Cant mount my old /home [SOLVED]

ato · 2009-05-28 08:21:13

Hi
I recently reinstalled my arch because I messed my old installation up.
But during the installation, I could not mount my old /home to be my new /home
And I don't know how to mount it afterwards either, pleas help.
The filesystem is jfs

/Ato

Last edited by ato (2009-06-01 11:44:02)

kowalski · 2009-05-28 09:08:40

Hi,

first of all you should try mounting it manually. Do you know the name of the partition (as in /dev/sda*)?

mkdir /mnt/home
mount -t jfs /dev/sdaX /mnt/home/

You may have to use sudo for this (if configured) or change the user to "root".
See whether this works alright. If it does just add an entry in /etc/fstab to mount the partition at boot time.

Have a look at: http://wiki.archlinux.org/index.php/Fstab

If you are unable to mount the partition by hand post the output here.

Cheers.

IcePik · 2009-05-28 09:39:59

first run

fdisk -l

as root.

from the output find the partition id of your old home partition(in the device column)

it will look like /dev/sda2

open /etc/fstab in a text editor as root and add the line

/dev/sda2 /home jfs rw,users,noauto,noatime 0 0

replace /dev/sda2 in the code above with the partition id you identified earlier and reboot your system it should mount your old home in /home when it restarts

note: if your new /home directory is not empty it might not mount it and if you have old configuration files in your home directory then it might give you a couple of errors

you could alternately try mounting your old home to a temporary folder and copy your files to the new home(might be a safer option)

you can mount a filesystem temporarily by using the mount command

first create a directory(as root)

cd /mnt
mkdir oldhome

then run the mount command as root

mount -t jfs /dev/sda2 /mnt/oldhome

then go to /mnt/oldhome and copy your files to the new home directory

then to unmount the oldhome directory type (as root)

umount /dev/sda2

fukawi2 · 2009-05-28 09:55:51

Go with the suggestion from kowalski first... It's a much simpler first step in working out what the problem is...

Last edited by fukawi2 (2009-05-28 09:56:11)

ato · 2009-05-28 11:03:19

Neiter way is working

When I try to mount it like kowalski suggested this happens:

bash-3.2# mount -t jfs /dev/sdb6 /mnt/oldhome
mount: wrong fs type, bad option, bad superblock on /dev/sdb6,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

and when I try adding the line in /etc/fstab like IcePik suggested nothing happens, It does not mount my old /home to /home

my old /home is sdb6 and lies within the extended disk sdb4

bash-3.2# fdisk -l

Disk /dev/sda: 200.0 GB, 200049647616 bytes
255 heads, 63 sectors/track, 24321 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x1add1adc

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1       24320   195350368+   7  HPFS/NTFS

Disk /dev/sdb: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x67baa6e9

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *           1           5       40162   83  Linux
/dev/sdb2               6          71      530145   82  Linux swap / Solaris
/dev/sdb3              72        1895    14651280   83  Linux
/dev/sdb4            1896        9729    62926605    5  Extended
/dev/sdb5            1896        2138     1951866   83  Linux
/dev/sdb6            2139        9729    60974676   83  Linux

kowalski · 2009-05-28 11:10:29

What output does

dmesg | tail

give after trying to mount the disk?
Could it be you accidently re-wrote the partition table when reinstalling arch?
Furthermore do you have the package "jfsutils" installed?
If not install it and try mounting it again.

ato · 2009-05-28 11:23:06

bash-3.2# dmesg | tail
[drm] Initialized drm 1.1.0 20060810
pci 0000:01:00.0: setting latency timer to 64
[drm] Initialized radeon 1.29.0 20080528 on minor 0
[drm] Setting GART location based on new memory map
[drm] Loading R500 Microcode
[drm] Num pipes: 4
[drm] writeback test succeeded in 1 usecs
NET: Registered protocol family 10
lo: Disabled Privacy Extensions
eth0: no IPv6 routers present

I didn't re-wrote the partition table when I reinstalled arch
and I have jfsutils installed

kowalski · 2009-05-28 12:19:30

Is this actually the output of dmesg right after trying to mount the partition of interest?
No offense meant but I'm confused since it doesn't say anything about the error message stated above when you tried to mount the partition and got an error about wrong file system, bad blocks and so on.

perbh · 2009-05-28 13:41:25

Kowalski's first post is the best one - if that fails, try

mount /dev/sdb6 /mnt/home  # ie use 'auto' for filesystem

If that fails - your sdb6 is lost! (ie it has no proper filesystem on it)

lseubert · 2009-05-28 14:08:21

Assuming you get the partition mounted, you might have a few additional housekeeping chores.

For example, you will want to change ownership on all the files in your home directory over to your username. Either as root or using the sudo command, execute the following command - substitute your own username wherever you see the word 'username' in the following line:

chown -R username /home/username/*

Also, you will need to change permissions. To give your username read, write, and execute permissions on all files in your home directory, but to exclude them from other users or members of your group for best security; either as root or using the sudo command, execute the following command - substitute your own username wherever you see the word 'username' in the following line:

chmod -R 700 /home/username/*

Cheers,
Luke Seubert

fukawi2 · 2009-05-28 23:40:01

perbh wrote:

If that fails - your sdb6 is lost! (ie it has no proper filesystem on it)

Let's not jump to that conclusion just yet... What is the output of the following (run as root):

file - < /dev/sda6

On a JFS partition, it should say:

/dev/stdin: data

And try running an fsck over the partition:

fsck -f /dev/sda6

ato · 2009-05-29 07:35:46

@kowalsky
yes this is the output directly after trying to mount with: mount -t jfs /dev/sdb6 /mnt/home

@perbh
mount /dev/sdb6 /mnt/home
does not work either

@fukawi2

bash-3.2# file - < /dev/sdb6
/dev/stdin: data

bash-3.2# fsck -f /dev/sdb6
fsck 1.41.5 (23-Apr-2009)
fsck.jfs version 1.1.14, 06-Apr-2009
processing started: 5/29/2009 9.29.44
The current device is:  /dev/sdb6
Block size in bytes:  4096
Filesystem size in blocks:  15243669
**Phase 0 - Replay Journal Log
**Phase 1 - Check Blocks, Files/Directories, and  Directory Entries
**Phase 2 - Count links
**Phase 3 - Duplicate Block Rescan and Directory Connectedness
**Phase 4 - Report Problems
**Phase 5 - Check Connectivity
**Phase 6 - Perform Approved Corrections
**Phase 7 - Rebuild File/Directory Allocation Maps
**Phase 8 - Rebuild Disk Allocation Maps
 60974676 kilobytes total disk space.
     3121 kilobytes in 1227 directories.
 47244668 kilobytes in 10697 user files.
        4 kilobytes in extended attributes
    51193 kilobytes reserved for system use.
 13681932 kilobytes are available for use.
Filesystem is clean.

What does this mean?

kowalski · 2009-05-29 10:50:46

I'm not to deeply into fsck but judging from the output posted I'd say everything should work since fsck doesn't give any errors and says your filesystem is clean :-)
Furthermore fsck was able to tell you about the filesystem's disk space usage therefore it was able to read the disk's content.
So, your data appears not be lost. My last idea is to boot a gparted live cd and try mounting the partition from the live os as described in my first post. If that also doesn't work I'm totally lost.

Oh, I guess you tried mounting the disk after fsck ran didn't you?!

ato · 2009-05-29 11:21:16

:D:D:D:D:D:D;););););););):P:P:P:lol::lol::lol::lol::lol::lol::cool::cool::cool::cool::cool::cool::cool:

THANKS GUYS

IT WORKED

I'm so thankful, omg I was starting to lose hope

karol · 2009-05-29 11:34:09

[solved]?

kowalski · 2009-05-29 11:35:51

What did work? fsck -f?

fukawi2 · 2009-05-29 11:41:55

ato wrote:

THANKS GUYS
IT WORKED
I'm so thankful, omg I was starting to lose hope

Glad it worked out. I know that sinking feeling as hope drains out of you after you realise something's gone wrong with your data.

ato · 2009-06-01 04:21:22

@kowlaski
yes after these two comands it worked:

file - < /dev/sdb6
fsck -f /dev/sdb6

I don't know if it was fsck -f that did it

@ karol
yes [solved]
how do you add it to the topic line?

karol · 2009-06-01 09:56:44

Edit your first post and add [SOLVED] to the title.

Arch Linux

#1 2009-05-28 08:21:13

Cant mount my old /home [SOLVED]

#2 2009-05-28 09:08:40

Re: Cant mount my old /home [SOLVED]

#3 2009-05-28 09:39:59

Re: Cant mount my old /home [SOLVED]

#4 2009-05-28 09:55:51

Re: Cant mount my old /home [SOLVED]

#5 2009-05-28 11:03:19

Re: Cant mount my old /home [SOLVED]

#6 2009-05-28 11:10:29

Re: Cant mount my old /home [SOLVED]

#7 2009-05-28 11:23:06

Re: Cant mount my old /home [SOLVED]

#8 2009-05-28 12:19:30

Re: Cant mount my old /home [SOLVED]

#9 2009-05-28 13:41:25

Re: Cant mount my old /home [SOLVED]

#10 2009-05-28 14:08:21

Re: Cant mount my old /home [SOLVED]

#11 2009-05-28 23:40:01

Re: Cant mount my old /home [SOLVED]

#12 2009-05-29 07:35:46

Re: Cant mount my old /home [SOLVED]

#13 2009-05-29 10:50:46

Re: Cant mount my old /home [SOLVED]

#14 2009-05-29 11:21:16

Re: Cant mount my old /home [SOLVED]

#15 2009-05-29 11:34:09

Re: Cant mount my old /home [SOLVED]

#16 2009-05-29 11:35:51

Re: Cant mount my old /home [SOLVED]

#17 2009-05-29 11:41:55

Re: Cant mount my old /home [SOLVED]

#18 2009-06-01 04:21:22

Re: Cant mount my old /home [SOLVED]

#19 2009-06-01 09:56:44

Re: Cant mount my old /home [SOLVED]

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