Arch Linux

Spy

Member

Registered: 2009-02-26

Posts: 78

Ext4 - can't mount

Hi! I just installed ext4 on one partition and I can't mount this crap.Please help.I get:
bash-3.2# mount -t ext4 /dev/sda7 /mnt/ext4
mount: wrong fs type, bad option, bad superblock on /dev/sda7,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

bash-3.2# mount /dev/sda7 /mnt/ext4
mount: you must specify the filesystem type
bash-3.2# dmesg | tail
X:3220 conflicting memory types a0000000-b0000000 write-combining<->uncached-minus
reserve_memtype failed 0xa0000000-0xb0000000, track write-combining, req write-combinin
X:3362 freeing invalid memtype a0000000-b0000000
X:3220 conflicting memory types a0000000-b0000000 write-combining<->uncached-minus
reserve_memtype failed 0xa0000000-0xb0000000, track write-combining, req write-combinin
X:3370 freeing invalid memtype a0000000-b0000000
ext4: No journal on filesystem on sda7
EXT4-fs: Update your userspace programs to mount using ext4
EXT4-fs: ext4dev backwards compatibility will go away by 2.6.31
ext4: No journal on filesystem on sda7

zyghom

Member

From: Poland/currently Africa

Registered: 2006-05-11

Posts: 432

Website

Re: Ext4 - can't mount

how did you make FS this partition ? was it: mkfs.ext4 /dev/sda7  ?
what FW shows you i.e. gparted ?

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Zygfryd Homonto

pointone

Wiki Admin

From: Waterloo, ON

Registered: 2008-02-21

Posts: 379

Re: Ext4 - can't mount

"EXT4-fs: Update your userspace programs to mount using ext4"

-- Is your system fully up-to-date? You should be running e2fsprogs version 1.41.3 (pacman -Qi e2fsprogs).

"ext4: No journal on filesystem on sda7"

-- As zyghom asked, how did you manage to create an ext4 filesystem without a journal? Please describe how you created this partition.

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M*cr*s*ft: Who needs quality when you have marketing?

kjon

Member

From: Temuco, Chile

Registered: 2008-04-16

Posts: 398

Re: Ext4 - can't mount

jeez, I had the same problem as you and when I run fsck I rendered my disk unusable. I had to recreate the filesystem and I lost 100 GB of anime

I just created and tuned the fs as follows

mkfs.ext4 /dev/sdg1
tune2fs -m 0 -c 0 /dev/sdg1

Anyway, I add a huge list to transmission in order to recover the anime I lost. My computer is still downloading

Last edited by kjon (2009-02-26 21:28:27)

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They say that if you play a Win cd backward you hear satanic messages. That's nothing! 'cause if you play it forwards, it installs windows.

Spy

Member

Registered: 2009-02-26

Posts: 78

Re: Ext4 - can't mount

I created parrtition in the same way as Kjon. Gparted detecting this partition as ext2 but I can't mount it as ext2/ext3/ext4. All files in system are up to date. Anybody know how to recover the data if no chance to mount it?

Last edited by Spy (2009-02-27 09:52:16)

numasan

Member

Registered: 2009-11-13

Posts: 26

Re: Ext4 - can't mount

I just ran into this error (ext4: no journal on filesystem...) and found a fix that worked for me:

tune2fs -j /dev/sd*

It creates a journal on your affected ext4 partition and it should be able to mount again.

tomk

Forum Fellow

From: Ireland

Registered: 2004-07-21

Posts: 9,839

Re: Ext4 - can't mount

numasan - this thread is over a year old, and the original issue related to earlier implementations of ext4 that are no longer relevant.

Please read the guidelines in relation to old threads, and anything else there that is useful to you.

Closed.