Loopmount command failing with error "1320-007 loopmount: Failed to mount the imagefile"

Troubleshooting

Problem

Loopmount command failing with error "1320-007 loopmount: Failed to mount the imagefile".

Symptom

You receive the following error message after running the command:

# loopmount -i Virtual_IO_Server_Base_Install_3.1.3.14_Flash__122021_LCD8250309.iso -o "-V udfs -o ro" -m /mnt/dvd
    1320-007 loopmount: Failed to mount the imagefile

Cause

Scenario #1 Probable Cause
Mount point directory does not exist.

Scenario #2 Probable Cause
The mount point directory has already been mounted before.

Scenario #3 Probable Cause
The ISO image path is incorrect or not the absolute path.

Scenario #4 Probable Cause
The ISO image is corrupted.

Scenario #5 Probable Cause
Not providing the correct options for the loopmount command

Environment

AIX and VIOS

Resolving The Problem

Scenario #1: Mount point directory does not exist

You can check that the mount point directory exists by running the following command:

$ ls -l /mnt/dvd

If you have encountered the following error:
ls: 0653-341 The file /mnt/dvd does not exist.
That means that the mount point is missing and needed to be added.

# mkdir -p /mnt/dvd

Scenario #2: The mount point directory has already been mounted before.

To make sure that your mount point directory is not read only and has not been mounted before, you can run the following command:

$ df -g

Filesystem    GB blocks      Free %Used    Iused %Iused Mounted on
/dev/hd4           0.50      0.46    9%     3443     4% /
/dev/hd2           5.00      1.08   79%    73539    22% /usr
/dev/hd9var        1.00      0.66   35%     6495     5% /var
/dev/hd3           5.00      4.98    1%      108     1% /tmp
/dev/hd1          30.00     25.17   17%     4552     1% /home
/dev/hd11admin      0.50      0.50    1%        5     1% /admin
/proc                 -         -    -         -     -  /proc
/dev/hd10opt       1.00      0.55   46%     7570     6% /opt
/dev/livedump      0.50      0.50    1%        4     1% /var/adm/ras/livedump
/dev/fslv00       30.00     21.98   27%        8     1% /31310
/ahafs                -         -    -        40     1% /aha
/dev/loop0         4.62      0.00  100%  2420809   100% /mnt/dvd

If there was a /dev/loop mounted on /mnt/dvd, then it would result in the mentioned error as you cannot mount on a file system that has been already mounted on.

Scenario #3: The ISO image path is incorrect or not the absolute path.

You need to make sure that the correct absolute path of the ISO is added to the command. It can help to run the following commands:

$ ls -l
$ pwd

Scenario #4: The ISO image is corrupted.

When running the loopmount command, the error can appear if the ISO image is corrupted. You can check the file size and the cksum to make sure that the ISO is correct, Or if you used the same ISO image before on another VIOS/LPAR and it doesn't work.

Scenario #5: Not providing the correct options for the loopmount command

The -o flag is the option for mounting the ISO image, miswriting the options correctly can result in the mentioned error. You need to make sure that the correct options are applied

Note: If the error persists after exploring all scenarios, please contact IBM AIX support by creating a new case.

Related Information

Loopmount Command

Mounting ISO image in AIX

Loopback Device Support in AIX

Document Location

Worldwide

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