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Add --ignore-rootfs option for checkpoint/restore

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The newly added functionality to include the container's root
file-system changes into the checkpoint archive can now be explicitly
disabled. Either during checkpoint or during restore.

If a container changes a lot of files during its runtime it might be
more effective to migrated the root file-system changes in some other
way and to not needlessly increase the size of the checkpoint archive.

If a checkpoint archive does not contain the root file-system changes
information it will automatically be skipped. If the root file-system
changes are part of the checkpoint archive it is also possible to tell
Podman to ignore these changes.

Signed-off-by: Adrian Reber <areber@redhat.com>
This commit is contained in:
Adrian Reber
2019-06-27 07:56:39 +00:00
parent 1a32074884
commit 05549e8b29
10 changed files with 79 additions and 35 deletions
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10
docs/podman-container-checkpoint.1.md
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@ -42,7 +42,15 @@ connections.
Export the checkpoint to a tar.gz file. The exported checkpoint can be used
to import the container on another system and thus enabling container live
migration.
migration. This checkpoint archive also includes all changes to the container's
root file-system, if not explicitly disabled using **--ignore-rootfs**
**--ignore-rootfs**
This only works in combination with **--export, -e**. If a checkpoint is
exported to a tar.gz file it is possible with the help of **--ignore-rootfs**
to explicitly disable including changes to the root file-system into
the checkpoint archive file.
## EXAMPLE