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| author | Ian Campbell <ian.campbell@citrix.com> | 2010-09-07 19:08:11 +0100 |
|---|---|---|
| committer | Ian Campbell <ian.campbell@citrix.com> | 2010-09-07 19:08:11 +0100 |
| commit | 00a4b65f8534c9e6521eab2e6ce796ae36037774 (patch) | |
| tree | 6c3494e0dcb6f1e7214becfd7fe88772d0d45e17 /tools/libxc/xg_save_restore.h | |
| parent | ec7b9a1b9b2a935fa322eca98d95741ff6d162bb (diff) | |
| download | xen-00a4b65f8534c9e6521eab2e6ce796ae36037774.tar.gz xen-00a4b65f8534c9e6521eab2e6ce796ae36037774.tar.bz2 xen-00a4b65f8534c9e6521eab2e6ce796ae36037774.zip | |
libxc: provide notification of final checkpoint to restore end
When the restore code sees this notification it will restore the
currently in-progress checkpoint when it completes.
This allows the restore end to finish up without waiting for a
spurious timeout on the receive fd and thereby avoids unnecessary
error logging in the case of a successful migration or restore.
In the normal migration or restore case the first checkpoint is always
the last. For a rolling checkpoint (such as Remus) the notification is
currently unused but could be used in the future for example to
provide a controlled failover for reasons other than error
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Brendan Cully <brendan@cs.ubc.ca>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Diffstat (limited to 'tools/libxc/xg_save_restore.h')
| -rw-r--r-- | tools/libxc/xg_save_restore.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/libxc/xg_save_restore.h b/tools/libxc/xg_save_restore.h index a16e6f3b7c..0bc958344c 100644 --- a/tools/libxc/xg_save_restore.h +++ b/tools/libxc/xg_save_restore.h @@ -131,6 +131,7 @@ #define XC_SAVE_ID_TMEM_EXTRA -6 #define XC_SAVE_ID_TSC_INFO -7 #define XC_SAVE_ID_HVM_CONSOLE_PFN -8 /* (HVM-only) */ +#define XC_SAVE_ID_LAST_CHECKPOINT -9 /* Commit to restoring after completion of current iteration. */ /* ** We process save/restore/migrate in batches of pages; the below |