mount hda3 fails

[Nigel Wade]

thufir wrote:
> How can I mount hda3 please?

You can't, directly.

> 
> 
> [root at localhost ~]#
> [root at localhost ~]#
> [root at localhost ~]# fdisk -l
> 
> Disk /dev/hda: 80.0 GB, 80026361856 bytes
> 255 heads, 63 sectors/track, 9729 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> 
>    Device Boot      Start         End      Blocks   Id  System
> /dev/hda1   *           1        1912    15358108+   7  HPFS/NTFS
> /dev/hda2            1913        1925      104422+  83  Linux
> /dev/hda3            1926        9729    62685630   8e  Linux LVM
> 
> Disk /dev/hdb: 30.7 GB, 30750031872 bytes
> 255 heads, 63 sectors/track, 3738 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> 
>    Device Boot      Start         End      Blocks   Id  System
> /dev/hdb1   *           1          13      104391   83  Linux
> /dev/hdb2              14        3738    29921062+  8e  Linux LVM
> [root at localhost ~]#
> [root at localhost ~]# mount
> /dev/mapper/VolGroup01-LogVol00 on / type ext3 (rw)
> none on /proc type proc (rw)
> none on /sys type sysfs (rw)
> none on /dev/pts type devpts (rw,gid=5,mode=620)
> usbfs on /proc/bus/usb type usbfs (rw)
> /dev/hdb1 on /boot type ext3 (rw)
> none on /dev/shm type tmpfs (rw)
> none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
> sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
> /dev/hda2 on /mnt/hda2 type ext3 (rw,noexec,nosuid,nodev)
> [root at localhost ~]#
> [root at localhost ~]# ll /mnt/
> total 6
> drwxr-xr-x  4 root root 1024 Jun 24 19:31 hda2
> drwxr-xr-x  2 root root 4096 Jun 28 00:58 hda3
> [root at localhost ~]#
> [root at localhost ~]# cat /etc/fstab
> # This file is edited by fstab-sync - see 'man fstab-sync' for details
> /dev/VolGroup01/LogVol00 /                       ext3    defaults        1 1
> LABEL=/boot1            /boot                   ext3    defaults        1 2
> none                    /dev/pts                devpts  gid=5,mode=620  0 0
> none                    /dev/shm                tmpfs   defaults        0 0
> none                    /proc                   proc    defaults        0 0
> none                    /sys                    sysfs   defaults        0 0
> /dev/VolGroup01/LogVol01 swap                    swap    defaults        0 0
> /dev/VolGroup00/LogVol01 swap                    swap    defaults        0 0
> /dev/hdd                /media/cdrecorder       auto   
> pamconsole,ro,exec,noauto,managed 0 0
> /dev/hdc                /media/cdrom            auto   
> pamconsole,ro,exec,noauto,managed 0 0
> /dev/hda2               /mnt/hda2               ext3    users,rw        0
> /dev/hda3               /mnt/hda3               ext3    users,rw        0
> 
> [root at localhost ~]#
> [root at localhost ~]# mount -a
> mount: /dev/hda3 already mounted or /mnt/hda3 busy
> [root at localhost ~]#
> [root at localhost ~]# cat /etc/fedora-release
> Fedora Core release 3 (Heidelberg)
> [root at localhost ~]#
> [root at localhost ~]# date
> Thu Jun 28 01:05:20 PDT 2007
> [root at localhost ~]#
> 
> 
> thanks,
> 
> 
> Thufir
> 

This is very similar to the  system you were asking about yesterday, 
isn't it? Where you wanted to mount "windows"?

The same applies to /dev/hda3 here as applied to /dev/sdb3 on that 
system. This partition is an LVM and is under the control of LVM, you 
don't mount it directly. In fact you never actually mount a physical 
partition, you mount filesystems. Until the advent of software RAID and 
LVM a filesystem normally equated to a physical partition but that is 
not necessarily true any longer. Here I presume that /dev/hda3 does not 
have a filesystem on it so it can't be mounted.

As Andy points out in his reply you need use the LVM tools to determine 
what logical volumes you have on the system as a whole. With LVM you 
create filesystems on logical volumes and mount those. Logical volumes 
are allocated from a volume group which is composed of a number of 
physical volumes. A physical volume is a partition handed over to LVM 
using pvcreate.

The physical partition /dev/hda3 could be a single logical volume, or it 
could be a part of a larger logical volume, or it could be split into 
multiple logical volumes. Only LVM knows.

-- 
Nigel Wade, System Administrator, Space Plasma Physics Group,
             University of Leicester, Leicester, LE1 7RH, UK
E-mail :    nmw at ion.le.ac.uk
Phone :     +44 (0)116 2523548, Fax : +44 (0)116 2523555