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0 sats \ 1 reply \ @Brunswick 29 Nov 2022 \ parent \ on: Bounty: resolving Qubes OS issue (inssuficient free space) bitcoin
xen uses partitions for its domUs, just like Linux needs partitions on your drive. When you delete a domU, you are only 'killing' the machine. LVM let's you dynamically create and delete arbitrary partitions without needing to rearrange your disk partition table. When you run the domU creation script, it creates a partition (aka volume) for you based on how large you told it to make the VM drive. When you "delete" a domU you aren't really deleting anything, only killing the process. The volume stays there, and you could mount it manually from dom0 in case there's something on there you need.
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0 sats \ 0 replies \ @crowphale OP 29 Dec 2022
I think I actually need this. One large VM (~30GB) doesn't boot (can't start terminal or anything), but before I delete it, I want to backup some stuff, so it would be great if I could mount that volume from dom0 manually, right?
$ sudo mount /dev/qubes_dom0/vm-crowphale-private-snap crow-mount
mount: wrong fs type, bad option, bad superblock on /dev/mapper/qubes_dom0-vm--crowphale--private--snap,
       missing codepage or helper program, or other error

       In some cases useful info is found in syslog - try
       dmesg | tail or so.
Also posted https://forum.qubes-os.org/t/how-to-mount-vms-logical-volume-from-dom0/15688
Any pointers how to do this?
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