can't mount /media/sda5

stonecoldjha · 2009-02-06 15:41:36

hi,i have a 86.5 GB ext3 partition that i use for storage.its entry is there in /etc/fstab.i hve two non-root accounts on my system,one of which mounts that partition,while the other doesn't.how do i make the other mount it as well?it succesfully mounts other partitions,viz sda7(ext3),sda6(root partition),sda8(swap) and sda1(ntfs).

aglarond · 2009-02-06 15:49:09

It's probably a difference in the groups they're a part of. Try to cat /etc/group and compare the two users.

-mS

kludge · 2009-02-06 16:09:00

to expound on the above just a bit:

mount takes a bunch of options that can be specified in /etc/fstab.

'user' let's a user mount it, 'users' lets all users mount it, and 'group' lets members of the owning group mount it.

stonecoldjha · 2009-02-06 16:26:51

i tried mounting the mesda5 as follows:

[sonu@arch ~]$ sudo mount /media/sda5

We trust you have received the usual lecture from the local System
Administrator. It usually boils down to these three things:

#1) Respect the privacy of others.
#2) Think before you type.
#3) With great power comes great responsibility.

Password:
mount: /dev/sda5 already mounted or /media/sda5 busy
mount: according to mtab, /dev/sda5 is already mounted on /media/sda5
[sonu@arch ~]$ fdisk -l
Cannot open /dev/sda
[sonu@arch ~]$

but when i open nautilus i don't see that partition.

aglarond · 2009-02-06 16:30:37

What the output of

# mount

?

-mS

stonecoldjha · 2009-02-06 16:37:43

the following is the output of cat /etc/group:

[sonujha@arch ~]$ cat /etc/group
root::0:root
bin::1:root,bin,daemon
daemon::2:root,bin,daemon
sys::3:root,bin
adm::4:root,daemon
tty::5:
disk::6:root
lp::7:daemon,sonujha,quadshot
mem::8:
kmem::9:
wheel::10:root,sonujha,quadshot,sonu
ftp::11:
mail::12:
uucp:x:14:
log::19:root
smmsp::25:
games::50:
network:x:90:
video:x:91:sonujha,root,quadshot,sonu
audio::92:sonujha,root,quadshot,sonu
optical::93:sonujha,hal,quadshot,sonu
floppy:x:94:hal
storage:x:95:sonujha,hal,quadshot,sonu
power:x:98:sonujha,quadshot,sonu
nobody::99:
users::100:sonujha,quadshot,sonu
locate:x:21:
http:x:33:
scanner:x:96:
dbus:x:81:
sonujha:x:1000:
hal:x:82:
policykit:x:1001:
avahi:x:84:
camera:x:97:
gdm:x:1002:
quadshot:x:1003:
sonu:x:1004:
[sonujha@arch ~]$ 
the group sonujha has no trouble loacating that partition,but i can't see or use that partition in the group sonu.the following are the contents off my fstab file:

# 
# /etc/fstab: static file system information
#
# <file system>        <dir>         <type>    <options>          <dump> <pass>
none                   /dev/pts      devpts    defaults            0      0
none                   /dev/shm      tmpfs     defaults            0      0


#/dev/cdrom /media/cdrom   auto    ro,user,noauto,unhide   0      0
#/dev/dvd /media/dvd   auto    ro,user,noauto,unhide   0      0
UUID=26c0405d-1389-4c95-af30-348bf932e930 swap swap defaults 0 0
UUID=8fb2110a-e5f9-4185-bdbc-cfcf12bff661 / ext3 
defaults,noatime,noadiratime 0 1
/dev/scd0                                  /media/cdrom0  udf,iso9660  users,noauto,exec,utf8       0  0  
/dev/sda1                                  /media/sda1    ntfs         nls=iso8859-1,auto,users,umask=000     0  0  
/dev/sda5                                  /media/sda5    ext3         errors=remount-ro,auto,users           0  0  
/dev/sda6                                  /media/sda6    ext3         errors=remount-ro,auto,users           0  1 
/dev/sda7                                  /media/sda7    ext3         errors=remount-ro,auto,users           0  0  
/dev/sda8                                  /media/sda8    swap         sw,auto,users                          0  0

what do i do now?

mild edit by Mr Green

Mr Green · 2009-02-06 16:41:51

aglarond wrote:

What the output of
# mount
?
-mS

We need to see where its mounted!

Inxsible · 2009-02-06 16:48:09

df -h

is another command which will show you where all your disks are mounted

stonecoldjha · 2009-02-06 16:55:21

here it is:

[sonu@arch ~]$ mount
/dev/sda6 on / type ext3 (rw)
none on /dev type ramfs (rw)
none on /proc type proc (rw)
none on /sys type sysfs (rw)
none on /dev/pts type devpts (rw)
none on /dev/shm type tmpfs (rw)
/dev/sda1 on /media/sda1 type ntfs (rw,noexec,nosuid,nodev,nls=iso8859-1,umask=000)
/dev/sda5 on /media/sda5 type ext3 (rw,noexec,nosuid,nodev,errors=remount-ro)
/dev/sda7 on /media/sda7 type ext3 (rw,noexec,nosuid,nodev,errors=remount-ro)
[sonu@arch ~]$

as you can see all the partitions are ro,and i can't write anything to them.

Inxsible · 2009-02-06 17:02:34

stonecoldjha wrote:

here it is:
[sonu@arch ~]$ mount
/dev/sda6 on / type ext3 (rw)
none on /dev type ramfs (rw)
none on /proc type proc (rw)
none on /sys type sysfs (rw)
none on /dev/pts type devpts (rw)
none on /dev/shm type tmpfs (rw)
/dev/sda1 on /media/sda1 type ntfs (rw,noexec,nosuid,nodev,nls=iso8859-1,umask=000)
/dev/sda5 on /media/sda5 type ext3 (rw,noexec,nosuid,nodev,errors=remount-ro)
/dev/sda7 on /media/sda7 type ext3 (rw,noexec,nosuid,nodev,errors=remount-ro)
[sonu@arch ~]$
as you can see all the partitions are ro,and i can't write anything to them.

That's because you are remounting them as read-only on errors (atleast the sda5 and sda7) Do you see any errors while mounting them the first time? Unmount the drives and then mount them again in terminal to see if there were any errors

stonecoldjha · 2009-02-06 17:29:46

i unmounted the two drives that were visible in nautilus(sda1 and sda7).then,did the following:

onu@arch ~]$ sudo mount /media/sda1
Password:
[sonu@arch ~]$ sudo mount /media/sda7
[sonu@arch ~]$ sudo mount /media/sda8
mount: unknown filesystem type 'swap'
[sonu@arch ~]$ sudo mount /media/sda5
mount: /dev/sda5 already mounted or /media/sda5 busy
mount: according to mtab, /dev/sda5 is already mounted on /media/sda5
[sonu@arch ~]$

as you can see i could successfully mount those two partitions,but its not the same about sda5.

aglarond · 2009-02-06 17:47:40

Your entry for sda8 is wrong. It should be

/dev/sda8                                  swap    swap         defaults                          0  0

For sda5 try

# sudo umount /media/sda5
# sudo mount /media/sda5

and see what it spits out.

-mS

Last edited by aglarond (2009-02-06 17:48:00)

perbh · 2009-02-06 17:56:22

Hmmm - I'm wondering if some process is hugging it (at r/o) which is why you cant umount/mount.

Try to work from a console only (ie no X), do a 'df' command and if it's mounted, first umount it and then try to mount again (as r/w)

stonecoldjha · 2009-02-07 04:49:41

i did the df command from the console,and there i saw that it was mounted.

i also did the following after starting gnome:

[sonu@arch ~]$ fd
bash: fd: command not found
[sonu@arch ~]$ fdisk -l
Cannot open /dev/sda
[sonu@arch ~]$ sudo mount /media/sda5
Password:
mount: /dev/sda5 already mounted or /media/sda5 busy
mount: according to mtab, /dev/sda5 is already mounted on /media/sda5
[sonu@arch ~]$ sudo umount /media/sda5
[sonu@arch ~]$ sudo mount /media/sda5
[sonu@arch ~]$ cd /media/sda5/LAN downloads
bash: cd: /media/sda5/LAN: Permission denied
[sonu@arch ~]$ cd /media/sda5/music
bash: cd: /media/sda5/music: Permission denied
[sonu@arch ~]$ cd /media/sda1/windows
[sonu@arch windows]$

so,i could unmount sda5,and then mount it back.but i was unable to open a directory 'music" in sda5,unlike the directory 'windows' in sda1(the one containing windows).

kludge · 2009-02-07 15:03:20

it's all about permissions.

you can't run fdisk as a normal user unless that user belongs to the group that owns the block device (i.e.: 'disk' on my system.).

you mounted /dev/sda5 on /media/sda5 as root (using 'sudo'), so that filesystem is owned by root:root. that's why user sonu can't access it. see my post above for advice on using options in fstab to allow users to mount the device so they can access it.

aglarond · 2009-02-07 15:07:06

Try running all of the following:
# ls -ld /media/sda1
# ls -ld /media/sda5
# ls -ld /media/sda5/music

and compare the permissions. It may just be that they're set wrong on the drive.

-mS

Arch Linux

#1 2009-02-06 15:41:36

can't mount /media/sda5

#2 2009-02-06 15:49:09

Re: can't mount /media/sda5

#3 2009-02-06 16:09:00

Re: can't mount /media/sda5

#4 2009-02-06 16:26:51

Re: can't mount /media/sda5

#5 2009-02-06 16:30:37

Re: can't mount /media/sda5

#6 2009-02-06 16:37:43

Re: can't mount /media/sda5

#7 2009-02-06 16:41:51

Re: can't mount /media/sda5

#8 2009-02-06 16:48:09

Re: can't mount /media/sda5

#9 2009-02-06 16:55:21

Re: can't mount /media/sda5

#10 2009-02-06 17:02:34

Re: can't mount /media/sda5

#11 2009-02-06 17:29:46

Re: can't mount /media/sda5

#12 2009-02-06 17:47:40

Re: can't mount /media/sda5

#13 2009-02-06 17:56:22

Re: can't mount /media/sda5

#14 2009-02-07 04:49:41

Re: can't mount /media/sda5

#15 2009-02-07 15:03:20

Re: can't mount /media/sda5

#16 2009-02-07 15:07:06

Re: can't mount /media/sda5

Board footer