Hi here is v2 of the migration thread series. There is still some "issues" with locking in the error paths (they are at 54 patches now).
Changes from v1: - migration stats series are included - migration bitmap sync trace-events to know how long it takes - file->last_error use almost removed reworked functions to return real error codes and work with that. Some more work needed here. - new savevm for live migration pending method. see last commit for details. Please test and comment. Later, Juan. The following changes since commit 6e4c0d1f03d6ab407509c32fab7cb4b8230f57ff: hw/pl110: Fix spelling of 'palette' (2012-09-06 17:04:33 +0200) are available in the git repository at: http://repo.or.cz/r/qemu/quintela.git migration-thread-v2 for you to fetch changes up to 688feac0fbc287920dff537ed13fb8483c064f7f: savem: Add calculating a new save_live migration method: pending (2012-09-07 14:00:35 +0200) ---------------------------------------------------------------- Juan Quintela (49): buffered_file: g_realloc() can't fail fix migration sync migration: store end_time in a local variable migration: print total downtime for final phase of migration migration: rename expected_time to expected_downtime migration: export migrate_get_current() migration: print expected downtime in info migrate savevm: Factorize ram globals reset in its own function ram: introduce migration_bitmap_set_dirty() ram: Introduce migration_bitmap_test_and_reset_dirty() ram: Export last_ram_offset() ram: introduce migration_bitmap_sync() ram: create trace event for migration sync bitmap Separate migration bitmap migration: Add dirty_pages_rate to query migrate output buffered_file: rename opaque to migration_state buffered_file: opaque is MigrationState buffered_file: unfold migrate_fd_put_buffer buffered_file: unfold migrate_fd_put_ready buffered_file: unfold migrate_fd_put_buffer buffered_file: unfold migrate_fd_put_buffer buffered_file: We can access directly to bandwidth_limit buffered_file: callers of buffered_flush() already check for errors buffered_file: make buffered_flush return the error code migration: make migrate_fd_wait_for_unfreeze() return errors savevm: unexport qemu_fflush viritio-net: use qemu_get_buffer() in a temp buffer savevm: Remove qemu_fseek() savevm: make qemu_fflush() return an error code savevm: unfold qemu_fclose_internal() savevm: unexport qemu_ftell() savevm: make qemu_fill_buffer() be consistent savevm: Only qemu_fflush() can generate errors buffered_file: buffered_put_buffer() don't need to set last_error block-migration: make flush_blks() return errors block-migration: Switch meaning of return value block-migration: handle errors with the return codes correctly savevm: un-export qemu_file_set_error() savevm: make qemu_file_put_notify() return errors buffered_file: Move from using a timer to use a thread migration: make qemu_fopen_ops_buffered() return void migration: stop all cpus correctly migration: make writes blocking migration: remove unfreeze logic migration: take finer locking buffered_file: Unfold the trick to restart generating migration data buffered_file: don't flush on put buffer buffered_file: unfold buffered_append in buffered_put_buffer savem: Add calculating a new save_live migration method: pending Paolo Bonzini (2): split MRU ram list BufferedFile: append, then flush Umesh Deshpande (2): add a version number to ram_list protect the ramlist with a separate mutex arch_init.c | 174 ++++++++++++++++++++++++++++++++------------ block-migration.c | 100 +++++++++---------------- buffered_file.c | 213 +++++++++++++++++++++--------------------------------- buffered_file.h | 12 +-- cpu-all.h | 17 ++++- exec-obsolete.h | 10 --- exec.c | 45 ++++++++++-- hmp.c | 12 +++ hw/virtio-net.c | 4 +- migration-exec.c | 2 - migration-fd.c | 6 -- migration-tcp.c | 2 +- migration-unix.c | 2 - migration.c | 151 +++++++++++++++++++------------------- migration.h | 10 +++ qapi-schema.json | 18 ++++- qemu-file.h | 11 --- qmp-commands.hx | 9 +++ savevm.c | 144 ++++++++++++++++++------------------ sysemu.h | 1 + trace-events | 4 + vmstate.h | 1 + 22 files changed, 498 insertions(+), 450 deletions(-)
