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qemu/migration
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Markus Armbruster fdac62dbd3 migration: Rephrase message on failure to save / load Xen device state 
Functions that use an Error **errp parameter to return errors should
not also report them to the user, because reporting is the caller's
job.  When the caller does, the error is reported twice.  When it
doesn't (because it recovered from the error), there is no error to
report, i.e. the report is bogus.

qmp_xen_save_devices_state() and qmp_xen_load_devices_state() violate
this principle: they call qemu_save_device_state() and
qemu_loadvm_state(), which call error_report_err().

I wish I could clean this up now, but migration's error reporting is
too complicated (confused?) for me to mess with it.

Instead, I'm merely improving the error reported by
qmp_xen_load_devices_state() and qmp_xen_load_devices_state() to the
QMP core from

    An IO error has occurred

to
    saving Xen device state failed

and

    loading Xen device state failed

respectively.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240513141703.549874-6-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Fabiano Rosas <farosas@suse.de>
Acked-by: Peter Xu <peterx@redhat.com>
2024-05-27 12:42:52 +02:00
..
block-dirty-bitmap.c migration: Add Error** argument to add_bitmaps_to_list() 2024-04-23 18:36:01 -04:00
channel-block.c io: follow coroutine AioContext in qio_channel_yield() 2023-09-07 20:32:11 -05:00
channel-block.h migration: introduce a QIOChannel impl for BlockDriverState VMState 2022-06-22 19:33:43 +01:00
channel.c migration: Fix migration_channel_read_peek() error path 2024-01-04 09:52:42 +08:00
channel.h migration: check magic value for deciding the mapping of channels 2023-02-06 19:22:57 +01:00
colo-failover.c migration/colo: Improve an x-colo-lost-heartbeat error message 2023-02-23 14:10:17 +01:00
colo-stubs.c migration/colo: make colo_incoming_co() return void 2024-05-22 17:34:31 -03:00
colo.c migration/colo: Tidy up bql_unlock() around bdrv_activate_all() 2024-05-22 17:34:36 -03:00
dirtyrate.c migration: remove unnecessary zlib dependency 2024-05-25 13:28:02 +02:00
dirtyrate.h migration/calc-dirty-rate: millisecond-granularity period 2023-10-10 08:03:50 +08:00
exec.c migration: simplify exec migration functions 2024-03-04 07:12:40 +01:00
exec.h migration: convert exec backend to accept MigrateAddress. 2023-11-02 11:35:04 +01:00
fd.c migration: Deprecate fd: for file migration 2024-05-08 09:20:59 -03:00
fd.h migration: Revert mapped-ram multifd support to fd: URI 2024-03-22 12:12:08 -04:00
file.c migration: Revert mapped-ram multifd support to fd: URI 2024-03-22 12:12:08 -04:00
file.h migration: Fix iocs leaks during file and fd migration 2024-03-14 11:39:08 -04:00
global_state.c migration 1st pull for 9.0 2024-01-05 13:35:25 +00:00
meson.build migration: remove unnecessary zlib dependency 2024-05-25 13:28:02 +02:00
migration-hmp-cmds.c migration: Remove non-multifd compression 2024-05-08 09:20:59 -03:00
migration-stats.c migration: migration_rate_limit_reset() don't need the QEMUFile 2023-10-31 08:44:33 +01:00
migration-stats.h migration: Remove transferred atomic counter 2023-10-31 08:44:33 +01:00
migration.c Migration pull request 2024-05-22 15:32:25 -07:00
migration.h migration: Remove non-multifd compression 2024-05-08 09:20:59 -03:00
multifd-zero-page.c migration/multifd: solve zero page causing multiple page faults 2024-04-23 18:36:01 -04:00
multifd-zlib.c migration/multifd: solve zero page causing multiple page faults 2024-04-23 18:36:01 -04:00
multifd-zstd.c migration/multifd: solve zero page causing multiple page faults 2024-04-23 18:36:01 -04:00
multifd.c migration/multifd: solve zero page causing multiple page faults 2024-04-23 18:36:01 -04:00
multifd.h migration/multifd: Implement zero page transmission on the multifd thread. 2024-03-11 16:57:09 -04:00
options.c migration: Remove non-multifd compression 2024-05-08 09:20:59 -03:00
options.h migration: Remove non-multifd compression 2024-05-08 09:20:59 -03:00
page_cache.c migration: Fix cache_init()'s "Failed to allocate" error messages 2021-02-08 11:19:51 +00:00
page_cache.h migration: Clean up signed vs. unsigned XBZRLE cache-size 2021-02-08 11:19:51 +00:00
postcopy-ram.c migration: remove PostcopyDiscardState from typedefs.h 2024-05-03 15:47:48 +02:00
postcopy-ram.h migration: remove error from notifier data 2024-02-28 11:31:28 +08:00
qemu-file.c migration: remove unnecessary zlib dependency 2024-05-25 13:28:02 +02:00
qemu-file.h migration: Remove non-multifd compression 2024-05-08 09:20:59 -03:00
ram.c migration: Remove non-multifd compression 2024-05-08 09:20:59 -03:00
ram.h migration/multifd: solve zero page causing multiple page faults 2024-04-23 18:36:01 -04:00
rdma.c migration/rdma: Fix a memory issue for migration 2024-03-11 14:41:40 -04:00
rdma.h migration: convert rdma backend to accept MigrateAddress 2023-11-02 11:35:03 +01:00
savevm.c migration: Rephrase message on failure to save / load Xen device state 2024-05-27 12:42:52 +02:00
savevm.h migration: Add Error** argument to qemu_savevm_state_setup() 2024-04-23 18:36:01 -04:00
socket.c migration/multifd: Drop unnecessary helper to destroy IOC 2024-02-28 11:31:28 +08:00
socket.h migration/multifd: Drop unnecessary helper to destroy IOC 2024-02-28 11:31:28 +08:00
target.c migration: Add migration prefix to functions in target.c 2023-09-11 08:34:06 +02:00
threadinfo.c migration/multifd: Protect accesses to migration_threads 2023-07-26 10:55:56 +02:00
threadinfo.h migration/multifd: Protect accesses to migration_threads 2023-07-26 10:55:56 +02:00
tls.c migration: Drop unused parameter for migration_tls_client_create() 2023-05-03 11:24:20 +02:00
tls.h migration: Drop unused parameter for migration_tls_client_create() 2023-05-03 11:24:20 +02:00
trace-events migration: add "exists" info to load-state-field trace 2024-05-22 17:34:40 -03:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vmstate-types.c Move CPU softfloat unions to cpu-float.h 2022-04-06 14:31:43 +02:00
vmstate.c migration: fix a typo 2024-05-22 17:34:40 -03:00
xbzrle.c migration/xbzrle: Use i386 host/cpuinfo.h 2023-05-23 16:51:18 -07:00
xbzrle.h migration/xbzrle: Use i386 host/cpuinfo.h 2023-05-23 16:51:18 -07:00
yank_functions.c migration/yank: Use channel features 2024-01-29 11:02:12 +08:00
yank_functions.h migration: Move the yank unregister of channel_close out 2021-07-26 12:45:03 +01:00