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Properly use the Dracut cleanup hook to order pool shutdown

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When Dracut starts up, it needs to determine whether a pool will remain
"hanging open" before the system shuts off. In such a case, then the
code to clean up the pool (using the previous export -F work) must
be invoked. Since Dracut has had a recent change that makes
mount-zfs.sh simply not run when the root dataset is already mounted,
we must use the cleanup hook to order Dracut to do shutdown cleanup.

Important note: this code will not accomplish its stated goal until this
bug is fixed: https://bugzilla.redhat.com/show_bug.cgi?id=1385432

That bug impacts more than just ZFS. It impacts LUKS, dmraid, and
unmount during poweroff. It is a Fedora-wide bug.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Manuel Amador (Rudd-O) <rudd-o@rudd-o.com>
Closes #5287
This commit is contained in:
Rudd-O
2016-10-17 18:51:15 +00:00
committed by Brian Behlendorf
parent fea33e4e50
commit f8e87e205c
4 changed files with 13 additions and 2 deletions
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contrib/dracut/90zfs/Makefile.am
+2
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@@ -5,6 +5,7 @@ pkgdracut_SCRIPTS = \
mount-zfs.sh \
parse-zfs.sh \
zfs-generator.sh \
zfs-needshutdown.sh \
zfs-lib.sh
EXTRA_DIST = \
@@ -13,6 +14,7 @@ EXTRA_DIST = \
$(top_srcdir)/contrib/dracut/90zfs/mount-zfs.sh.in \
$(top_srcdir)/contrib/dracut/90zfs/parse-zfs.sh.in \
$(top_srcdir)/contrib/dracut/90zfs/zfs-generator.sh.in \
$(top_srcdir)/contrib/dracut/90zfs/zfs-needshutdown.sh.in \
$(top_srcdir)/contrib/dracut/90zfs/zfs-lib.sh.in
$(pkgdracut_SCRIPTS):%:%.in