they actually take effect. Added behaviour "rename-restart" for debugging
purposes, that renames the domain out of the way, preserving it for debugging,
but starts a new domain too.
Add explicit remove of old domain paths when creating a new domain, to avoid
stale information affecting us (by shutting the domain down, for example).
Signed-off-by: Ewan Mellor <ewan@xensource.com>
contain the frontend domid, not the uuid. The actual functionality is the same,
because the ID is referred to by path level, so the change in semantics is not
a problem.
Signed-off-by: Ewan Mellor <ewan@xensource.com>
transient information regarding a domain. This allows live localhost migration,
which is important for testing migration, and also allows migration when we
have a distributed store. The backend paths in the store now refer to the
frontend domain ID, not its UUID, and blktap has changed to match.
To support this split in the information, the cleanup procedure has been split
to match.
Change the save-restore interface between XendDomain, XendDomainInfo, and
XendCheckpoint, to remove some intermingling, in particular taking XendDomain
out of the loop for the restore procedure.
Improved the recovery procedure to avoid trying to destroy dom0 when recovering.
Added a lock around XendDomain.refresh and one around
XendDomainInfo.refreshShutdown, to improve the behaviour when recreating
domains at startup. There are still races here, so more thought needs to be
given to the locking.
Live reconfiguration of an existing domain is temporarily broken.
Signed-off-by: Ewan Mellor <ewan@xensource.com>
the channel-creation logic into eventChannel, making the EventChannel class
simpler. Remove the closeEventChannel method -- it was simply doing a check
for None, and that isn't enough value to justify the extra method when there
is an EventChannel.close method there too.
Signed-off-by: Ewan Mellor <ewan@xensource.com>
store for the current device configuration, and convert it back into the
s-expression used in the config files and the save files. This means that we
can bring the devices up properly on restore.
Signed-off-by: Ewan Mellor <ewan@xensource.com>
Fix two classes of warnings when debugging of shadow code is enabled:
- The type_info field in pfn_info is a long, so use a %lx format
specifier when printing it.
- Fix a warning about uninitialized use of eff_guest_pte.
Signed-off-by: Michael Vrable <mvrable@cs.ucsd.edu>
but couldn't because the device was not marked as BLKIF_CONNECTED and thus
blkif_queue_request discarded the read request. fix bug #220
Signed-off-by: Vincent Hanquez <vincent@xensource.com>
safe version for drivers to use that is aware of
save/restore. Post-restore notifications are silently
dropped, in the expectation that xenbus will eventually
get round to telling the driver it needs to reconnect.
Signed-off-by: Keir Fraser <keir@xensource.com>
unbind_evtchn_from_xxx. The bind now returns the IRQ
number on success. The unbind takes this as a parameter
instead of the event-channel port. Also, unbind closes
down the underlying event-channel port if it is still
live.
Signed-off-by: Keir Fraser <keir@xensource.com>
and binding IPIs back to the CPU. In some cases, an IPI would be sent
to CPU1 before it had allocated a new evtchn. Moving smp_resume() call
before setting the cpu online fixes this race. This fixes bug #228
(http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=228).
Signed-off-by: Ryan Harper <ryanh@us.ibm.com>
seems to lock up the domU kernel on restore still (can be
pinged but not ssh'ed). This still needs investigation.
Signed-off-by: Keir Fraser <keir@xensource.com>
DevController to tidy up the code there. Change the semantics of
xstransact.list and List to return the empty list rather than None if there
are no entries or the directory is not present, as this is easier to handle
for the client.
Signed-off-by: Ewan Mellor <ewan@xensource.com>
