Error While Mounting an ISO Image in Linux: ioctl: LOOP_SET_FD: Invalid argument

I recently received this error while mounting an iso image in a CentOS 5.3 install:

[root@host ~]# mount -t iso9660 -o loop /mnt/glusterfs/ecp-spe-4867.iso /mnt/iso/ ioctl: LOOP_SET_FD: Invalid argument

For more detail:

[root@host ~]# mount -v -t iso9660 -o loop /mnt/glusterfs/ecp-spe-4867.iso /mnt/iso/ mount: going to use the loop device /dev/loop0 ioctl: LOOP_SET_FD: Invalid argument mount: failed setting up loop device

So what could this mean? The confusing error message “ioctl: LOOP_SET_FD: Invalid argument” means that your ISO image is on a filesystem that is not supported for the loopback device on your system. In my case, that was a GlusterFS mount that was hosting the image.

I copied it into another directory on my root ext3 filesystem and it mounted just fine!

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Tagged: cdrom, image, iso, Linux, loopback

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By Dave Drager on June 17, 2009 at 1:22 am

New blog post: Error While Mounting an ISO Image in Linux: ioctl: LOOP_SET_FD: Invalid argument http://bit.ly/w8n9L

One Comment

David

Thanks for your help!!

Posted February 3, 2010 at 4:37 pm | Permalink