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Line 68: − + − + − + − == Old days ==+ − − For now the same behavior is configured with the <code>--ext-mount-map KEY:VAL</code> option. Soon this option will be [[deprecation|deprecated]]. − − [[Category:HOWTO]] − [[Category:External]] − − === Sharing for external bindmounts === Line 133:
Line 126: − + + + + + − Before [https://github.com/checkpoint-restore/criu/pull/906 #906] we were detecting this external/internal sharing state for auto detected external mounts only, but we need it for manual external mounts too. Moreover this also applies to manual external slave mounts they can be external/internal slaves too.+ − So we detect that the mount is from external sharing if in mount namespace of CRIU there are mounts of same shared group and also we detect that the mount is from external slavery if there is no master mount for it in CT mount namespaces.+ + + +
don't make "Sharing" the subsection of "old days"; minor English fixes
criu dump ... --external 'mnt[]'
criu dump ... --external 'mnt[]'
Auto detect and dump all external bind mounts.
Auto-detect and dump all external bind mounts.
criu dump ... --external 'mnt[]:s'
criu dump ... --external 'mnt[]:s'
Auto detect and dump all external bind mounts, including the shared ones.
Auto-detect and dump all external bind mounts, including the shared ones.
criu dump ... --external 'mnt[]:sm'
criu dump ... --external 'mnt[]:sm'
Auto detect and dump all external bind mounts, including the shared and the master ones.
Auto-detect and dump all external bind mounts, including the shared and the master ones.
== Sharing ==
External bindmounts can both have internal/external sharing. Please see the example:
External bindmounts can both have internal/external sharing. Please see the example:
# 899 843 0:5 / /proc rw,nosuid,nodev,noexec,relatime - proc proc rw
# 899 843 0:5 / /proc rw,nosuid,nodev,noexec,relatime - proc proc rw
Mounts 812 (on host) and 861 (in container) have the same sharing (shared group) - external sharing and mount 898 has it's own local shared group - internal sharing.
Mounts 812 (on the host) and 861 (in a container) have the same sharing (shared group) - external sharing and mount 898 has it's own local shared group - internal sharing.
Before [https://github.com/checkpoint-restore/criu/pull/906 #906] we were detecting this external/internal sharing state for auto-detected external mounts only, but we need it for manual external mounts too. Moreover, this also applies to manual external slave mounts they can be external/internal slaves too.
So we detect that the mount is from external sharing if in mount namespace of CRIU there are mounts of the same shared group and also we detect that the mount is from external slavery if there is no master mount for it in CT mount namespaces.
== Old days ==
For now the same behavior is configured with the <code>--ext-mount-map KEY:VAL</code> option. Soon this option will be [[deprecation|deprecated]].
[[Category:HOWTO]]
[[Category:External]]