diff options
Diffstat (limited to 'qga/commands-win32.c')
| -rw-r--r-- | qga/commands-win32.c | 225 |
1 files changed, 150 insertions, 75 deletions
diff --git a/qga/commands-win32.c b/qga/commands-win32.c index 0d1b836..8227480 100644 --- a/qga/commands-win32.c +++ b/qga/commands-win32.c @@ -27,6 +27,7 @@ #include <lm.h> #include <wtsapi32.h> #include <wininet.h> +#include <pdh.h> #include "guest-agent-core.h" #include "vss-win32.h" @@ -119,6 +120,28 @@ static OpenFlags guest_file_open_modes[] = { {"a+b", FILE_GENERIC_APPEND | GENERIC_READ, OPEN_ALWAYS } }; +/* + * We use an exponentially weighted moving average, just like Unix systems do + * https://en.wikipedia.org/wiki/Load_(computing)#Unix-style_load_calculation + * + * These constants serve as the damping factor and are calculated with + * 1 / exp(sampling interval in seconds / window size in seconds) + * + * This formula comes from linux's include/linux/sched/loadavg.h + * https://github.com/torvalds/linux/blob/345671ea0f9258f410eb057b9ced9cefbbe5dc78/include/linux/sched/loadavg.h#L20-L23 + */ +#define LOADAVG_FACTOR_1F 0.9200444146293232478931553241 +#define LOADAVG_FACTOR_5F 0.9834714538216174894737477501 +#define LOADAVG_FACTOR_15F 0.9944598480048967508795473394 +/* + * The time interval in seconds between taking load counts, same as Linux + */ +#define LOADAVG_SAMPLING_INTERVAL 5 + +double load_avg_1m; +double load_avg_5m; +double load_avg_15m; + #define debug_error(msg) do { \ char *suffix = g_win32_error_message(GetLastError()); \ g_debug("%s: %s", (msg), suffix); \ @@ -826,8 +849,6 @@ static void get_disk_properties(HANDLE vol_h, GuestDiskAddress *disk, } out_free: g_free(dev_desc); - - return; } static void get_single_disk_info(int disk_number, @@ -891,7 +912,6 @@ static void get_single_disk_info(int disk_number, err_close: CloseHandle(disk_h); - return; } /* VSS provider works with volumes, thus there is no difference if @@ -1203,7 +1223,7 @@ GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) { if (!vss_initialized()) { - error_setg(errp, QERR_UNSUPPORTED); + error_setg(errp, "fsfreeze not possible as VSS failed to initialize"); return 0; } @@ -1231,7 +1251,7 @@ int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, Error *local_err = NULL; if (!vss_initialized()) { - error_setg(errp, QERR_UNSUPPORTED); + error_setg(errp, "fsfreeze not possible as VSS failed to initialize"); return 0; } @@ -1266,13 +1286,16 @@ int64_t qmp_guest_fsfreeze_thaw(Error **errp) int i; if (!vss_initialized()) { - error_setg(errp, QERR_UNSUPPORTED); + error_setg(errp, "fsfreeze not possible as VSS failed to initialize"); return 0; } qga_vss_fsfreeze(&i, false, NULL, errp); ga_unset_frozen(ga_state); + + slog("guest-fsthaw called"); + return i; } @@ -1494,11 +1517,6 @@ out: } } -void qmp_guest_suspend_hybrid(Error **errp) -{ - error_setg(errp, QERR_UNSUPPORTED); -} - static IP_ADAPTER_ADDRESSES *guest_get_adapters_addresses(Error **errp) { IP_ADAPTER_ADDRESSES *adptr_addrs = NULL; @@ -1862,12 +1880,6 @@ GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) return NULL; } -int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) -{ - error_setg(errp, QERR_UNSUPPORTED); - return -1; -} - static gchar * get_net_error_message(gint error) { @@ -1925,7 +1937,7 @@ void qmp_guest_set_user_password(const char *username, GError *gerr = NULL; if (crypted) { - error_setg(errp, QERR_UNSUPPORTED); + error_setg(errp, "'crypted' must be off on this host"); return; } @@ -1969,55 +1981,6 @@ done: g_free(rawpasswddata); } -GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) -{ - error_setg(errp, QERR_UNSUPPORTED); - return NULL; -} - -GuestMemoryBlockResponseList * -qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) -{ - error_setg(errp, QERR_UNSUPPORTED); - return NULL; -} - -GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) -{ - error_setg(errp, QERR_UNSUPPORTED); - return NULL; -} - -/* add unsupported commands to the list of blocked RPCs */ -GList *ga_command_init_blockedrpcs(GList *blockedrpcs) -{ - const char *list_unsupported[] = { - "guest-suspend-hybrid", - "guest-set-vcpus", - "guest-get-memory-blocks", "guest-set-memory-blocks", - "guest-get-memory-block-size", "guest-get-memory-block-info", - NULL}; - char **p = (char **)list_unsupported; - - while (*p) { - blockedrpcs = g_list_append(blockedrpcs, g_strdup(*p++)); - } - - if (!vss_init(true)) { - g_debug("vss_init failed, vss commands are going to be disabled"); - const char *list[] = { - "guest-get-fsinfo", "guest-fsfreeze-status", - "guest-fsfreeze-freeze", "guest-fsfreeze-thaw", NULL}; - p = (char **)list; - - while (*p) { - blockedrpcs = g_list_append(blockedrpcs, g_strdup(*p++)); - } - } - - return blockedrpcs; -} - /* register init/cleanup routines for stateful command groups */ void ga_command_state_init(GAState *s, GACommandState *cs) { @@ -2148,7 +2111,7 @@ static const ga_win_10_0_t WIN_10_0_SERVER_VERSION_MATRIX[] = { {14393, "Microsoft Windows Server 2016", "2016"}, {17763, "Microsoft Windows Server 2019", "2019"}, {20344, "Microsoft Windows Server 2022", "2022"}, - {26040, "MIcrosoft Windows Server 2025", "2025"}, + {26040, "Microsoft Windows Server 2025", "2025"}, { } }; @@ -2174,7 +2137,6 @@ static void ga_get_win_version(RTL_OSVERSIONINFOEXW *info, Error **errp) rtl_get_version_t rtl_get_version = (rtl_get_version_t)fun; rtl_get_version(info); - return; } static char *ga_get_win_name(const OSVERSIONINFOEXW *os_version, bool id) @@ -2506,14 +2468,127 @@ char *qga_get_host_name(Error **errp) return g_utf16_to_utf8(tmp, size, NULL, NULL, NULL); } -GuestDiskStatsInfoList *qmp_guest_get_diskstats(Error **errp) + +static VOID CALLBACK load_avg_callback(PVOID hCounter, BOOLEAN timedOut) { - error_setg(errp, QERR_UNSUPPORTED); - return NULL; + PDH_FMT_COUNTERVALUE displayValue; + double currentLoad; + PDH_STATUS err; + + err = PdhGetFormattedCounterValue( + (PDH_HCOUNTER)hCounter, PDH_FMT_DOUBLE, 0, &displayValue); + /* Skip updating the load if we can't get the value successfully */ + if (err != ERROR_SUCCESS) { + slog("PdhGetFormattedCounterValue failed to get load value with 0x%lx", + err); + return; + } + currentLoad = displayValue.doubleValue; + + load_avg_1m = load_avg_1m * LOADAVG_FACTOR_1F + currentLoad * \ + (1.0 - LOADAVG_FACTOR_1F); + load_avg_5m = load_avg_5m * LOADAVG_FACTOR_5F + currentLoad * \ + (1.0 - LOADAVG_FACTOR_5F); + load_avg_15m = load_avg_15m * LOADAVG_FACTOR_15F + currentLoad * \ + (1.0 - LOADAVG_FACTOR_15F); } -GuestCpuStatsList *qmp_guest_get_cpustats(Error **errp) +static BOOL init_load_avg_counter(Error **errp) { - error_setg(errp, QERR_UNSUPPORTED); - return NULL; + CONST WCHAR *szCounterPath = L"\\System\\Processor Queue Length"; + PDH_STATUS status; + BOOL ret; + HQUERY hQuery; + HCOUNTER hCounter; + HANDLE event; + HANDLE waitHandle; + + status = PdhOpenQueryW(NULL, 0, &hQuery); + if (status != ERROR_SUCCESS) { + /* + * If the function fails, the return value is a system error code or + * a PDH error code. error_setg_win32 cant translate PDH error code + * properly, so just report it as is. + */ + error_setg_win32(errp, (DWORD)status, + "PdhOpenQueryW failed with 0x%lx", status); + return FALSE; + } + + status = PdhAddEnglishCounterW(hQuery, szCounterPath, 0, &hCounter); + if (status != ERROR_SUCCESS) { + error_setg_win32(errp, (DWORD)status, + "PdhAddEnglishCounterW failed with 0x%lx. Performance counters may be disabled.", + status); + PdhCloseQuery(hQuery); + return FALSE; + } + + event = CreateEventW(NULL, FALSE, FALSE, L"LoadUpdateEvent"); + if (event == NULL) { + error_setg_win32(errp, GetLastError(), "Create LoadUpdateEvent failed"); + PdhCloseQuery(hQuery); + return FALSE; + } + + status = PdhCollectQueryDataEx(hQuery, LOADAVG_SAMPLING_INTERVAL, event); + if (status != ERROR_SUCCESS) { + error_setg_win32(errp, (DWORD)status, + "PdhCollectQueryDataEx failed with 0x%lx", status); + CloseHandle(event); + PdhCloseQuery(hQuery); + return FALSE; + } + + ret = RegisterWaitForSingleObject( + &waitHandle, + event, + (WAITORTIMERCALLBACK)load_avg_callback, + (PVOID)hCounter, + INFINITE, + WT_EXECUTEDEFAULT); + + if (ret == 0) { + error_setg_win32(errp, GetLastError(), + "RegisterWaitForSingleObject failed"); + CloseHandle(event); + PdhCloseQuery(hQuery); + return FALSE; + } + + ga_set_load_avg_wait_handle(ga_state, waitHandle); + ga_set_load_avg_event(ga_state, event); + ga_set_load_avg_pdh_query(ga_state, hQuery); + + return TRUE; +} + +GuestLoadAverage *qmp_guest_get_load(Error **errp) +{ + /* + * The load average logic calls PerformaceCounterAPI, which can result + * in a performance penalty. This avoids running the load average logic + * until a management application actually requests it. The load average + * will not initially be very accurate, but assuming that any interested + * management application will request it repeatedly throughout the lifetime + * of the VM, this seems like a good mitigation. + */ + if (ga_get_load_avg_pdh_query(ga_state) == NULL) { + /* set initial values */ + load_avg_1m = 0; + load_avg_5m = 0; + load_avg_15m = 0; + + if (init_load_avg_counter(errp) == false) { + return NULL; + } + } + + GuestLoadAverage *ret = NULL; + + ret = g_new0(GuestLoadAverage, 1); + ret->load1m = load_avg_1m; + ret->load5m = load_avg_5m; + ret->load15m = load_avg_15m; + return ret; } |