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switch-root: use MS_REC for /run, unless we are soft-rebooting #28497

Merged
merged 2 commits into from
Jul 24, 2023
Merged

switch-root: use MS_REC for /run, unless we are soft-rebooting #28497

merged 2 commits into from
Jul 24, 2023
+53 −10

Commits on Jul 24, 2023

  1. switch-root: use MS_REC for /run, unless we are soft-rebooting 

    There are applications that rely on mounts under /run surviving the
switch from initrd to rootfs, so use MS_REC unless we are soft
rebooting.

Follow-up for 7c764d4

Fixes systemd#28452
    @bluca
    bluca committed Jul 24, 2023
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  2. test: check if we correctly propagate /run mounts during switch root 

    Since 7c764d4 we bind mount certain directories during switch root
instead of moving the mount directly, and for /run we do this without
MS_REC. This, unfortunately, leaves all mounts under /run behind
in the old root, which breaks certain use cases.

See: systemd#28452
    @mrc0mmand @bluca
    mrc0mmand authored and bluca committed Jul 24, 2023
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