[libvirt] [PATCH v10 00/19] Checkpoint APIs (incremental backup saga)
Eric Blake
eblake at redhat.com
Wed Jul 24 05:55:50 UTC 2019
This is a subset of v10 of incremental backup, fixing Peter's review
comments from v9 (and even some from v8 that I had missed earlier).
There's still a lot more rebasing churn to resolve in the backup
portion of the series before I can post a full backup-v10 label.
There's still a decision to make: do we want this series in 5.6
(possibly with the addition of just patch 2/10 at [1] to introduce the
backup API to make it possible for downstream to backport features
without bumping .so)? This series has checkpoint support for test and
qemu drivers, and I think is probably clean enough to finally satisfy
everything Peter has been pointing out; but while the backup API
itself seems reasonable, the qemu implementation will likely miss 5.6
(as that half of the v9 posting was further behind, and still has a
lot of rebase churn to resolve). Or do we delay the checkpoint API to
5.7, to only go in with backup API? There's also still an outstanding
question of whether the backup API needs a tweak to use 'const char *'
instead of 'int' for the job identifier, given that Peter has a
proposal for overhauling the representation of libvirt jobs.
[1] https://www.redhat.com/archives/libvir-list/2019-July/msg00330.html
Here's a comparison of these patches to v9:
- rebase on top of master
- use more VIR_AUTOFREE and friends (but probably still missed some
spots where it would be worthwhile)
- split several patches
- add in a new patch to ensure the node names are learned at domain
startup (but I didn't play enough with hotplug to see if that also
has problems); necessary in order to...
- get rid of detecting node names in checkpoint code
- completely got rid of the notion of a current checkpoint in the
public API (the internal code still has one, but solely to track
which checkpoint becomes the parent of a new one to maintain a linear
chain; when loading checkpoints on libvirtd restart, there should be
at most one leaf node which becomes the internal current node)
- improved code for handling partial checkpoints (the code now correctly
handles: c1: disks A, B; c2: disks B, C; c3: disks A, B)
001/19:[down] 'snapshot: Don't leak moment obj list metaroot to callers'
002/19:[down] 'snapshot: Saner error message for duplicate create'
003/19:[down] 'snapshot: Documentation and comment improvements'
004/19:[down] 'backup: qemu: Detect node names at domain startup'
005/19:[0101] [FC] 'backup: Document new XML for checkpoints'
006/19:[0031] [FC] 'backup: Introduce virDomainCheckpoint APIs'
007/19:[0051] [FC] 'backup: Document nuances between different state capture APIs'
008/19:[0189] [FC] 'backup: Parse and output checkpoint XML'
009/19:[0066] [FC] 'backup: Allow for lists of checkpoint objects'
010/19:[----] [--] 'backup: Add new domain:checkpoint access control'
011/19:[----] [--] 'backup: Implement checkpoint APIs for remote driver'
012/19:[0161] [FC] 'backup: Implement virsh support for checkpoints'
013/19:[0047] [FC] 'backup: test: Implement metadata tracking for checkpoint APIs'
014/19:[0044] [FC] 'backup: Add virsh-checkpoints test'
015/19:[down] 'backup: qemu: Add directory for tracking checkpoints'
016/19:[0193] [FC] 'backup: qemu: Implement metadata tracking for checkpoint APIs'
017/19:[down] 'backup: qemu: Add helper API for looking up node name'
018/19:[0119] [FC] 'backup: Wire up qemu checkpoint commands over QMP'
019/19:[down] 'backup: Prevent snapshots and checkpoints at same time'
Eric Blake (19):
snapshot: Don't leak moment obj list metaroot to callers
snapshot: Saner error message for duplicate create
snapshot: Documentation and comment improvements
backup: qemu: Detect node names at domain startup
backup: Document new XML for checkpoints
backup: Introduce virDomainCheckpoint APIs
backup: Document nuances between different state capture APIs
backup: Parse and output checkpoint XML
backup: Allow for lists of checkpoint objects
backup: Add new domain:checkpoint access control
backup: Implement checkpoint APIs for remote driver
backup: Implement virsh support for checkpoints
backup: test: Implement metadata tracking for checkpoint APIs
backup: Add virsh-checkpoints test
backup: qemu: Add directory for tracking checkpoints
backup: qemu: Implement metadata tracking for checkpoint APIs
backup: qemu: Add helper API for looking up node name
backup: Wire up qemu checkpoint commands over QMP
backup: Prevent snapshots and checkpoints at same time
include/libvirt/libvirt-domain-checkpoint.h | 137 ++
include/libvirt/libvirt-domain.h | 6 +
include/libvirt/libvirt.h | 5 +-
src/access/viraccessperm.h | 6 +
src/conf/checkpoint_conf.h | 91 ++
src/conf/domain_conf.h | 2 +
src/conf/virconftypes.h | 9 +
src/conf/virdomaincheckpointobjlist.h | 72 +
src/conf/virdomainmomentobjlist.h | 10 +-
src/conf/virdomainobjlist.h | 7 +-
src/conf/virdomainsnapshotobjlist.h | 2 +
src/driver-hypervisor.h | 38 +
src/qemu/qemu_conf.h | 2 +
src/qemu/qemu_domain.h | 18 +
tools/virsh-checkpoint.h | 26 +
tools/virsh-completer.h | 4 +
tools/virsh-util.h | 3 +
tools/virsh.h | 1 +
docs/Makefile.am | 3 +
docs/apibuild.py | 2 +
docs/docs.html.in | 4 +-
docs/format.html.in | 1 +
docs/formatcheckpoint.html.in | 196 +++
docs/formatsnapshot.html.in | 14 +-
docs/index.html.in | 3 +-
docs/kbase.html.in | 5 +
docs/kbase/domainstatecapture.html.in | 303 +++++
docs/schemas/domaincheckpoint.rng | 94 ++
libvirt.spec.in | 2 +
mingw-libvirt.spec.in | 4 +
po/POTFILES | 3 +
src/Makefile.am | 2 +
src/access/viraccessperm.c | 3 +-
src/conf/Makefile.inc.am | 4 +
src/conf/checkpoint_conf.c | 597 +++++++++
src/conf/domain_conf.c | 6 +
src/conf/virdomaincheckpointobjlist.c | 243 ++++
src/conf/virdomainmomentobjlist.c | 55 +-
src/conf/virdomainobjlist.c | 11 +
src/conf/virdomainsnapshotobjlist.c | 9 +
src/libvirt-domain-checkpoint.c | 567 ++++++++
src/libvirt-domain.c | 19 +-
src/libvirt_private.syms | 29 +-
src/libvirt_public.syms | 16 +
src/qemu/qemu_conf.c | 5 +
src/qemu/qemu_domain.c | 190 +++
src/qemu/qemu_driver.c | 731 ++++++++++-
src/qemu/qemu_process.c | 5 +
src/remote/remote_daemon_dispatch.c | 20 +
src/remote/remote_driver.c | 24 +-
src/remote/remote_protocol.x | 123 +-
src/remote_protocol-structs | 69 +
src/rpc/gendispatch.pl | 32 +-
src/test/test_driver.c | 386 +++++-
tests/Makefile.am | 12 +-
.../disk-default.xml | 7 +
.../disk-invalid.xml | 8 +
tests/qemudomaincheckpointxml2xmlin/empty.xml | 1 +
.../name-invalid.xml | 4 +
.../qemudomaincheckpointxml2xmlin/sample.xml | 7 +
tests/qemudomaincheckpointxml2xmlin/size.xml | 4 +
.../disk-default.xml | 11 +
.../qemudomaincheckpointxml2xmlout/empty.xml | 7 +
.../internal-active-invalid.xml | 53 +
.../internal-inactive-invalid.xml | 53 +
.../redefine.xml | 63 +
.../qemudomaincheckpointxml2xmlout/sample.xml | 12 +
tests/qemudomaincheckpointxml2xmlout/size.xml | 11 +
tests/qemudomaincheckpointxml2xmltest.c | 213 +++
tests/virschematest.c | 2 +
tests/virsh-checkpoint | 174 +++
tests/virsh-snapshot | 15 +-
tools/Makefile.am | 1 +
tools/virsh-checkpoint.c | 1153 +++++++++++++++++
tools/virsh-completer.c | 51 +
tools/virsh-domain-monitor.c | 23 +
tools/virsh-domain.c | 7 +
tools/virsh-util.c | 11 +
tools/virsh.c | 2 +
tools/virsh.pod | 201 ++-
80 files changed, 6262 insertions(+), 63 deletions(-)
create mode 100644 include/libvirt/libvirt-domain-checkpoint.h
create mode 100644 src/conf/checkpoint_conf.h
create mode 100644 src/conf/virdomaincheckpointobjlist.h
create mode 100644 tools/virsh-checkpoint.h
create mode 100644 docs/formatcheckpoint.html.in
create mode 100644 docs/kbase/domainstatecapture.html.in
create mode 100644 docs/schemas/domaincheckpoint.rng
create mode 100644 src/conf/checkpoint_conf.c
create mode 100644 src/conf/virdomaincheckpointobjlist.c
create mode 100644 src/libvirt-domain-checkpoint.c
create mode 100644 tests/qemudomaincheckpointxml2xmlin/disk-default.xml
create mode 100644 tests/qemudomaincheckpointxml2xmlin/disk-invalid.xml
create mode 100644 tests/qemudomaincheckpointxml2xmlin/empty.xml
create mode 100644 tests/qemudomaincheckpointxml2xmlin/name-invalid.xml
create mode 100644 tests/qemudomaincheckpointxml2xmlin/sample.xml
create mode 100644 tests/qemudomaincheckpointxml2xmlin/size.xml
create mode 100644 tests/qemudomaincheckpointxml2xmlout/disk-default.xml
create mode 100644 tests/qemudomaincheckpointxml2xmlout/empty.xml
create mode 100644 tests/qemudomaincheckpointxml2xmlout/internal-active-invalid.xml
create mode 100644 tests/qemudomaincheckpointxml2xmlout/internal-inactive-invalid.xml
create mode 100644 tests/qemudomaincheckpointxml2xmlout/redefine.xml
create mode 100644 tests/qemudomaincheckpointxml2xmlout/sample.xml
create mode 100644 tests/qemudomaincheckpointxml2xmlout/size.xml
create mode 100644 tests/qemudomaincheckpointxml2xmltest.c
create mode 100755 tests/virsh-checkpoint
create mode 100644 tools/virsh-checkpoint.c
--
2.20.1
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