Cannot mount disk in VM

rabouin

New Member
May 9, 2019
14
1
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Hello guys,

I have successfully mounted my disk in proxmox server and added it in hardware VM ( debian )
But I cannot mount it in VM.

Proxmox

Code:
root@pve:/mnt/sdc# df -h
Filesystem            Size  Used Avail Use% Mounted on
udev                   16G     0   16G   0% /dev
tmpfs                 3.2G   18M  3.2G   1% /run
/dev/mapper/pve-root   94G  2.5G   87G   3% /
tmpfs                  16G   43M   16G   1% /dev/shm
tmpfs                 5.0M     0  5.0M   0% /run/lock
tmpfs                  16G     0   16G   0% /sys/fs/cgroup
/dev/sdd1             916G   70G  847G   8% /mnt/sdd
/dev/sdb1             2.7T  2.7T   73G  98% /mnt/sdb
/dev/sdc1             3.6T  3.3T  354G  91% /mnt/sdc
/dev/mapper/pve-vms   335G  7.0G  311G   3% /vms
/dev/sda1             3.6T  541G  3.1T  15% /mnt/sda
/dev/fuse              30M   16K   30M   1% /etc/pve

root@pve:/mnt/sdc# fdisk -l
Disk /dev/nvme0n1: 465.8 GiB, 500107862016 bytes, 976773168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 93FA0D85-DE7C-43E4-A748-97DC423DE46D

Device           Start       End   Sectors   Size Type
/dev/nvme0n1p1      34      2047      2014  1007K BIOS boot
/dev/nvme0n1p2    2048   1050623   1048576   512M EFI System
/dev/nvme0n1p3 1050624 976773134 975722511 465.3G Linux LVM


Disk /dev/sda: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 5F9E576B-E885-4EEE-94DD-D399205B14A5

Device     Start        End    Sectors  Size Type
/dev/sda1   2048 7814037134 7814035087  3.7T Linux filesystem


Disk /dev/sdb: 2.7 TiB, 3000592982016 bytes, 5860533168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 373C41BD-8EFA-4AB5-BDBC-779BD3616B4E

Device     Start        End    Sectors  Size Type
/dev/sdb1   2048 5860533134 5860531087  2.7T Linux filesystem


Disk /dev/sdc: 3.7 TiB, 4000787030016 bytes, 7814037168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: A378684D-93B0-43A6-B691-3719BF6C4CBC

Device     Start        End    Sectors  Size Type
/dev/sdc1   2048 7814037134 7814035087  3.7T Linux filesystem


Disk /dev/sdd: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 4385A625-9FE4-4064-9DB0-216B79B21415

Device     Start        End    Sectors   Size Type
/dev/sdd1   2048 1953525134 1953523087 931.5G Linux filesystem


Disk /dev/mapper/pve-swap: 5 GiB, 5368709120 bytes, 10485760 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/pve-root: 96 GiB, 103079215104 bytes, 201326592 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/pve-vms: 341.3 GiB, 366460534784 bytes, 715743232 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

root@pve:/mnt/sdc# cd /mnt/sda/
root@pve:/mnt/sda# ls
images  lost+found  NAS4
root@pve:/mnt/sda# pwd
/mnt/sda
root@pve:/mnt/sda# ls
images  lost+found  NAS4
root@pve:/mnt/sda#

VM:

Code:
  root@debian:/mnt/sdb# mount -t ext3 /dev/sdb /mnt/sdb/
mount: wrong fs type, bad option, bad superblock on /dev/sdb,
       missing codepage or helper program, or other error

       In some cases useful info is found in syslog - try
       dmesg | tail or so.
root@debian:/mnt/sdb# mount /dev/sdb /mnt/sdb/
mount: wrong fs type, bad option, bad superblock on /dev/sdb,
       missing codepage or helper program, or other error

       In some cases useful info is found in syslog

root@debian:/mnt/sdb# fdisk -l
Disk /dev/sdb: 3 TiB, 3283502497792 bytes, 6413090816 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/sda: 32 GiB, 34359738368 bytes, 67108864 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x707a4ed9

Device     Boot    Start      End  Sectors  Size Id Type
/dev/sda1  *        2048 65011711 65009664   31G 83 Linux
/dev/sda2       65013758 67106815  2093058 1022M  5 Extended
/dev/sda5       65013760 67106815  2093056 1022M 82 Linux swap / Solaris

root@debian:/mnt/sdb# df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            488M     0  488M   0% /dev
tmpfs           100M  3.4M   97M   4% /run
/dev/sda1        31G  3.0G   26G  11% /
tmpfs           499M     0  499M   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           499M     0  499M   0% /sys/fs/cgroup
tmpfs           100M  4.0K  100M   1% /run/user/111
tmpfs           100M  8.0K  100M   1% /run/user/1000

dmesg

 1904.041560] EXT4-fs (sdb): VFS: Can't find ext4 filesystem
[ 1977.918531] EXT4-fs (sdb): VFS: Can't find ext4 filesystem
 
This will not work.
You could set-up a samba share on your host which then provides access to your data in the VMs.
 
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https://wiki.debian.org/SambaServerSimple
You will have to setup a samba server, share the corresponding content and use a client/mount the shares in the VM to access the data.
What is your goal, what exactly are you trying to achieve?
 
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