Unmount everything under /mnt before zpool export, not just chroot dirs #43

Merged

beatzaplenty merged 1 commits from worktree-baremetal-esp-unmount into main

2026-07-22 04:30:06 +00:00

Author	SHA1	Message	Date
beatzaplenty	619324589a	Unmount everything under /mnt before zpool export, not just the chroot dirs Check NixOS configurations / eval-hosts (pull_request) Successful in 10m28s Details The previous fix (#42) only unmounted /mnt/{dev,proc,sys,run}, but disko also mounts the ESP at /mnt/boot (modules/disko/baremetal.nix) -- another nested mount blocking ZFS from unmounting its own root dataset at /mnt the same way. Confirmed live: zpool export still failed with "cannot unmount '/mnt': pool or dataset busy" after the chroot-only fix. Replace the manual dev/proc/sys/run list with a single recursive `umount -R /mnt`, which clears everything nested under /mnt -- current and future mountpoints alike -- rather than needing to keep enumerating whatever nixos-install/disko happen to leave mounted.	2026-07-22 04:23:42 +00:00

Author

SHA1

Message

Date

beatzaplenty

619324589a

Unmount everything under /mnt before zpool export, not just the chroot dirs

Check NixOS configurations / eval-hosts (pull_request) Successful in 10m28s

Details

The previous fix (#42) only unmounted /mnt/{dev,proc,sys,run}, but disko
also mounts the ESP at /mnt/boot (modules/disko/baremetal.nix) -- another
nested mount blocking ZFS from unmounting its own root dataset at /mnt
the same way. Confirmed live: zpool export still failed with "cannot
unmount '/mnt': pool or dataset busy" after the chroot-only fix.

Replace the manual dev/proc/sys/run list with a single recursive
`umount -R /mnt`, which clears everything nested under /mnt -- current
and future mountpoints alike -- rather than needing to keep enumerating
whatever nixos-install/disko happen to leave mounted.

2026-07-22 04:23:42 +00:00