Re: how to mount a bootable VM image file?

[Gregory Farnum <gfarnum@xxxxxxxxxx>]

On Wednesday, December 2, 2015, Judd Maltin <judd@xxxxxxxxxxxxxx> wrote:

I'm using OpenStack to create VMs.  They're KVM VMs, and I can see all the authentication information I need on the process tree.  I want to mount this bootable image on the hypervizor node to access its filesystem and fix a file I messed up in /etc/ so I can get the VM to boot.

[root@ceph mnt]# mount -t ceph 192.168.170.53:6789:/volumes/d02ef718-bb44-4316-9e93-5979396921da_disk /mnt/image -o 'name=volumes,secret=AQDG7fBVqH3/LxAA8pQ0IF5LKQzAPYKTv8SvfQ=='
mount: 192.168.170.53:6789:/volumes/d02ef718-bb44-4316-9e93-5979396921da_disk: can't read superblock

How can I find and use the partition inside this raw, bootable file image?

You've probably created it using features that the kernel client you have installed doesn't understand. You'd need to either use a newer kernel or (more likely) just hook it up to a VM with QEMU.

-Greg

 

Thanks folks,

-judd

--

Judd Maltin
T: 917-882-1270

Of Life immense in passion, pulse, and power,
Cheerful—for freest action form’d, under the laws divine,
The Modern Man I sing. -Walt Whitman

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