From: Dr. David Alan Gilbert dgilb...@redhat.com
Flip many fprintf's to error_report
Add lots of DPRINTF debug in qemu_loadvm*
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
savevm.c | 23 +--
1 file changed, 17 insertions(+), 6 deletions(-)
diff --git
From: Dr. David Alan Gilbert dgilb...@redhat.com
Add state variable showing current incoming postcopy state.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
include/migration/migration.h | 8 ++
include/sysemu/sysemu.h | 19 +++
savevm.c | 324
From: Dr. David Alan Gilbert dgilb...@redhat.com
Tweak the end of migration cleanup; we don't want to close stuff down
at the end of the main stream, since the postcopy is still sending pages
on the other thread.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
migration.c | 23
From: Dr. David Alan Gilbert dgilb...@redhat.com
Wire up more of the handlers for the commands on the destination side,
in particular loadvm_postcopy_ram_handle_run now has enough to start the
guest running.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
savevm.c | 63
From: Dr. David Alan Gilbert dgilb...@redhat.com
Switch to postcopy if:
1) There's still a significant amount to transfer
2) Postcopy is enabled
3) migrate_postcopy_start has been issued.
and change the cleanup at the end of migration to match.
Signed-off-by: Dr. David Alan Gilbert
From: Dr. David Alan Gilbert dgilb...@redhat.com
The loading of a device state (during postcopy) may access guest
memory that's still on the source machine and thus might need
a page fill; split off a separate thread that handles the incoming
page data so that the original incoming migration code
From: Dr. David Alan Gilbert dgilb...@redhat.com
Open the return path before migration thread creation.
Since this can fail, guard the fd cleanup so it doesn't
try and destroy the potentially non-existent thread.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
From: Dr. David Alan Gilbert dgilb...@redhat.com
postcopy_start:
Perform all the initialisation associated with starting up postcopy
mode from the source.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
migration.c | 85
From: Dr. David Alan Gilbert dgilb...@redhat.com
When transmitting RAM pages, consume pages that have been queued by
MIG_RPCOMM_REQPAGE commands and send them ahead of normal page scanning.
Note:
a) After a queued page the linear walk carries on from after the
unqueued page; there is a
From: Dr. David Alan Gilbert dgilb...@redhat.com
postcopy_place_page (etc) provide a way for postcopy to place a page
into guests memory atomically (using the new remap_anon_pages syscall).
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
include/migration/migration.h| 1 +
From: Dr. David Alan Gilbert dgilb...@redhat.com
Once we're in postcopy the source processors are stopped and memory
shouldn't change any more, so there's no need to look at the dirty
map.
There are two notes to this:
1) If we do resync and a page had changed then the page would get
sent
From: Dr. David Alan Gilbert dgilb...@redhat.com
userfaultfd is a Linux syscall that gives an fd that receives a stream
of notifications of accesses to pages marked as MADV_USERFAULT, and
allows the program to acknowledge those stalls and tell the accessing
thread to carry on.
Signed-off-by: Dr.
From: Dr. David Alan Gilbert dgilb...@redhat.com
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
include/migration/migration.h | 3 +++
postcopy-ram.c| 23 +++
2 files changed, 26 insertions(+)
diff --git a/include/migration/migration.h
From: Dr. David Alan Gilbert dgilb...@redhat.com
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
arch_init.c | 11 +++
include/migration/migration.h | 1 +
migration.c | 1 +
3 files changed, 13 insertions(+)
diff --git a/arch_init.c
From: Dr. David Alan Gilbert dgilb...@redhat.com
Add back the PCIe config capabilities on XHCI cards in non-PCIe slots,
but only for machine types before 2.1.
This fixes a migration incompatibility in the XHCI PCI devices
caused by:
058fdcf52cdbf57b67e7 - xhci: add endpoint cap on express bus
From: Dr. David Alan Gilbert dgilb...@redhat.com
Hi,
This patch-pair adds the QEMUSizedBuffer based in-memory QEMUFile
written by Stefan Berger and Joel Schopp. I've made some
fixes and modified the existing test-vmstate to use it for some test cases.
While there's nothing other than test
From: Dr. David Alan Gilbert dgilb...@redhat.com
Modify some of tests/test-vmstate.c to use the in memory file based
on QEMUSizedBuffer to provide basic testing of QEMUSizedBuffer and
the associated memory backed QEMUFile type.
Only some of the tests are changed so that the fd backed QEMUFile is
From: Dr. David Alan Gilbert dgilb...@redhat.com
This is based on Stefan and Joel's patch that creates a QEMUFile that goes
to a memory buffer; from:
http://lists.gnu.org/archive/html/qemu-devel/2013-03/msg05036.html
Using the QEMUFile interface, this patch adds support functions for
operating
From: Dr. David Alan Gilbert dgilb...@redhat.com
Modify some of tests/test-vmstate.c to use the in memory file based
on QEMUSizedBuffer to provide basic testing of QEMUSizedBuffer and
the associated memory backed QEMUFile type.
Only some of the tests are changed so that the fd backed QEMUFile is
From: Dr. David Alan Gilbert dgilb...@redhat.com
Hi,
This patch-pair adds the QEMUSizedBuffer based in-memory QEMUFile
written by Stefan Berger and Joel Schopp. I've made some
fixes and modified the existing test-vmstate to use it for some test cases.
While there's nothing other than test
From: Dr. David Alan Gilbert dgilb...@redhat.com
This is based on Stefan and Joel's patch that creates a QEMUFile that goes
to a memory buffer; from:
http://lists.gnu.org/archive/html/qemu-devel/2013-03/msg05036.html
Using the QEMUFile interface, this patch adds support functions for
operating
From: Dr. David Alan Gilbert dgilb...@redhat.com
This patch-pair adds the QEMUSizedBuffer based in-memory QEMUFile
written by Stefan Berger and Joel Schopp. I've made some
fixes and modified the existing test-vmstate to use it for some test cases.
While there's nothing other than test cases
From: Dr. David Alan Gilbert dgilb...@redhat.com
This is based on Stefan and Joel's patch that creates a QEMUFile that goes
to a memory buffer; from:
http://lists.gnu.org/archive/html/qemu-devel/2013-03/msg05036.html
Using the QEMUFile interface, this patch adds support functions for
operating
From: Dr. David Alan Gilbert dgilb...@redhat.com
Modify some of tests/test-vmstate.c to use the in memory file based
on QEMUSizedBuffer to provide basic testing of QEMUSizedBuffer and
the associated memory backed QEMUFile type.
Only some of the tests are changed so that the fd backed QEMUFile is
From: Dr. David Alan Gilbert dgilb...@redhat.com
Hi,
This is the 4th cut of my version of postcopy; it is designed for use with
the Linux kernel additions just posted by Andrea Arcangeli here:
http://marc.info/?l=linux-kernelm=141235633015100w=2
(Note: This is a new version compared to my
From: Dr. David Alan Gilbert dgilb...@redhat.com
* Please comment on separate thread for this QEMUSziedBuffer patch *
Modify some of tests/test-vmstate.c to use the in memory file based
on QEMUSizedBuffer to provide basic testing of QEMUSizedBuffer and
the associated memory backed QEMUFile type.
From: Dr. David Alan Gilbert dgilb...@redhat.com
and use it in loadvm_state.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
include/migration/qemu-file.h | 2 ++
qemu-file.c | 15 +++
savevm.c | 18 ++
3 files
From: Dr. David Alan Gilbert dgilb...@redhat.com
* Please comment on separate thread for this QEMUSizedBuffer patch *
This is based on Stefan and Joel's patch that creates a QEMUFile that goes
to a memory buffer; from:
http://lists.gnu.org/archive/html/qemu-devel/2013-03/msg05036.html
Using
From: Dr. David Alan Gilbert dgilb...@redhat.com
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
docs/migration.txt | 189 +
1 file changed, 189 insertions(+)
diff --git a/docs/migration.txt b/docs/migration.txt
index
From: Dr. David Alan Gilbert dgilb...@redhat.com
Improve the existing DPRINTF macros in migration.c and arch_init
by:
1) Making them go to stderr rather than stdout (so you can run with
-nographic and redirect your debug to a file)
2) Making them print the ms time with each debug - useful for
From: Dr. David Alan Gilbert dgilb...@redhat.com
There are currently lots of pieces of incoming migration state scattered
around, and postcopy is adding more, and it seems better to try and keep
it together.
allocate MIS in process_incoming_migration_co
Signed-off-by: Dr. David Alan Gilbert
From: Dr. David Alan Gilbert dgilb...@redhat.com
The migration code generally is built target-independent, however
there are a few places where knowing the target page size would
avoid artificially moving stuff into arch_init.
Provide 'qemu_target_page_bits()' that returns TARGET_PAGE_BITS
to
From: Dr. David Alan Gilbert dgilb...@redhat.com
check the return value of the function it calls and error if it's non-0
Fixup qemu_rdma_init_one_block that is the only current caller,
and __qemu_rdma_add_block the only function it calls using it.
Pass the name of the ramblock to the function;
From: Dr. David Alan Gilbert dgilb...@redhat.com
Add QEMUFile interface to allow a socket to be 'shut down' - i.e. any
reads/writes will fail (and any blocking read/write will be woken).
Add qemu_socket wrapper to let OS dependencies be extracted out.
Signed-off-by: Dr. David Alan Gilbert
From: Dr. David Alan Gilbert dgilb...@redhat.com
The return path uses a non-blocking fd so as not to block waiting
for the (possibly broken) destination to finish returning a message,
however we still want outbound data to behave in the same way and block.
Signed-off-by: Dr. David Alan Gilbert
From: Dr. David Alan Gilbert dgilb...@redhat.com
Postcopy needs a method to send messages from the destination back to
the source, this is the 'return path'.
Wire it up for 'socket' QEMUFile's using a dup'd fd.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
From: Dr. David Alan Gilbert dgilb...@redhat.com
Create QEMU_VM_COMMAND section type for sending commands from
source to destination. These commands are not intended to convey
guest state but to control the migration process.
For use in postcopy.
Signed-off-by: Dr. David Alan Gilbert
From: Dr. David Alan Gilbert dgilb...@redhat.com
Add two src-dest commands:
* OPENRP - To request that the destination open the return path
* REQACK - Request an acknowledge from the destination
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
include/migration/migration.h |
From: Dr. David Alan Gilbert dgilb...@redhat.com
Add migrate_send_rp_message to send a message from destination to source along
the return path.
(It uses a mutex to let it be called from multiple threads)
Add migrate_send_rp_shut to send a 'shut' message to indicate
the destination is
From: Dr. David Alan Gilbert dgilb...@redhat.com
Add state variable showing current incoming postcopy state.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
include/migration/migration.h | 8 +
include/sysemu/sysemu.h | 20 +++
savevm.c | 335
From: Dr. David Alan Gilbert dgilb...@redhat.com
Open a return path, and handle messages that are received upon it.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
include/migration/migration.h | 10 +++
migration.c | 181
From: Dr. David Alan Gilbert dgilb...@redhat.com
Misses out lines that are all the expected value so the output
can be quite compact depending on the circumstance.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
arch_init.c | 39
From: Dr. David Alan Gilbert dgilb...@redhat.com
On receiving MIG_RPCOMM_REQPAGES look up the address and
queue the page.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
arch_init.c | 52 +++
include/migration/migration.h |
From: Dr. David Alan Gilbert dgilb...@redhat.com
QEMU_VM_CMD_PACKAGED is a migration command that allows a chunk
of migration stream to be sent in one go, and be received by
a separate instance of the loadvm loop while not interacting
with the migration stream.
This is used by postcopy to load
From: Dr. David Alan Gilbert dgilb...@redhat.com
Flip many fprintf's to error_report
Add lots of DPRINTF debug in qemu_loadvm*
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
savevm.c | 23 +--
1 file changed, 17 insertions(+), 6 deletions(-)
diff --git
From: Dr. David Alan Gilbert dgilb...@redhat.com
Use that to split the qemu_savevm_state_pending counts into postcopiable
and non-postcopiable amounts
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
arch_init.c | 7 +++
include/migration/vmstate.h | 2 +-
From: Dr. David Alan Gilbert dgilb...@redhat.com
I've seen it go negative once during dev, it shouldn't
happen.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
arch_init.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch_init.c b/arch_init.c
index a945990..2f4345a 100644
From: Dr. David Alan Gilbert dgilb...@redhat.com
Once postcopy is enabled (with migrate_set_capability), the migration
will still start on precopy mode. To cause a transition into postcopy
the:
migrate_start_postcopy
command must be issued. Postcopy will start sometime after this
(when it's
From: Dr. David Alan Gilbert dgilb...@redhat.com
Prior to the start of postcopy, ensure that everything that will
be transferred later is a whole host-page in size.
This is accomplished by discarding partially transferred host pages
and marking any that are partially dirty as fully dirty.
From: Dr. David Alan Gilbert dgilb...@redhat.com
Postcopy needs to have two migration streams loading concurrently;
one from memory (with the device state) and the other from the fd
with the memory transactions.
Split the core of qemu_loadvm_state out so we can use it for both.
Allow the inner
From: Dr. David Alan Gilbert dgilb...@redhat.com
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
arch_init.c | 11
include/migration/migration.h| 1 +
include/migration/postcopy-ram.h | 12 +
migration.c | 1 +
From: Dr. David Alan Gilbert dgilb...@redhat.com
'MIG_STATE_POSTCOPY_ACTIVE' is entered after migrate_start_postcopy
'migration_postcopy_phase' is provided for other sections to know if
they're in postcopy.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
From: Dr. David Alan Gilbert dgilb...@redhat.com
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
Reviewed-by: Eric Blake ebl...@redhat.com
---
include/migration/migration.h | 1 +
migration.c | 9 +
qapi-schema.json | 6 +-
3 files changed, 15
From: Dr. David Alan Gilbert dgilb...@redhat.com
The loading of a device state (during postcopy) may access guest
memory that's still on the source machine and thus might need
a page fill; split off a separate thread that handles the incoming
page data so that the original incoming migration code
From: Dr. David Alan Gilbert dgilb...@redhat.com
Where postcopy is preceeded by a period of precopy, the destination will
have received pages that may have been dirtied on the source after the
page was sent. The destination must throw these pages away before
starting it's CPUs.
Maintain a
From: Dr. David Alan Gilbert dgilb...@redhat.com
When transmitting RAM pages, consume pages that have been queued by
MIG_RPCOMM_REQPAGE commands and send them ahead of normal page scanning.
Note:
a) After a queued page the linear walk carries on from after the
unqueued page; there is a
From: Dr. David Alan Gilbert dgilb...@redhat.com
Tweak the end of migration cleanup; we don't want to close stuff down
at the end of the main stream, since the postcopy is still sending pages
on the other thread.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
migration.c | 23
From: Dr. David Alan Gilbert dgilb...@redhat.com
Suspend to file is very much like a migrate, and it makes life
easier if we have the Migration state available, so initialise it
in the savevm.c code for suspending.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
From: Dr. David Alan Gilbert dgilb...@redhat.com
In postcopy, the destination guest is running at the same time
as it's receiving pages; as we receive new pages we must put
them into the guests address space atomically to avoid a running
CPU accessing a partially written page.
Use the helpers in
From: Dr. David Alan Gilbert dgilb...@redhat.com
Add MIG_RPCOMM_REQPAGES command on Return path for the postcopy
destination to request a page from the source.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
include/migration/migration.h | 3 ++
migration.c | 74
From: Dr. David Alan Gilbert dgilb...@redhat.com
Provide a check to see if the OS we're running on has all the bits
needed for postcopy.
Creates postcopy-ram.c which will get most of the other helpers we need.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
Makefile.objs
From: Dr. David Alan Gilbert dgilb...@redhat.com
Postcopy sends RAMBlock names and offsets over the wire (since it can't
rely on the order of ramaddr being the same), and it starts out with
HVA fault addresses from the kernel.
qemu_ram_block_from_host translates a HVA into a RAMBlock, an offset
From: Dr. David Alan Gilbert dgilb...@redhat.com
When postcopy calls qemu_savevm_state_complete it's not really
the end of migration, so skip:
a) Finishing postcopiable iterative devices - they'll carry on
b) The termination byte on the end of the stream.
We then also add:
From: Dr. David Alan Gilbert dgilb...@redhat.com
userfaultfd is a Linux syscall that gives an fd that receives a stream
of notifications of accesses to pages marked as MADV_USERFAULT, and
allows the program to acknowledge those stalls and tell the accessing
thread to carry on.
Signed-off-by: Dr.
From: Dr. David Alan Gilbert dgilb...@redhat.com
The PMI holds the state of each page on the incoming side,
so that we can tell if the page is missing, already received
or there is a request outstanding for it.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
From: Dr. David Alan Gilbert dgilb...@redhat.com
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
include/migration/migration.h| 2 ++
include/migration/postcopy-ram.h | 6 +
postcopy-ram.c | 49 +++-
savevm.c
From: Dr. David Alan Gilbert dgilb...@redhat.com
Rework the migration thread to setup and start postcopy.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
include/migration/migration.h | 3 +
migration.c | 201 ++
2 files
From: Dr. David Alan Gilbert dgilb...@redhat.com
Once we're in postcopy the source processors are stopped and memory
shouldn't change any more, so there's no need to look at the dirty
map.
There are two notes to this:
1) If we do resync and a page had changed then the page would get
sent
From: Dr. David Alan Gilbert dgilb...@redhat.com
Wire up more of the handlers for the commands on the destination side,
in particular loadvm_postcopy_ram_handle_run now has enough to start the
guest running.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
savevm.c | 63
From: Dr. David Alan Gilbert dgilb...@redhat.com
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
include/migration/migration.h | 3 +++
postcopy-ram.c| 23 +++
2 files changed, 26 insertions(+)
diff --git a/include/migration/migration.h
From: Dr. David Alan Gilbert dgilb...@redhat.com
postcopy_place_page (etc) provide a way for postcopy to place a page
into guests memory atomically (using the new remap_anon_pages syscall).
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
include/migration/migration.h| 2 +
From: Dr. David Alan Gilbert dgilb...@redhat.com
Fix the example trace configure option.
Update the text to say that multiple backends are allowed and what
happens when multiple backends are enabled.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
docs/tracing.txt | 6 +++---
1
From: Dr. David Alan Gilbert dgilb...@redhat.com
Modify some of tests/test-vmstate.c to use the in memory file based
on QEMUSizedBuffer to provide basic testing of QEMUSizedBuffer and
the associated memory backed QEMUFile type.
Only some of the tests are changed so that the fd backed QEMUFile is
From: Dr. David Alan Gilbert dgilb...@redhat.com
This is based on Stefan and Joel's patch that creates a QEMUFile that goes
to a memory buffer; from:
http://lists.gnu.org/archive/html/qemu-devel/2013-03/msg05036.html
Using the QEMUFile interface, this patch adds support functions for
operating
From: Dr. David Alan Gilbert dgilb...@redhat.com
This patch-pair adds the QEMUSizedBuffer based in-memory QEMUFile
written by Stefan Berger and Joel Schopp. I've made some
fixes and modified the existing test-vmstate to use it for some test cases.
While there's nothing other than test cases
From: Dr. David Alan Gilbert dgilb...@redhat.com
This looks like an old merge error and should have no effect.
(Build tested only)
Found by Coccinelle using Julia Lawall's script:
https://lkml.org/lkml/2014/8/23/128
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
From: Dr. David Alan Gilbert dgilb...@redhat.com
The migration code now occupies a fair chunk of the top level .c
files, it seems time to give it it's own directory.
I've not touched:
arch_init.c - that's mostly RAM migration but has a few random other
bits
savevm.c-
From: Dr. David Alan Gilbert dgilb...@redhat.com
The general feeling is that having migration/migration-blah
is overkill.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
migration/Makefile.objs | 8
migration/{block-migration.c = block.c} | 0
From: Dr. David Alan Gilbert dgilb...@redhat.com
This is a small set of patches that shuffle migration code
around, but doesn't change the behaviour:
1) Move a lot of the migration source into a separate 'migration' directory
Note this moves a lot of files around, git format-patch -M -B
From: Dr. David Alan Gilbert dgilb...@redhat.com
Now we've got multiple QEMUFile source files, some of them need
access to things that were defined in qemu-file.c, so create
a -internal header for them.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
migration/qemu-file-internal.h
From: Dr. David Alan Gilbert dgilb...@redhat.com
The splitting of qemu-file and addition of the buffered file landed
at the same time; so now split the buffered file code out.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
migration/Makefile.objs | 2 +-
From: Dr. David Alan Gilbert dgilb...@redhat.com
This pair of patches fixes a problem where IDE/ATAPI cdrom
reads get lost/corrupted over migration.
The first of the patches (restore atapi_dma flag) is
a simple fix that I think is safe; it no longer causes
corruption in the case we saw, but does
From: Dr. David Alan Gilbert dgilb...@redhat.com
(With the previous atapi_dma flag recovery)
If migration happens between the ATAPI command being written and the
bmdma being started, the DMA is dropped. Eventually the guest times
out and recovers, but that can take many seconds.
(This is rare,
From: Dr. David Alan Gilbert dgilb...@redhat.com
If a migration happens just after the guest has kicked
off an ATAPI command and kicked off DMA, we lose the atapi_dma
flag, and the destination tries to complete the command as PIO
rather than DMA. This upsets Linux; modern libata based kernels
From: Dr. David Alan Gilbert dgilb...@redhat.com
My previous patches migrated the migration code into migration/
but didn't update MAINTAINERS.
Note that does mean that the owner for block-migration.c
changes, but I'll ask block people what they want to do.
Signed-off-by: Dr. David Alan Gilbert
From: Dr. David Alan Gilbert dgilb...@redhat.com
Mainly to make it less likely to conflict during merges.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
include/qemu/typedefs.h | 105 +++-
1 file changed, 50 insertions(+), 55
From: Dr. David Alan Gilbert dgilb...@redhat.com
This is a small set of patches that shuffle migration code
around, but doesn't change the behaviour:
1) Move a lot of the migration source into a separate 'migration' directory
Note this moves a lot of files around, git format-patch -M -B
From: Dr. David Alan Gilbert dgilb...@redhat.com
My previous patches migrated the migration code into migration/
but didn't update MAINTAINERS.
Note that does mean that the owner for block-migration.c
changes, but I'll ask block people what they want to do.
Signed-off-by: Dr. David Alan Gilbert
From: Dr. David Alan Gilbert dgilb...@redhat.com
The splitting of qemu-file and addition of the buffered file landed
at the same time; so now split the buffered file code out.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
migration/Makefile.objs | 2 +-
From: Dr. David Alan Gilbert dgilb...@redhat.com
The migration code now occupies a fair chunk of the top level .c
files, it seems time to give it it's own directory.
I've not touched:
arch_init.c - that's mostly RAM migration but has a few random other
bits
savevm.c-
From: Dr. David Alan Gilbert dgilb...@redhat.com
The general feeling is that having migration/migration-blah
is overkill.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
migration/Makefile.objs | 8
migration/{block-migration.c = block.c} | 0
From: Dr. David Alan Gilbert dgilb...@redhat.com
Now we've got multiple QEMUFile source files, some of them need
access to things that were defined in qemu-file.c, so create
a -internal header for them.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
migration/qemu-file-internal.h
From: Dr. David Alan Gilbert dgilb...@redhat.com
Turn all the D/DD/DDDPRINTFs into trace events
Turn most of the fprintf(stderr, into error_report
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
migration/rdma.c | 333 ---
From: Dr. David Alan Gilbert dgilb...@redhat.com
When debugging migration it's useful to know the PID of
each trace message so you can figure out if it came from the source
or the destination.
Printing the time makes it easy to do latency measurements or timings
between trace points.
From: Dr. David Alan Gilbert dgilb...@redhat.com
Mostly on the load side, so that when we get a complaint about
a migration failure we can figure out what it didn't like.
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
migration/vmstate.c | 22 +++---
savevm.c
From: Dr. David Alan Gilbert dgilb...@redhat.com
Convert a bunch of fprintfs to error_reports
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
migration/vmstate.c | 7 ---
savevm.c| 21 +++--
2 files changed, 15 insertions(+), 13 deletions(-)
diff
From: Dr. David Alan Gilbert dgilb...@redhat.com
Tidy up some old printfs
Add some more error_reports that previously just failed with invalid.
Add lots and lots of tracing.
Dr. David Alan Gilbert (3):
savevm: Convert fprintf to error_report
Migration: Add lots of trace events
Print errors
From: Dr. David Alan Gilbert dgilb...@redhat.com
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
savevm.c | 7 ++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/savevm.c b/savevm.c
index 1cc0f02..98895fe 100644
--- a/savevm.c
+++ b/savevm.c
@@ -883,16 +883,20 @@
From: Dr. David Alan Gilbert dgilb...@redhat.com
Implement migration over RDMA using the 'rsocket' library, the code
appears to work for guests with 4GB RAM, but is hitting what
appears to be internal library limitations above that.
(riowrite always returns EAGAIN as soon as I register more
From: Dr. David Alan Gilbert dgilb...@redhat.com
Signed-off-by: Dr. David Alan Gilbert dgilb...@redhat.com
---
savevm.c | 7 ++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/savevm.c b/savevm.c
index 1cc0f02..98895fe 100644
--- a/savevm.c
+++ b/savevm.c
@@ -883,16 +883,20 @@
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