Re: [libvirt] [PATCH 23/53] vircgroup: introduce virCgroupV2GetBlkioIoDeviceServiced

Signed-off-by: Pavel Hrdina <phrdina(a)redhat.com&gt; --- src/util/vircgroupv2.c | 64 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) diff --git a/src/util/vircgroupv2.c b/src/util/vircgroupv2.c index 30c400f129..eff410258c 100644 --- a/src/util/vircgroupv2.c +++ b/src/util/vircgroupv2.c @@ -657,6 +657,69 @@ virCgroupV2GetBlkioIoServiced(virCgroupPtr group, } +static int +virCgroupV2GetBlkioIoDeviceServiced(virCgroupPtr group, + const char *path, + long long *bytes_read, + long long *bytes_write, + long long *requests_read, + long long *requests_write) +{ + VIR_AUTOFREE(char *) str1 = NULL; + VIR_AUTOFREE(char *) str2 = NULL; + char *p1; + size_t i; + + const char *value_names[] = { + "rbytes=", + "wbytes=", + "rios=", + "wios=", + }; + long long *value_ptrs[] = { + bytes_read, + bytes_write, + requests_read, + requests_write + }; + + if (virCgroupGetValueStr(group, + VIR_CGROUP_CONTROLLER_BLKIO, + "io.stat", &str1) < 0) { + return -1; + } + + if (!(str2 = virCgroupGetBlockDevString(path))) + return -1; + + if (!(p1 = strstr(str1, str2))) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Cannot find byte stats for block device '%s'"), + str2); + return -1; + } + + for (i = 0; i < ARRAY_CARDINALITY(value_names); i++) { + if (!(p1 = strstr(p1, value_names[i]))) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Cannot find byte %sstats for block device '%s'"), + value_names[i], str2); + return -1; + } + + if (virStrToLong_ll(p1 + strlen(value_names[i]), &p1, + 10, value_ptrs[i]) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Cannot parse %sstat '%s'"), + value_names[i], p1 + strlen(value_names[i]));

+ return -1; + } + } + + return 0; +} + + virCgroupBackend virCgroupV2Backend = { .type = VIR_CGROUP_BACKEND_TYPE_V2, @@ -682,6 +745,7 @@ virCgroupBackend virCgroupV2Backend = { .setBlkioWeight = virCgroupV2SetBlkioWeight, .getBlkioWeight = virCgroupV2GetBlkioWeight, .getBlkioIoServiced = virCgroupV2GetBlkioIoServiced, + .getBlkioIoDeviceServiced = virCgroupV2GetBlkioIoDeviceServiced, };