6db7fd1ca9
In some scenarios, when copy-before-write operations lasts too long time, it's better to cancel it. Most useful would be to use the new option together with on-cbw-error=break-snapshot: this way if cbw operation takes too long time we'll just cancel backup process but do not disturb the guest too much. Note the tricky point of realization: we keep additional point in bs->in_flight during block_copy operation even if it's timed-out. Background "cancelled" block_copy operations will finish at some point and will want to access state. We should care to not free the state in .bdrv_close() earlier. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@openvz.org> Reviewed-by: Hanna Reitz <hreitz@redhat.com> [vsementsov: use bdrv_inc_in_flight()/bdrv_dec_in_flight() instead of direct manipulation on bs->in_flight] Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru> |
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| .. | ||
| acpi.json | ||
| audio.json | ||
| authz.json | ||
| block-core.json | ||
| block-export.json | ||
| block.json | ||
| char.json | ||
| common.json | ||
| compat.json | ||
| control.json | ||
| crypto.json | ||
| dump.json | ||
| error.json | ||
| introspect.json | ||
| job.json | ||
| machine-target.json | ||
| machine.json | ||
| meson.build | ||
| migration.json | ||
| misc-target.json | ||
| misc.json | ||
| net.json | ||
| opts-visitor.c | ||
| pci.json | ||
| pragma.json | ||
| qapi-clone-visitor.c | ||
| qapi-dealloc-visitor.c | ||
| qapi-forward-visitor.c | ||
| qapi-schema.json | ||
| qapi-type-helpers.c | ||
| qapi-util.c | ||
| qapi-visit-core.c | ||
| qdev.json | ||
| qmp-dispatch.c | ||
| qmp-event.c | ||
| qmp-registry.c | ||
| qobject-input-visitor.c | ||
| qobject-output-visitor.c | ||
| qom.json | ||
| rdma.json | ||
| replay.json | ||
| rocker.json | ||
| run-state.json | ||
| sockets.json | ||
| stats.json | ||
| string-input-visitor.c | ||
| string-output-visitor.c | ||
| tpm.json | ||
| trace-events | ||
| trace.h | ||
| trace.json | ||
| transaction.json | ||
| ui.json | ||
| yank.json | ||