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Cleanup dead systemd services before start sysroot.mount

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When kdump failed due to initqueue timeout, the sysroot.mount and other
serivces could be stuck in `start` but `dead` status:

Example output of systemctl:

dev-disk-by\x2duuid-530830d1\x2df2c7\x2d4c9a\x2d9a82\x2d148609097521.device loaded inactive   dead    start
<... snip ...>
squash-root.mount		loaded active     mounted       /squash/root
squash.mount			loaded active     mounted       /squash
sysroot.mount			loaded inactive   dead    start /sysroot
<... snip ...>
dracut-cmdline.service		loaded active     exited        dracut cmdline hook
dracut-initqueue.service	loaded activating start   start dracut initqueue hook
dracut-mount.service		loaded inactive   dead    start dracut mount hook

At this point calling `systemctl start sysroot.mount` will just hang as
systemd will just wait for the services that are stuck in `start`
status. So call `systemctl cancel` here to cancel all pending jobs and
have a clean start for mounting sysroot.

Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Coiby Xu <coxu@redhat.com>
This commit is contained in:
Kairui Song 2021-07-02 03:27:05 +08:00
parent 7dbbb4bb31
commit 2603ba7187
1 changed files with 2 additions and 0 deletions
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2
kdump-lib-initramfs.sh
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@ -227,6 +227,8 @@ dump_to_rootfs()
systemctl start dracut-initqueue
fi
dinfo "Clean up dead systemd services"
systemctl cancel
dinfo "Waiting for rootfs mount, will timeout after 90 seconds"
systemctl start sysroot.mount