topic Re: filesystem in Operating System - Linux

filesystem

Tammy Liang — Thu, 18 Jan 2007 12:30:11 GMT

I created ext3 file system and I can mount these file system manually. But after I add them to /etc/fstab file. I run "mount -all", I get error message below:
ext3: No jounal on file system on sdb1
mount: wrong fs type, bad option, bad superblock on /dev/sdb1 or too many mounted file systems.
I know it is not too many other mounted file system, because I have other linux has more mounted file systems than this one.

Thanks for any suggestion.

Re: filesystem

James R. Ferguson — Thu, 18 Jan 2007 12:34:50 GMT

Hi Tammy:

The error doesn't tell you exactly what's wrong; only the various possiblities. Note the word "OR".

Read the 'mount' manpages for the options allowed with ext3 filesytems and examine your entry in '/etc/fstab'.

Regards!

...JRF...

Re: filesystem

Tammy Liang — Thu, 18 Jan 2007 12:50:47 GMT

I see the problem after run mount -l.
The file system is ext2 instead of ext3.
How can I convert it to ext3 or how can I create ext3 file system?

Thanks for the reply.

Re: filesystem

Tammy Liang — Thu, 18 Jan 2007 12:56:06 GMT

I fixed it by rerun mkfs -t ext3, now I can mount these file system with mount -all.
Thanks for the reply.

Re: filesystem

Heironimus — Thu, 18 Jan 2007 13:13:27 GMT

You could also have used tune2fs to add the journal without reformatting.

Re: filesystem

Alexander Chuzhoy — Fri, 19 Jan 2007 02:07:06 GMT

Yep, you didn't have to destroy all your data with mkfs.
You can easily convert ext2 filesystem to ext3 and vice versa, while keeping the data, with tune2fs tool.
For example if you have ext2 filesystem on /dev/hdb1

tune2fs -j /dev/hdb1 will convert it to ext3

tune2fs -O has_journal /dev/hdb1 will convert ext3 filesystem to ext2

Re: filesystem

Tammy Liang — Fri, 19 Jan 2007 09:04:10 GMT

Thanks all. I will try tune2fs..

Re: filesystem

Alpha977 — Fri, 19 Jan 2007 09:14:10 GMT

Hello Tammy!

Ok for the problem fixing, but i think you have a configuration problem with /etc/fstab.
Can you post it?

Regards!

Re: filesystem

Tammy Liang — Fri, 19 Jan 2007 09:21:44 GMT

After I changed from ext2 to ext3. I have no problem to mount with /etc/fstab file.
Thanks for the reply.