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Add bootfs.snapshot and bootfs.rollback kernel parameters

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Unlike other filesystems, snapshots and rollbacks of bootfs need to be
done from a rescue environment. This patch makes it possible to snap-
shot or rollback the bootfs simply by specifying bootfs.snapshot or
bootfs.rollback on the kernel command line. The operation will be
performed by dracut just before bootfs is mounted.

Reviewed-by: Antonio Russo <antonio.e.russo@gmail.com> 
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Gregory Bartholomew <gregory.lee.bartholomew@gmail.com>
Closes #10198
This commit is contained in:
gregory-lee-bartholomew
2020-05-29 23:16:08 -05:00
committed by GitHub
parent 3d93161b01
commit 9052e3d70b
6 changed files with 66 additions and 2 deletions
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contrib/dracut/90zfs/.gitignore
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@@ -7,3 +7,5 @@ zfs-lib.sh
zfs-load-key.sh
zfs-needshutdown.sh
zfs-env-bootfs.service
zfs-snapshot-bootfs.service
zfs-rollback-bootfs.service