Hey folks!
Yesterday the os-control01.stg machine was reinstalled as RHEL9. Unfortunately there was a script on there that I forgot to backup. I would like, if possible, to retreive it. The old VM disk is still on the VM server as /dev/vg_guests/os-control01.stg.iad2.fedoraproject.org-el7. I tried to naively mount it but it's a block device, not a partition. I tried to mount it with the offset that fdisk gives me for the root partition: # mount -o offset=$((512*5244928)),other,options,here /dev/vg_guests/os-control01.stg.iad2.fedoraproject.org-el7 /mnt/tmpextract/ mount: /mnt/tmpextract: unknown filesystem type 'LVM2_member'. But as you can see it's an LVM volume so I can't use it directly. I don't want to risk polluting the main LVM setup on the machine, so if know of a way to read files from old VM disks I'm interested. The file I'd like to get is /usr/local/bin/jobs-summary. It's not a huge loss but it's still a few hours of work. And if we find a good way of doing this we may want to add it to our SOPs in case it happens again in the future :-)
Thanks!
Aurélien
On Friday, 29 March 2024 at 10:48, Aurélien Bompard abompard@fedoraproject.org wrote:
Hey folks!
Yesterday the os-control01.stg machine was reinstalled as RHEL9. Unfortunately there was a script on there that I forgot to backup. I would like, if possible, to retreive it. The old VM disk is still on the VM server as /dev/vg_guests/os-control01.stg.iad2.fedoraproject.org-el7. I tried to naively mount it but it's a block device, not a partition. I tried to mount it with the offset that fdisk gives me for the root partition: # mount -o offset=$((512*5244928)),other,options,here /dev/vg_guests/os-control01.stg.iad2.fedoraproject.org-el7 /mnt/tmpextract/ mount: /mnt/tmpextract: unknown filesystem type 'LVM2_member'. But as you can see it's an LVM volume so I can't use it directly. I don't want to risk polluting the main LVM setup on the machine, so if know of a way to read files from old VM disks I'm interested. The file I'd like to get is /usr/local/bin/jobs-summary. It's not a huge loss but it's still a few hours of work. And if we find a good way of doing this we may want to add it to our
Try guestfish, that should do the job.
# guestfish --ro -a /dev/vg_guests/os-control01.stg.iad2.fedoraproject.org-el7 -i
<fs> ll /usr/local/bin/jobs-summary <fs> copy-out /usr/local/bin/jobs-summary /tmp
I've extracted the file for you on vmhost-x86-11 in /tmp
-rw-r--r--. 1 root root 4499 Mar 29 10:33 /tmp/jobs-summary
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Aurélien Bompard -
darknao