This means we can remove the two forward declarations.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
It is only used inside migration.c, and fields on that struct are
accessed all around the place on that file.
Signed-off-by: Juan Quintela <quintela@redhat.com>
We called it from a single place, and always with state !=
MIG_STATE_ACTIVE. Just remove the whole callback. For users of the
notifier, notice that this is exactly the case where they don't care,
we are just freeing the state from previous failed migration (it can't
be a sucessful one, otherwise we would not be running on that machine
in the first place).
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
This function is a bit different of the others that change the state,
in the sense that if migrate_fd_cleanup() returns an error, it set the
status to error, not completed.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Use MIG_STATE_ACTIVE only when migration has really started. Use this
new state to setup migration parameters. Change defines for an
anonymous struct.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Once there, remove all parameters that don't need to be passed to
*start_outgoing_migration() functions
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
I have to move two functions postions to avoid forward declarations
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Make *save_live() return negative values when there is one error, and
updates all callers to check for the error.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Now the field contains the last error name, so rename acordingly.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Now the function returned errno, so it is better the new name.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
make functions propagate errno, instead of just using -EIO. Add a
comment about what are the return value of qemu_savevm_state_iterate().
Signed-off-by: Juan Quintela <quintela@redhat.com>
Instead of having two has_error fields in QEMUFile & QEMUBufferedFile,
reuse the 1st one. Notice that the one in buffered_file is only set
after a file operation.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
buffered_close 's' variable is of type QEMUFileBuffered, and
wait_for_unfreeze() expect to receive a MigrationState, that
'coincidentaly' is s->opaque.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Although migrate_fd_put_buffer() sets MIG_STATE_ERROR if it failed,
since migrate_fd_put_notify() isn't checking error of underlying
QEMUFile, those resources are kept open. This patch checks it and
calls migrate_fd_error() in case of error.
Signed-off-by: Yoshiaki Tamura <tamura.yoshiaki@lab.ntt.co.jp>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Once there, make sure that if we already know that there is one error,
just call migration_fd_cleanup() with the ERROR state.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
QEMUFile * is only intended for migration nowadays. Using it for
anything else just adds pain and a layer of buffers for no good
reason.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
This reverts commit eb60260de0.
Conflicts:
savevm.c
We changed qemu_peek_byte() prototype, just fixed the rejects.
Signed-off-by: Juan Quintela<quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
We add qemu_peek_buffer, that is identical to qemu_get_buffer, just
that it don't update f->buf_index.
We add a paramenter to qemu_peek_byte() to be able to peek more than
one byte.
Once this is done, to see if we have a subsection we look:
- 1st byte is QEMU_VM_SUBSECTION
- 2nd byte is a length, and is bigger than section name
- 3rd element is a string that starts with section_name
So, we shouldn't have false positives (yes, content could still get us
wrong but probabilities are really low).
v2:
- Alex Williamsom found that we could get negative values on index.
- Rework code to fix that part.
- Rewrite qemu_get_buffer() using qemu_peek_buffer()
v3:
- return "done" on error case
v4:
- fix qemu_file_skip() off by one.
Signed-off-by: Juan Quintela <quintela@redhat.com>
This patch will make moving code on next patches and having checkpatch
happy easier.
Signed-off-by: Juan Quintela<quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
We will need on next patch to be able to lookahead on next patch
v2: rename "used" to "pending" (Alex Williams)
Signed-off-by: Juan Quintela<quintela@redhat.com>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
It should be a matter of allowing the transition POSTMIGRATE ->
FINISH_MIGRATE, but it turns out that the VM won't do the
transition the second time because it's already stopped.
So this commit also adds vm_stop_force_state() which performs
the transition even if the VM is already stopped.
While there also allow other states to migrate.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
qemu_savevm_state() has some logic to stop the VM and to (or not to)
resume it. But this seems to be a big noop, as qemu_savevm_state()
is only called by do_savevm() when the VM is already stopped.
So, let's drop qemu_savevm_state()'s stop VM logic.
Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
The user may already have paused the VM before starting the
migration process. If s/he does that, then the state will be
'paused' when we finish the migration process. In that case
we want to transition from 'paused' to 'postmigrate' as the
latter is now the real reason why the VM is stopped.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
