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SUSE:SLE-12-SP4:GA
libvirt.11509
d2b77608-libxl-maxmem-fix.patch
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File d2b77608-libxl-maxmem-fix.patch of Package libvirt.11509
commit d2b77608e9e9c23416a9ac93a50054348cb51653 Author: Jim Fehlig <jfehlig@suse.com> Date: Mon Jan 16 10:51:40 2017 -0700 libxl: fix reporting of maximum memory The libxl driver reports different values of maximum memory depending on state of a domain. If inactive, maximum memory value is reported correctly. When active, maximum memory is derived from max_pages value returned by the XEN_SYSCTL_getdomaininfolist sysctl operation. But max_pages can be changed by toolstacks and does not necessarily represent the maximum memory a domain can use during its active lifetime. A better location for determining a domain's maximum memory is the /local/domain/<id>/memory/static-max node in xenstore. This value is set from the libxl_domain_build_info.max_memkb field when creating the domain. Currently it cannot be changed nor can its value be exceeded by a balloon operation. From libvirt's perspective, always reporting maximum memory with virDomainDefGetMemoryTotal() will produce the same results as reading the static-max node in xenstore. Signed-off-by: Jim Fehlig <jfehlig@suse.com> Index: libvirt-2.0.0/src/libxl/libxl_driver.c =================================================================== --- libvirt-2.0.0.orig/src/libxl/libxl_driver.c +++ libvirt-2.0.0/src/libxl/libxl_driver.c @@ -1551,10 +1551,10 @@ libxlDomainGetInfo(virDomainPtr dom, vir if (virDomainGetInfoEnsureACL(dom->conn, vm->def) < 0) goto cleanup; + info->maxMem = virDomainDefGetMemoryTotal(vm->def); if (!virDomainObjIsActive(vm)) { info->cpuTime = 0; info->memory = vm->def->mem.cur_balloon; - info->maxMem = virDomainDefGetMemoryTotal(vm->def); } else { libxl_dominfo_init(&d_info); @@ -1566,7 +1566,6 @@ libxlDomainGetInfo(virDomainPtr dom, vir } info->cpuTime = d_info.cpu_time; info->memory = d_info.current_memkb; - info->maxMem = d_info.max_memkb; libxl_dominfo_dispose(&d_info); } @@ -5078,7 +5077,7 @@ libxlDomainMemoryStats(virDomainPtr dom, goto endjob; } mem = d_info.current_memkb; - maxmem = d_info.max_memkb; + maxmem = virDomainDefGetMemoryTotal(vm->def); LIBXL_SET_MEMSTAT(VIR_DOMAIN_MEMORY_STAT_ACTUAL_BALLOON, mem); LIBXL_SET_MEMSTAT(VIR_DOMAIN_MEMORY_STAT_AVAILABLE, maxmem);
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