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I'm trying to upgrade some Linux systems to RHEL 6, but I cannot mount the home directories. I'm using EXT4 for the RHEL 6 system and EXT3 on the RHEL 5 server, which I'm mounting the directory from. I can't just use the mount command; I have to specify -t ext3, and when I do it says, "Special device (server name and mount point) does not exist". It works just fine from all the RHEL 5 machines, just not from this new RHEL 6 machine.

I just rebuilt the machine and used EXT3 as the file system type this time just to test. It produced the same results: It won't mount.

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You need to clarify if the file system is remote or not. If it's a directly attached device then you mount with ext3/ext4/reiserfs/whatever, if it's somewhere else on the network then you mount is using the type of network file system it's exported with, eg: smb, cifs, nfs. –  James Yale Dec 9 '10 at 16:26
    
I tried -t NFS it says wrong FS type –  Tom B Dec 10 '10 at 15:14

2 Answers 2

you need to convert that ext3 to ext4

# umount /dev/sdbx

# tune2fs -O extents,uninit_bg,dir_index /dev/sdbx

# fsck -pf /dev/sdbx

# mount /dev/sdbx

#vi /etc/fstab

#reboot

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Are you serious? Everything i read says it is backward compatible en.wikipedia.org/wiki/Ext4 –  Tom B Dec 10 '10 at 15:16
up vote 0 down vote accepted

It was a configuration error on my part why it wouldnt mount, but ext4 is backward compatible

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Can you tell us what the configuration error was please ? –  Iain Jun 19 '11 at 9:08

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