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AgeCommit message (Collapse)Author
2009-12-03block migration: Skip zero-sized disksJan Kiszka
No need to migrate emptiness (risking divide by zero later on). Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03block migration: Add support for restore progress reportingJan Kiszka
Inject progress report in percentage into the block live stream. This can be read out and displayed easily on restore. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03block migration: Report progress also via info migrationJan Kiszka
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03block migration: Fix outgoing progress outputJan Kiszka
Report progress of an outgoing live migration to the monitor instead of stdout. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03live migration: Propagate output monitor to callback handlerJan Kiszka
In order to allow proper progress reporting to the monitor that initiated the migration, forward the monitor reference through the migration layer down to SaveLiveStateHandler. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03block migration: Report overall migration progressJan Kiszka
So far progress reporting only works for the first block device. Fix this by keeping an overall sum of sectors to be migratated, calculating the sum of all processed sectors, and finally basing the progress display on those values. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03live migration: Allow cleanup after cancellation or errorJan Kiszka
Introduce qemu_savevm_state_cancel and inject a stage -1 to cancel a live migration. This gives the involved subsystems a chance to clean up dynamically allocated resources. Namely, the block migration layer can now free its device descriptors and pending blocks. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03block migration: Add error handling/propagationJan Kiszka
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03block migration: Consolidate block transmissionJan Kiszka
Based on the original patch by Pierre Riteau: Use a common blk_send function to transmit a block. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03block migration: Consolidate mig_read_device_bulk into mig_save_device_bulkJan Kiszka
Both functions share a lot of code, so make them one. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03block migration: Clean up use of total_sectorsJan Kiszka
We already save total_sectors in BlkMigDevState, let's use this value during the migration and avoid to recalculate it needlessly. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03block migration: Initialize remaining BlkMigState fieldsJan Kiszka
In case we restart a migration, submitted, read_done, transferred, and print_completion need to be reinitialized to 0. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03block migration: Switch device and block lists to QSIMPLEQJan Kiszka
Based on the original patch by Pierre Riteau. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03block migration: Drop dead codeJan Kiszka
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03block migration: Avoid indirection of block_mig_stateJan Kiszka
No need to push block_mig_state to the heap and, thus, establish an indirection. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03block migration: Avoid large stack bufferJan Kiszka
Move a potentially large buffer from stack to heap. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03block migration: Rework constants APIJan Kiszka
Instead of duplicating the definition of constants or introducing trivial retrieval functions move the SECTOR constants into the public block API. This also obsoletes sector_per_block in BlkMigState. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03block migration: Fix coding style and whitespacesJan Kiszka
No functional changes. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-11-17Fix mingw32 buildBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-11-17Block live migrationlirans@il.ibm.com
This patch introduces block migration called during live migration. Block are being copied to the destination in an async way. First the code will transfer the whole disk and then transfer all dirty blocks accumulted during the migration. Still need to improve transition from the iterative phase of migration to the end phase. For now transition will take place when all blocks transfered once, all the dirty blocks will be transfered during the end phase (guest is suspended). Changes from v4: - Global variabels moved to a global state structure allocated dynamically. - Minor coding style issues. - Poll block.c for tracking of dirty blocks instead of manage it here. Signed-off-by: Liran Schour <lirans@il.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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