This is thin lvm's Achilles heel. In Qubes' case there is no un-allocated space in the volume group (the installer created the pool to occupy all the remaining space) so you can't simply enlarge the metadata size.

What you can do (something I've done myself) is to take advantage of the unnecessarily huge swap volume created by the installer. You shouldn't need more than about 1-1.5GB for dom0, so if swap is like 8GB you can easily reduce it to make room for more tmeta:

# swapoff -a
# lvresize -L -200M qubes_dom0/swap
# mkswap /dev/qubes_dom0/swap
# swapon -a
# lvextend --poolmetadatasize +200M qubes_dom0/pool00

--

Chris Laprise, tas...@posteo.net
https://github.com/tasket
https://twitter.com/ttaskett
PGP: BEE2 20C5 356E 764A 73EB  4AB3 1DC4 D106 F07F 1886

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