikipedia.org/wiki/Ext4#cite_note-4 denoting the end of the development phase and recommending ext4 adoption. Kernel 2.6.28, containing the ext4 filesystem, was finally released on 25 December 2008

http://en.wikipedia.org/wiki/Ext4

CentOS5.5 has the 2.6.18.* kernel so doesn't support ext4

WRONG - please look at the CentOS/Redhat release notes - it was back ported - this is why we use this distro.

*From:* Jason Pyeron jpyeron@pdinc.us *To:* 'CentOS mailing list' centos@centos.org *Cc:* *Sent:* Thursday, December 9, 2010 9:38:20 AM *Subject:* [CentOS] 5.5 x86_64 live cd

In the bang head and repeat mode here.

The live usb partition is /dev/sda1

Reboot / power on It auto mounts the /dev/sda2 as ext4 on /mnt/disc/sda2 $ umount /mnt/disc/sda2 $ mkdir /root/foo $ mke2fs /dev/sda2 $ mount /dev/sda2 /root/foo Kernel panic

Snip from the kernel panic: ?????? list_del+0xb/0x71 cache_alloc_refill+0xf1/0x186 ext2_fill_super+0x0/0xa37 .... system_call+0x7e/0x83

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