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* migrate: remove QMP/HMP commands for speed, downtime and cache sizeDaniel P. Berrangé2021-03-181-34/+0Star
| | | | | | | | | | | | The generic 'migrate_set_parameters' command handle all types of param. Only the QMP commands were documented in the deprecations page, but the rationale for deprecating applies equally to HMP, and the replacements exist. Furthermore the HMP commands are just shims to the QMP commands, so removing the latter breaks the former unless they get re-implemented. Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
* migration: introduce a delete_snapshot wrapperDaniel P. Berrangé2021-02-081-1/+1
| | | | | | | | | | | | Make snapshot deletion consistent with the snapshot save and load commands by using a wrapper around the blockdev layer. The main difference is that we get upfront validation of the passed in device list (if any). Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20210204124834.774401-10-berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* migration: wire up support for snapshot device selectionDaniel P. Berrangé2021-02-081-2/+3
| | | | | | | | | | Modify load_snapshot/save_snapshot to accept the device list and vmstate node name parameters previously added to the block layer. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20210204124834.774401-9-berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* migration: control whether snapshots are ovewrittenDaniel P. Berrangé2021-02-081-1/+1
| | | | | | | | | | | The traditional HMP "savevm" command will overwrite an existing snapshot if it already exists with the requested name. This new flag allows this to be controlled allowing for safer behaviour with a future QMP command. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20210204124834.774401-8-berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* block: add ability to specify list of blockdevs during snapshotDaniel P. Berrangé2021-02-081-1/+1
| | | | | | | | | | | | | | | | When running snapshot operations, there are various rules for which blockdevs are included/excluded. While this provides reasonable default behaviour, there are scenarios that are not well handled by the default logic. Some of the conditions do not have a single correct answer. Thus there needs to be a way for the mgmt app to provide an explicit list of blockdevs to perform snapshots across. This can be achieved by passing a list of node names that should be used. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20210204124834.774401-5-berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* migration: stop returning errno from load_snapshot()Daniel P. Berrangé2021-02-081-1/+1
| | | | | | | | | | | | | | None of the callers care about the errno value since there is a full Error object populated. This gives consistency with save_snapshot() which already just returns a boolean value. Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> [PMD: Return false/true instead of -1/0, document function] Acked-by: Pavel Dovgalyuk <pavel.dovgalyuk@ispras.ru> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20210204124834.774401-4-berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* block: push error reporting into bdrv_all_*_snapshot functionsDaniel P. Berrangé2021-02-081-6/+1Star
| | | | | | | | | | | | | | | | | The bdrv_all_*_snapshot functions return a BlockDriverState pointer for the invalid backend, which the callers then use to report an error message. In some cases multiple callers are reporting the same error message, but with slightly different text. In the future there will be more error scenarios for some of these methods, which will benefit from fine grained error message reporting. So it is helpful to push error reporting down a level. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> [PMD: Initialize variables] Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20210204124834.774401-2-berrange@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* migration: Display the migration blockersDr. David Alan Gilbert2021-02-081-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update 'info migrate' to display migration blocking information. If the outbound migration is not blocked, there is no change, however if it is blocked a message is displayed with a list of reasons why, e.g. qemu-system-x86_64 -nographic -smp 4 -m 4G -M pc,usb=on \ -chardev null,id=n -device usb-serial,chardev=n \ -virtfs local,path=/home,mount_tag=fs,security_model=none \ -drive if=virtio,file=myimage.qcow2 (qemu) info migrate globals: store-global-state: on only-migratable: off send-configuration: on send-section-footer: on decompress-error-check: on clear-bitmap-shift: 18 Outgoing migration blocked: Migration is disabled when VirtFS export path '/home' is mounted in the guest using mount_tag 'fs' non-migratable device: 0000:00:01.2/1/usb-serial Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20210202135522.127380-3-dgilbert@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* migration: Fix migrate-set-parameters argument validationMarkus Armbruster2021-02-081-12/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 741d4086c8 "migration: Use proper types in json" (v2.12.0) switched MigrationParameters to narrower integer types, and removed the simplified qmp_migrate_set_parameters()'s argument checking accordingly. Good idea, except qmp_migrate_set_parameters() takes MigrateSetParameters, not MigrationParameters. Its job is updating migrate_get_current()->parameters (which *is* of type MigrationParameters) according to its argument. The integers now get truncated silently. Reproducer: ---> {'execute': 'query-migrate-parameters'} <--- {"return": {[...] "compress-threads": 8, [...]}} ---> {"execute": "migrate-set-parameters", "arguments": {"compress-threads": 257}} <--- {"return": {}} ---> {'execute': 'query-migrate-parameters'} <--- {"return": {[...] "compress-threads": 1, [...]}} Fix by resynchronizing MigrateSetParameters with MigrationParameters. Fixes: 741d4086c856320807a2575389d7c0505578270b Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20210202141734.2488076-2-armbru@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* qapi: More complex uses of QAPI_LIST_APPENDEric Blake2021-01-281-15/+10Star
| | | | | | | | | | | | These cases require a bit more thought to review; in each case, the code was appending to a list, but not with a FOOList **tail variable. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20210113221013.390592-6-eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> [Flawed change to qmp_guest_network_get_interfaces() dropped] Signed-off-by: Markus Armbruster <armbru@redhat.com>
* qapi: Use QAPI_LIST_APPEND in trivial casesEric Blake2021-01-281-5/+5
| | | | | | | | | | | | The easiest spots to use QAPI_LIST_APPEND are where we already have an obvious pointer to the tail of a list. While at it, consistently use the variable name 'tail' for that purpose. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20210113221013.390592-5-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* hmp: remove "change vnc TARGET" commandPaolo Bonzini2021-01-231-2/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | The HMP command \"change vnc TARGET\" is messy: - it takes an ugly shortcut to determine if the option has an "id", with incorrect results if "id=" is not preceded by an unescaped comma. - it deletes the existing QemuOpts and does not try to rollback if the parsing fails (which is not causing problems, but only due to how VNC options are parsed) - because it uses the same parsing function as "-vnc", it forces the latter to not support "-vnc help". On top of this, it uses a deprecated QMP command, thus getting in the way of removing the QMP command. Since the usecase for the command is not clear, just remove it and send "change vnc password" directly to the QMP "change-vnc-password" command. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com> Message-Id: <20210120144235.345983-2-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* Remove superfluous timer_del() callsPeter Maydell2021-01-081-1/+0Star
| | | | | | | | | | | | This commit is the result of running the timer-del-timer-free.cocci script on the whole source tree. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Corey Minyard <cminyard@mvista.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20201215154107.3255-4-peter.maydell@linaro.org
* Merge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2020-12-19' into ↵Peter Maydell2021-01-011-6/+7
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | staging QAPI patches patches for 2020-12-19 # gpg: Signature made Sat 19 Dec 2020 09:40:05 GMT # gpg: using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653 # gpg: issuer "armbru@redhat.com" # gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full] # gpg: aka "Markus Armbruster <armbru@pond.sub.org>" [full] # Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653 * remotes/armbru/tags/pull-qapi-2020-12-19: (33 commits) qobject: Make QString immutable block: Use GString instead of QString to build filenames keyval: Use GString to accumulate value strings json: Use GString instead of QString to accumulate strings migration: Replace migration's JSON writer by the general one qobject: Factor JSON writer out of qobject_to_json() qobject: Factor quoted_str() out of to_json() qobject: Drop qstring_get_try_str() qobject: Drop qobject_get_try_str() Revert "qobject: let object_property_get_str() use new API" block: Avoid qobject_get_try_str() qmp: Fix tracing of non-string command IDs qobject: Move internals to qobject-internal.h hw/rdma: Replace QList by GQueue Revert "qstring: add qstring_free()" qobject: Change qobject_to_json()'s value to GString qobject: Use GString instead of QString to accumulate JSON qobject: Make qobject_to_json_pretty() take a pretty argument monitor: Use GString instead of QString for output buffer hmp: Simplify how qmp_human_monitor_command() gets output ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| * qapi: Use QAPI_LIST_PREPEND() where possibleEric Blake2020-12-191-6/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Anywhere we create a list of just one item or by prepending items (typically because order doesn't matter), we can use QAPI_LIST_PREPEND(). But places where we must keep the list in order by appending remain open-coded until later patches. Note that as a side effect, this also performs a cleanup of two minor issues in qga/commands-posix.c: the old code was performing new = g_malloc0(sizeof(*ret)); which 1) is confusing because you have to verify whether 'new' and 'ret' are variables with the same type, and 2) would conflict with C++ compilation (not an actual problem for this file, but makes copy-and-paste harder). Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <20201113011340.463563-5-eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> [Straightforward conflicts due to commit a8aa94b5f8 "qga: update schema for guest-get-disks 'dependents' field" and commit a10b453a52 "target/mips: Move mips_cpu_add_definition() from helper.c to cpu.c" resolved. Commit message tweaked.] Signed-off-by: Markus Armbruster <armbru@redhat.com>
* | monitor:open brace '{' following struct go on the same lineYutao Ai2020-12-181-2/+1Star
|/ | | | | | | | | Move the open brace '{' following struct go on the same line Signed-off-by: Yutao Ai <aiyutao@huawei.com> Message-Id: <20201125014514.55562-2-aiyutao@huawei.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* net: do not exit on "netdev_add help" monitor commandPaolo Bonzini2020-11-241-0/+6
| | | | | | | | | | | | | "netdev_add help" is causing QEMU to exit because the code that invokes show_netdevs is shared between CLI and HMP processing. Move the check to the callers so that exit(0) remains only in the CLI flow. "netdev_add help" is not fixed by this patch; that is left for later work. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
* console: make QMP/HMP screendump run in coroutineMarc-André Lureau2020-11-041-1/+2
| | | | | | | | | | | | | | | | | | | Thanks to the monitors' coroutine support (merge commit b7092cda1b3), the screendump handler can trigger a graphic_hw_update(), yield and let the main loop run until update is done. Then the handler is resumed, and ppm_save() will write the screen image to disk in the coroutine context. The IO is still blocking though, as the file is set blocking so far, this could be addressed by some future change (with other caveats). Related to: https://bugzilla.redhat.com/show_bug.cgi?id=1230527 Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-id: 20201027133602.3038018-4-marcandre.lureau@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* qapi: Add VFIO devices migration stats in Migration statsKirti Wankhede2020-11-011-0/+6
| | | | | | | | | Added amount of bytes transferred to the VM at destination by all VFIO devices Signed-off-by: Kirti Wankhede <kwankhede@nvidia.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
* monitor: Add Monitor parameter to monitor_get_cpu_index()Kevin Wolf2020-10-091-1/+1
| | | | | | | | | | | Most callers actually don't have to rely on cur_mon, but already know for which monitor they call monitor_get_cpu_index(). Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201005155855.256490-3-kwolf@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* monitor: Add Monitor parameter to monitor_set_cpu()Kevin Wolf2020-10-091-1/+1
| | | | | | | | | | | | Most callers actually don't have to rely on cur_mon, but already know for which monitor they call monitor_set_cpu(). Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20201005155855.256490-2-kwolf@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
* qapi: Extract PCI commands to 'pci.json'Philippe Mathieu-Daudé2020-09-291-0/+1
| | | | | | | | | | | | | | | | | | Only qemu-system-FOO and qemu-storage-daemon provide QMP monitors, therefore such declarations and definitions are irrelevant for user-mode emulation. Extracting the PCI commands to their own schema reduces the size of the qapi-misc* headers generated, and pulls less QAPI-generated code into user-mode. Suggested-by: Markus Armbruster <armbru@redhat.com> Acked-by: Markus Armbruster <armbru@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20200913195348.1064154-9-philmd@redhat.com> [Commit message tweaked] Signed-off-by: Markus Armbruster <armbru@redhat.com>
* qapi: Restrict balloon-related commands to machine codePhilippe Mathieu-Daudé2020-09-291-0/+1
| | | | | | | | | | | | | | | | | Only qemu-system-FOO and qemu-storage-daemon provide QMP monitors, therefore such declarations and definitions are irrelevant for user-mode emulation. Restricting the balloon-related commands to machine.json pulls less QAPI-generated code into user-mode. Reviewed-by: David Hildenbrand <david@redhat.com> Acked-by: Markus Armbruster <armbru@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20200913195348.1064154-4-philmd@redhat.com> [Commit message tweaked] Signed-off-by: Markus Armbruster <armbru@redhat.com>
* migration: Add block-bitmap-mapping parameterMax Reitz2020-08-211-0/+30
| | | | | | | | | | | | | | | | | | | This migration parameter allows mapping block node names and bitmap names to aliases for the purpose of block dirty bitmap migration. This way, management tools can use different node and bitmap names on the source and destination and pass the mapping of how bitmaps are to be transferred to qemu (on the source, the destination, or even both with arbitrary aliases in the migration stream). While touching this code, fix a bug where bitmap names longer than 255 bytes would fail an assertion in qemu_put_counted_string(). Suggested-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Signed-off-by: Max Reitz <mreitz@redhat.com> Message-Id: <20200820150725.68687-2-mreitz@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Signed-off-by: Eric Blake <eblake@redhat.com>
* qapi: Use returned bool to check for failure, Coccinelle partMarkus Armbruster2020-07-101-2/+1Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The previous commit enables conversion of visit_foo(..., &err); if (err) { ... } to if (!visit_foo(..., errp)) { ... } for visitor functions that now return true / false on success / error. Coccinelle script: @@ identifier fun =~ "check_list|input_type_enum|lv_start_struct|lv_type_bool|lv_type_int64|lv_type_str|lv_type_uint64|output_type_enum|parse_type_bool|parse_type_int64|parse_type_null|parse_type_number|parse_type_size|parse_type_str|parse_type_uint64|print_type_bool|print_type_int64|print_type_null|print_type_number|print_type_size|print_type_str|print_type_uint64|qapi_clone_start_alternate|qapi_clone_start_list|qapi_clone_start_struct|qapi_clone_type_bool|qapi_clone_type_int64|qapi_clone_type_null|qapi_clone_type_number|qapi_clone_type_str|qapi_clone_type_uint64|qapi_dealloc_start_list|qapi_dealloc_start_struct|qapi_dealloc_type_anything|qapi_dealloc_type_bool|qapi_dealloc_type_int64|qapi_dealloc_type_null|qapi_dealloc_type_number|qapi_dealloc_type_str|qapi_dealloc_type_uint64|qobject_input_check_list|qobject_input_check_struct|qobject_input_start_alternate|qobject_input_start_list|qobject_input_start_struct|qobject_input_type_any|qobject_input_type_bool|qobject_input_type_bool_keyval|qobject_input_type_int64|qobject_input_type_int64_keyval|qobject_input_type_null|qobject_input_type_number|qobject_input_type_number_keyval|qobject_input_type_size_keyval|qobject_input_type_str|qobject_input_type_str_keyval|qobject_input_type_uint64|qobject_input_type_uint64_keyval|qobject_output_start_list|qobject_output_start_struct|qobject_output_type_any|qobject_output_type_bool|qobject_output_type_int64|qobject_output_type_null|qobject_output_type_number|qobject_output_type_str|qobject_output_type_uint64|start_list|visit_check_list|visit_check_struct|visit_start_alternate|visit_start_list|visit_start_struct|visit_type_.*"; expression list args; typedef Error; Error *err; @@ - fun(args, &err); - if (err) + if (!fun(args, &err)) { ... } A few line breaks tidied up manually. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20200707160613.848843-19-armbru@redhat.com>
* hmp: Eliminate a variable in hmp_migrate_set_parameter()Markus Armbruster2020-07-101-6/+2Star
| | | | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20200707160613.848843-17-armbru@redhat.com>
* hmp: Handle virtio-mem when printing memory device infoDavid Hildenbrand2020-07-031-0/+16
| | | | | | | | | | | | Print the memory device info just like for other memory devices. Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20200626072248.78761-14-david@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* monitor/hmp-cmds: improvements for the 'info migrate'Mao Zhongyi2020-06-171-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When running: (qemu) info migrate globals: store-global-state: on only-migratable: off ... xbzrle transferred: 640892 kbytes xbzrle pages: 16645936 pages xbzrle cache miss: 1525426 xbzrle cache miss rate: 0.09 xbzrle encoding rate: 91.42 xbzrle overflow: 40896 ... compression pages: 377710 pages compression busy: 0 compression busy rate: 0.00 compressed size: 463169457 compression rate: 3.33 Add units for 'xbzrle cache miss' and 'compressed size', make it easier to read. Suggested-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com> Message-Id: <20200603080904.997083-8-maozhongyi@cmss.chinamobile.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* monitor/hmp-cmds: add 'goto end' to reduce duplicate code.Mao Zhongyi2020-06-171-4/+4
| | | | | | | Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com> Message-Id: <20200603080904.997083-7-maozhongyi@cmss.chinamobile.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* monitor/hmp-cmds: delete redundant Error check before invoke hmp_handle_error()Mao Zhongyi2020-06-171-3/+2Star
| | | | | | | | | hmp_handle_error() does Error check internally. Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com> Message-Id: <20200603080904.997083-6-maozhongyi@cmss.chinamobile.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* monitor/hmp-cmds: don't silently output when running 'migrate_set_downtime' ↵Mao Zhongyi2020-06-171-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | fails Although 'migrate_set_downtime' has been deprecated and replaced with 'migrate_set_parameter downtime_limit', it has not been completely eliminated, possibly due to compatibility with older versions. I think as long as this old parameter is running, we should report appropriate message when something goes wrong, not be silent. before: (qemu) migrate_set_downtime -1 (qemu) after: (qemu) migrate_set_downtime -1 Error: Parameter 'downtime_limit' expects an integer in the range of 0 to 2000 seconds Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20200603080904.997083-5-maozhongyi@cmss.chinamobile.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* monitor/hmp-cmds: add units for migrate_parametersMao Zhongyi2020-06-171-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | When running: (qemu) info migrate_parameters announce-initial: 50 ms announce-max: 550 ms announce-step: 100 ms compress-wait-thread: on ... max-bandwidth: 33554432 bytes/second downtime-limit: 300 milliseconds x-checkpoint-delay: 20000 ... xbzrle-cache-size: 67108864 add units for the parameters 'x-checkpoint-delay' and 'xbzrle-cache-size', it's easier to read, also move milliseconds to ms to keep the same style. Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Message-Id: <20200603080904.997083-4-maozhongyi@cmss.chinamobile.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* pci: Display PCI IRQ pin in "info pci"Peter Xu2020-06-121-1/+2
| | | | | | | | | | | | | | | | | | | | | | Sometimes it would be good to be able to read the pin number along with the IRQ number allocated. Since we'll dump the IRQ number, no reason to not dump the pin information. For example, the vfio-pci device will overwrite the pin with the hardware pin number. It would be nice to know the pin number of one assigned device from QMP/HMP. CC: Dr. David Alan Gilbert <dgilbert@redhat.com> CC: Alex Williamson <alex.williamson@redhat.com> CC: Michael S. Tsirkin <mst@redhat.com> CC: Marcel Apfelbaum <marcel.apfelbaum@gmail.com> CC: Julia Suvorova <jusual@redhat.com> CC: Markus Armbruster <armbru@redhat.com> Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <20200317195908.283800-1-peterx@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Acked-by: Markus Armbruster <armbru@redhat.com>
* migration/xbzrle: add encoding rateWei Wang2020-05-071-0/+2
| | | | | | | | | | | | Users may need to check the xbzrle encoding rate to know if the guest memory is xbzrle encoding-friendly, and dynamically turn off the encoding if the encoding rate is low. Signed-off-by: Yi Sun <yi.y.sun@intel.com> Signed-off-by: Wei Wang <wei.w.wang@intel.com> Message-Id: <1588208375-19556-1-git-send-email-wei.w.wang@intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* migration/throttle: Add cpu-throttle-tailslow migration parameterKeqian Zhu2020-05-071-0/+8
| | | | | | | | | | | | | | | | | | | | | At the tail stage of throttling, the Guest is very sensitive to CPU percentage while the @cpu-throttle-increment is excessive usually at tail stage. If this parameter is true, we will compute the ideal CPU percentage used by the Guest, which may exactly make the dirty rate match the dirty rate threshold. Then we will choose a smaller throttle increment between the one specified by @cpu-throttle-increment and the one generated by ideal CPU percentage. Therefore, it is compatible to traditional throttling, meanwhile the throttle increment won't be excessive at tail stage. This may make migration time longer, and is disabled by default. Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com> Message-Id: <20200413101508.54793-1-zhukeqian1@huawei.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* migration: move the units of migrate parameters from milliseconds to msMao Zhongyi2020-05-071-4/+4
| | | | | | | | Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <474bb6cf67defb8be9de5035c11aee57a680557a.1585641083.git.maozhongyi@cmss.chinamobile.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* monitor/hmp-cmds: add hmp_handle_error() for hmp_migrate_set_speed()Mao Zhongyi2020-05-071-1/+4
| | | | | | | Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <305323f835436023c53d759f5ab18af3ec874183.1585641083.git.maozhongyi@cmss.chinamobile.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* qapi: Only input visitors can actually failMarkus Armbruster2020-04-301-1/+2
| | | | | | | | | | The previous few commits have made this more obvious, and removed the one exception. Time to clarify the documentation, and drop dead error checking. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20200424084338.26803-13-armbru@redhat.com>
* migration: use "" instead of (null) for tls-authzMao Zhongyi2020-03-251-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | run: (qemu) info migrate_parameters announce-initial: 50 ms ... announce-max: 550 ms multifd-compression: none xbzrle-cache-size: 4194304 max-postcopy-bandwidth: 0 tls-authz: '(null)' Migration parameter 'tls-authz' is used to provide the QOM ID of a QAuthZ subclass instance that provides the access control check, default is NULL. But the empty string is not a valid object ID, so use "" instead of the default. Although it will fail when lookup an object with ID "", it is harmless, just consistent with tls_creds. As a bonus, this patch also fixed the bad indentation on the last line and removed 'has_tls_authz' redundant check in 'hmp_info_migrate_parameters'. Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com> Message-Id: <119f539a9f4d198bc3bcced46b8280520d60bc51.1585100802.git.maozhongyi@cmss.chinamobile.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* hmp/vnc: Fix info vnc list leakDr. David Alan Gilbert2020-03-251-2/+3
| | | | | | | | | | | | We're iterating the list, and then freeing the iteration pointer rather than the list head. Fixes: 0a9667ecdb6d ("hmp: Update info vnc") Reported-by: Coverity (CID 1421932) Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20200323120822.51266-1-dgilbert@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* xbzrle: update xbzrle docMao Zhongyi2020-03-251-1/+1
| | | | | | | | | | | Add new parameter description, also: 1. Remove unsociable space. 2. Nit picking: s/two/2 in report Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com> Message-Id: <20200320143216.423374-1-maozhongyi@cmss.chinamobile.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* hmp-cmd: fix a missing_break warningPan Nengyuan2020-03-251-0/+1
| | | | | | | | | | | | | | | | | | | | | This fix coverity issues 94417686: 1260 break; CID 94417686: (MISSING_BREAK) 1261. unterminated_case: The case for value "MIGRATION_PARAMETER_THROTTLE_TRIGGER_THRESHOLD" is not terminated by a 'break' statement. 1261 case MIGRATION_PARAMETER_THROTTLE_TRIGGER_THRESHOLD: 1262 p->has_throttle_trigger_threshold = true; 1263 visit_type_int(v, param, &p->throttle_trigger_threshold, &err); 1264 case MIGRATION_PARAMETER_CPU_THROTTLE_INITIAL: Fixes: dc14a470763c96fd9d360e1028ce38e8c3613a77 Fixes: Coverity (CID 1421950) Reported-by: Euler Robot <euler.robot@huawei.com> Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com> Message-Id: <20200318071620.59748-1-pannengyuan@huawei.com> Reviewed-by: Keqian Zhu <zhukeqian1@huawei.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* migration/throttle: Add throttle-trig-thres migration parameterKeqian Zhu2020-03-131-0/+7
| | | | | | | | | | | | | | | | | | Currently, if the bytes_dirty_period is more than the 50% of bytes_xfer_period, we start or increase throttling. If we make this percentage higher, then we can tolerate higher dirty rate during migration, which means less impact on guest. The side effect of higher percentage is longer migration time. We can make this parameter configurable to switch between mig- ration time first or guest performance first. The default value is 50 and valid range is 1 to 100. Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com> Message-Id: <20200224023142.39360-1-zhukeqian1@huawei.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* monitor/hmp: move hmp_info_block* to block-hmp-cmds.cMaxim Levitsky2020-03-091-388/+0Star
| | | | | | | Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20200308092440.23564-11-mlevitsk@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* monitor/hmp: move remaining hmp_block* functions to block-hmp-cmds.cMaxim Levitsky2020-03-091-137/+0Star
| | | | | | | Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20200308092440.23564-10-mlevitsk@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* monitor/hmp: move hmp_nbd_server* to block-hmp-cmds.cMaxim Levitsky2020-03-091-100/+0Star
| | | | | | | Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20200308092440.23564-9-mlevitsk@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* monitor/hmp: move hmp_snapshot_* to block-hmp-cmds.cMaxim Levitsky2020-03-091-47/+0Star
| | | | | | | | | | hmp_snapshot_blkdev is from GPLv2 version of the hmp-cmds.c thus have to change the licence to GPLv2 Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20200308092440.23564-8-mlevitsk@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* monitor/hmp: move hmp_block_job* to block-hmp-cmds.cMaxim Levitsky2020-03-091-52/+0Star
| | | | | | | Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20200308092440.23564-7-mlevitsk@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* monitor/hmp: move hmp_drive_mirror and hmp_drive_backup to block-hmp-cmds.cMaxim Levitsky2020-03-091-58/+0Star
| | | | | | | | | | Moved code was added after 2012-01-13, thus under GPLv2+ Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20200308092440.23564-6-mlevitsk@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Fixed commit message
* monitor/hmp-cmds: Remove redundant statement in hmp_rocker_of_dpa_groups()Chen Qun2020-03-091-4/+1Star
| | | | | | | | | | | | | | Clang static code analyzer show warning: monitor/hmp-cmds.c:2867:17: warning: Value stored to 'set' is never read set = true; ^ ~~~~ Reported-by: Euler Robot <euler.robot@huawei.com> Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200302130715.29440-14-kuhn.chenqun@huawei.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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