[ovirt-users] Reply: host xxx did no satisfy internal filter Memory because its swap value was illegal.

Tuesday, 29 December 2015


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Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

Hi Doron,Thank you, I will do things like "swapoff" later.=C2=A01) Just a litt=
le confused about how to caculate the value.###and I quote,----And in your cas=
e we see the value is > 0.This means that=C2=A0swap_total < (swap_free+mem_ava=
ilable) or in generalyour host is swapping.----###data in my case:[n34]#=C2=A0=
free=C2=A0-m=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0total=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0used=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0free=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0shared=C2=A0=C2=A0=
=C2=A0=C2=A0buffers=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0cachedMem:=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A032057=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A03171=
3=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0344=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A00=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A078=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A013074-/+=C2=A0buffers/cache:=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A018560=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A01349=
7Swap:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A029999=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A05098=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A024901Physical=C2=A0=
Memory:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A032057=C2=A0MB=C2=A0total,=C2=A018593=C2=A0MB=C2=A0used,=C2=A0=
13464=C2=A0MB=C2=A0freeSwap=C2=A0Size:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A029999=C2=A0MB=C2=A0total,=C2=A05098=C2=A0MB=C2=A0used,=C2=A024901=C2=A0M=
B=C2=A0freeMax=C2=A0free=C2=A0Memory=C2=A0for=C2=A0scheduling=C2=A0new=C2=A0VM=
s:=C2=A0=C2=A0=C2=A0=C2=A0=C2=A021644.5=C2=A0MB----## formula=C2=A0in my case:=
=C2=A0swap_total -=C2=A0swap_free >=C2=A0mem_available## substituting=C2=A0=3D=
...
swap_total =3D=C2=A029999, =C2=A0swap_free =3D
24901,=C2=A0mem_available =3D = ? (mem_available =C2=A0is=C2=A0344 or=C2=A013497 ?
Obviously=C2=A0the=C2=A0for=
mer value match the fomula, right?)2) suggestionDisable swap on ovirt host sho=
uld be explicit=C2=A0indicated=C2=A0in=C2=A0the=C2=A0document.(for instance: h=
ttp://www.ovirt.org/OVirt_Administration_Guide)--------------------------...
-----------------------------------From:Doron Fediuck <dfediuck(a)redhat.com&gt;Tim=
e:2015 Dec 29 (Tue) 20:40To:pc <pc@pcswo.com>Cc:users <users(a)ovirt.org&gt;,
Golan=
, Roy <rgolan@redhat.com>Subject:Re: [ovirt-users] host xxx did no satisfy int=
ernal filter Memory because its swap value was illegal.On Tue, Dec 29, 2015 at=
 5:54 AM, pc <pc(a)pcswo.com&gt; wrote:[sorry, this is my first time to use mailing=
 list, repost again, with content from html to plain text]### Description ###1=
. problem1) migrate vm {name:xyz001, mem(min, max) =3D (2G,4G)} from ovirt hos=
t n33 to n34, failed.2) shutting down vm {name: test001, mem(min, max) =3D (1G=
,1G)} on n34, update test001's config: Host->Start Running On: Specific(n34), =
then start test001, while, it's running on n33.2. err messageError while execu=
ting action: migrate[engine gui]xyz001:Cannot migrate VM. There is no host tha=
t satisfies current scheduling constraints. See below for details:The host n33=
 did not satisfy internal filter Memory because has availabe 1863 MB memory. I=
nsufficient free memory to run the VM.The host n34 did not satisfy internal fi=
lter Memory because its swap value was illegal.[engine.log]INFO=C2=A0 [org.ovi=
rt.engine.core.bll.MigrateVmCommand] (default task-23) [5916aa3b] Lock Acquire=
d to object 'EngineLock:{exclusiveLocks=3D'[73351885-9a92-4317-baaf-e4f2bed117=
1a=3D<VM, ACTION_TYPE_FAILED_VM_IS_BEING_MIGRATED$VmName test11>]', sharedLock=
s=3D'null'}'INFO=C2=A0
[org.ovirt.engine.core.bll.scheduling.SchedulingManager=
] (default task-23) [5916aa3b] Candidate host 'n34'
('2ae3a219-ae9a-4347-b1e2-=
0e100360231e') was filtered out by 'VAR__FILTERTYPE__INTERNAL' filter
'Memory'=
 (correlation id: null)INFO=C2=A0 [org.ovirt.engine.core.bll.scheduling.Schedu=
lingManager] (default task-23) [5916aa3b] Candidate host 'n33'
('688aec34-5630=
-478e-ae5e-9d57990804e5') was filtered out by 'VAR__FILTERTYPE__INTERNAL'
filt=
er 'Memory' (correlation id: null)WARN=C2=A0 [org.ovirt.engine.core.bll.Migrat=
eVmCommand] (default task-23) [5916aa3b] CanDoAction of action 'MigrateVm' fai=
led for user admin@internal. Reasons: VAR__ACTION__MIGRATE,VAR__TYPE__VM,SCHED=
ULING_ALL_HOSTS_FILTERED_OUT,VAR__FILTERTYPE__INTERNAL,$hostName n33,$filterNa=
me Memory,$availableMem 1863,VAR__DETAIL__NOT_ENOUGH_MEMORY,SCHEDULING_HOST_FI=
LTERED_REASON_WITH_DETAIL,VAR__FILTERTYPE__INTERNAL,$hostName n34,$filterName =
Memory,VAR__DETAIL__SWAP_VALUE_ILLEGAL,SCHEDULING_HOST_FILTERED_REASON_WITH_DE=
TAILINFO=C2=A0 [org.ovirt.engine.core.bll.MigrateVmCommand] (default task-23) =
[5916aa3b] Lock freed to object 'EngineLock:{exclusiveLocks=3D'[73351885-9a92-=
4317-baaf-e4f2bed1171a=3D<VM, ACTION_TYPE_FAILED_VM_IS_BEING_MIGRATED$VmName t=
est11>]', sharedLocks=3D'null'}'3. DCCompatibility Version: 3.54.
ClusterMemor=
y Optimization: For Server Load - Allow scheduling of 150% of physical memoryM=
emory Balloon: Enable Memory Balloon OptimizationEnable KSM: Share memory page=
s across all available memory (best KSM effectivness)5. HOSTname: n33, n34mem:=
 32G6. VM[n33] 11 vms(min, max) =3D (2G,4G) =3D 8(min, max) =3D (2G,8G) =3D 1(=
min, max) =3D (2G,2G) =3D 2total: 22G/44G[n34] 7 vms(min, max) =3D (0.5G,1G) =3D=
 1(min, max) =3D (1G,2G) =3D 1(min, max) =3D (2G,2G) =3D 1(min, max) =3D (2G,4=
G) =3D 3(min, max) =3D (8G,8G) =3D 1total: 17.5G/25G--------------------------=
------------------(min, max) =3D (2G,4G) stands for:Memory Size: 4GPhysical Me=
mory Guaranteed: 2GMemory Balloon Device Enabled: checked---------------------=
-----------------------7. rpm version[root@n33 ~]# rpm -qa |grep vdsmvdsm-yajs=
onrpc-4.16.27-0.el6.noarchvdsm-jsonrpc-4.16.27-0.el6.noarchvdsm-cli-4.16.27-0.=
el6.noarchvdsm-python-zombiereaper-4.16.27-0.el6.noarchvdsm-xmlrpc-4.16.27-0.e=
l6.noarchvdsm-python-4.16.27-0.el6.noarchvdsm-4.16.27-0.el6.x86_64[root@engine=
 ~]# rpm -qa |grep ovirtovirt-release36-001-2.noarchovirt-engine-setup-base-3.=
6.0.3-1.el6.noarchovirt-engine-setup-3.6.0.3-1.el6.noarchovirt-image-uploader-=
3.6.0-1.el6.noarchovirt-engine-wildfly-8.2.0-1.el6.x86_64ovirt-engine-setup-pl=
ugin-vmconsole-proxy-helper-3.6.0.3-1.el6.noarchovirt-host-deploy-1.4.0-1.el6.=
noarchovirt-engine-backend-3.6.0.3-1.el6.noarchovirt-engine-webadmin-portal-3.=
6.0.3-1.el6.noarchovirt-engine-jboss-as-7.1.1-1.el6.x86_64ovirt-engine-lib-3.6=
.0.3-1.el6.noarchovirt-engine-setup-plugin-ovirt-engine-common-3.6.0.3-1.el6.n=
oarchovirt-engine-setup-plugin-ovirt-engine-3.6.0.3-1.el6.noarchovirt-engine-s=
etup-plugin-websocket-proxy-3.6.0.3-1.el6.noarchovirt-engine-sdk-python-3.6.0.=
3-1.el6.noarchovirt-iso-uploader-3.6.0-1.el6.noarchovirt-vmconsole-proxy-1.0.0=
-1.el6.noarchovirt-engine-extensions-api-impl-3.6.0.3-1.el6.noarchovirt-engine=
-websocket-proxy-3.6.0.3-1.el6.noarchovirt-engine-vmconsole-proxy-helper-3.6.0=
.3-1.el6.noarchebay-cors-filter-1.0.1-0.1.ovirt.el6.noarchovirt-host-deploy-ja=
va-1.4.0-1.el6.noarchovirt-engine-tools-3.6.0.3-1.el6.noarchovirt-engine-resta=
pi-3.6.0.3-1.el6.noarchovirt-engine-3.6.0.3-1.el6.noarchovirt-engine-extension=
-aaa-jdbc-1.0.1-1.el6.noarchovirt-engine-cli-3.6.0.1-1.el6.noarchovirt-vmconso=
le-1.0.0-1.el6.noarchovirt-engine-wildfly-overlay-001-2.el6.noarchovirt-engine=
-dbscripts-3.6.0.3-1.el6.noarchovirt-engine-userportal-3.6.0.3-1.el6.noarchovi=
rt-guest-tools-iso-3.6.0-0.2_master.fc22.noarch### DB ###[root@engine ~]# su p=
ostgresbash-4.1$ cd ~bash-4.1$ psql engineengine=3D# select vds_id, physical_m=
em_mb, mem_commited, vm_active, vm_count, reserved_mem, guest_overhead, transp=
arent_hugepages_state, pending_vmem_size from vds_dynamic;=C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 vds_id=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 | physical_mem_mb | mem_commited | vm_active | vm_count | re=
served_mem | guest_overhead | transparent_hugepages_state | pending_vmem_size-=
-------------------------------------+-----------------+--------------+-------=
----+----------+--------------+----------------+-----------------------------+=
-------------------=C2=A0688aec34-5630-478e-ae5e-9d57990804e5 |=C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A032057 |=C2=A0 =C2=A0 =C2=A0 =C2=A0 45836 |=C2=A0 =C2=A0=
 =C2=A0 =C2=A0 11 |=C2=A0 =C2=A0 =C2=A0 =C2=A011 |=C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 321 |=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A065 |=C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A02 |=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A00=C2=A02ae=
3a219-ae9a-4347-b1e2-0e100360231e |=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A032=
057 |=C2=A0 =C2=A0 =C2=A0 =C2=A0 26120 |=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A07 |=C2=
=A0 =C2=A0 =C2=A0 =C2=A0 7 |=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 321 |=C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A065 |=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A02 |=C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A00(2 rows)### memory ###[n33]# fre=
e -m=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0total=C2=A0 =C2=A0 =C2=A0 =
=C2=A0used=C2=A0 =C2=A0 =C2=A0 =C2=A0free=C2=A0 =C2=A0 =C2=A0shared=C2=A0 =C2=A0=
 buffers=C2=A0 =C2=A0 =C2=A0cachedMem:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A032057=C2=
=A0 =C2=A0 =C2=A0 31770=C2=A0 =C2=A0 =C2=A0 =C2=A0 287=C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 0=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A041=C2=A0 =C2=A0 =C2=A0 =C2=A0634=
7-/+ buffers/cache:=C2=A0 =C2=A0 =C2=A0 25381=C2=A0 =C2=A0 =C2=A0 =C2=A06676Sw=
ap:=C2=A0 =C2=A0 =C2=A0 =C2=A0 29999=C2=A0 =C2=A0 =C2=A0 10025=C2=A0 =C2=A0 =C2=
=A0 19974Physical Memory:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 32057 MB total, 25646 MB used, 6411=
 MB freeSwap Size:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 29999 MB total, 10025=
 MB used, 19974 MB freeMax free Memory for scheduling new VMs:=C2=A0 =C2=A0 =C2=
=A01928.5 MB[n34]# free -m=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0tota=
l=C2=A0 =C2=A0 =C2=A0 =C2=A0used=C2=A0 =C2=A0 =C2=A0 =C2=A0free=C2=A0 =C2=A0 =C2=
=A0shared=C2=A0 =C2=A0 buffers=C2=A0 =C2=A0 =C2=A0cachedMem:=C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A032057=C2=A0 =C2=A0 =C2=A0 31713=C2=A0 =C2=A0 =C2=A0 =C2=A0 344=C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 0=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A078=C2=A0 =C2=
=A0 =C2=A0 13074-/+ buffers/cache:=C2=A0 =C2=A0 =C2=A0 18560=C2=A0 =C2=A0 =C2=A0=
 13497Swap:=C2=A0 =C2=A0 =C2=A0 =C2=A0 29999=C2=A0 =C2=A0 =C2=A0 =C2=A05098=C2=
=A0 =C2=A0 =C2=A0 24901Physical Memory:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 32057 MB total, 18593=
 MB used, 13464 MB freeSwap Size:=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 2999=
9 MB total, 5098 MB used, 24901 MB freeMax free Memory for scheduling new VMs:=
=C2=A0 =C2=A0 =C2=A021644.5 MB### code #####from: https://github.com/oVirt/ovi=
rt-enginev3.6.0##from: D:\code\java\ovirt-engine\backend\manager\modules\dal\s=
rc\main\resources\bundles\AppErrors.propertiesVAR__DETAIL__SWAP_VALUE_ILLEGAL=3D=
$detailMessage its swap value was illegal##from: D:\code\java\ovirt-engine\bac=
kend\manager\modules\bll\src\main\java\org\ovirt\engine\core\bll\scheduling\po=
licyunits\MemoryPolicyUnit.java#-----------code--------------1#=C2=A0 =C2=A0 p=
rivate boolean isVMSwapValueLegal(VDS host) {=C2=A0 =C2=A0 =C2=A0 =C2=A0 if (!=
Config.<Boolean> getValue(ConfigValues.EnableSwapCheck)) {=C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 return true;=C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }=C2=A0 =C2=A0 (omitted..)=C2=A0 =C2=A0=
 =C2=A0 =C2=A0 return ((swap_total - swap_free - mem_available) * 100 / physic=
al_mem_mb) <=3D Config.<Integer> getValue(ConfigValues.BlockMigrationOnSwapUsa=
gePercentage)=C2=A0 =C2=A0 (omitted..)=C2=A0 =C2=A0 }#-----------code---------=
-----1#if EnableSwapCheck =3D False then return True, so we can simply disable=
 this option? Any Suggestion?[root@engine ~]# engine-config --get BlockMigrati=
onOnSwapUsagePercentageBlockMigrationOnSwapUsagePercentage: 0 version: general=
so,,Config.<Integer> getValue(ConfigValues.BlockMigrationOnSwapUsagePercentage=
) =3D 0so,,(swap_total - swap_free - mem_available) * 100 / physical_mem_mb <=3D=
 0so,,swap_total - swap_free - mem_available <=3D 0right?so,, if (swap_total -=
 swap_free) <=3D mem_available then return True else return False#-----------c=
ode--------------2#=C2=A0 =C2=A0 =C2=A0 =C2=A0for (VDS vds : hosts) {=C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 if (!isVMSwapValueLegal(vds)) {=C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 log.debug("Host '{}' swap value is
ille=
gal", vds.getName());=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 m=
essages.addMessage(vds.getId(), EngineMessage.VAR__DETAIL__SWAP_VALUE_ILLEGAL.=
toString());=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 continue;=C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 if (!memoryChecker.evaluate(vds, vm)) {=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 int hostAavailableMem =3D SlaValidator.getInstance().getH=
ostAvailableMemoryLimit(vds);=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 log.debug("Host '{}' has {} MB available. Insufficient memory to run
th=
e VM",=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 vds.getName(),=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 hostAavailableMem);=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 messages.addMessage(vds.getId(), String.format("$avai=
lableMem %1$d", hostAavailableMem));=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 messages.addMessage(vds.getId(), EngineMessage.VAR__DETAIL__NOT_=
ENOUGH_MEMORY.toString());=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 continue;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 }=C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 (omitted..)=C2=A0 =C2=A0 =C2=A0 =C2=A0 }#-----------code----=
----------2#!isVMSwapValueLegal then throw exception, right?so,, when we migra=
te vm from n33 to n34, the swap status on n34 actually is:(swap_total - swap_f=
ree) > mem_availableswap_used > mem_available? confused...so,, the logic is:1)=
 check n33: swap[passed], then memory[failed], then goto (for..continue..loop)=
2) check n34: swap[failed], then goto (for..continue..loop)If I have misunders=
tood anything, please let me know.### conclusion ###1) n33 do not have enough =
memory. [yes, I know that.]2) n34 memory is illegal [why and how to solve it?]=
3) what I tried:--change config: BlockMigrationOnSwapUsagePercentage[root@engi=
ne ~]# engine-config --set BlockMigrationOnSwapUsagePercentage=3D75 -cver gene=
ral[root@engine ~]# engine-config --get BlockMigrationOnSwapUsagePercentageBlo=
ckMigrationOnSwapUsagePercentage: 75 version: generalResult: failed.--disable =
EnableSwapCheckHow? Option not found from 'engine-config --list', should I upd=
ate table field direct from db?--disable swap partition on hostShould I do thi=
s operation?--update ovirt-engine?No useful infomation found in latest release=
 note, should I do this operation?### help ###any help would be appreciated.ZY=
XW. Referencehttp://www.ovirt.org/Sla/FreeMemoryCalculationhttp://lists.ovirt.=
org/pipermail/users/2012-November/010858.htmlhttp://lists.ovirt.org/piper...
users/2013-March/013201.htmlhttp://comments.gmane.org/gmane.comp.emulator...
rt.user/19288http://jim.rippon.me.uk/2013/07/ovirt-testing-english-instruction=
s-for.htmlHi,=C2=A0Let me simplify things.We do not allow swapping in general.=
 The reason is that it kills the performanceof all hosts.As you were able to s=
ee in our code (0 is the default config value we have)we expect the following =
expression:swap_total - swap_free - mem_available) * 100 / physical_mem_mb) <=3D=
 0And in your case we see the value is > 0.This means that=C2=A0swap_total < (=
swap_free+mem_available) or in generalyour host is swapping.Since the host is =
swapping, we do not allow to run a VM on it.Let me know if you have any furthe=
r questions.Doron
------=ALIBOUNDARY_26648_4e09c940_568341f3_65a5f
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

<div class=3D"__aliyun_email_body_block"><div style=3D"clear:
both;"><span sty=
le=3D"font-family: Tahoma, Arial, STHeiti, SimSun; font-size: 14px; color: rgb=
(0, 0, 0);">Hi <span style=3D"color: rgb(0, 0, 0); font-family: Tahoma,
Arial,=
 STHeiti, SimSun; font-size: 14px; font-style: normal; font-variant: normal; f=
ont-weight: normal; line-height: 23.324px; text-align: start; text-indent: 0px=
; text-transform: none; widows: 1; float: none; display: inline !important; ba=
ckground-color: rgb(255, 255,
255);">Doron</span>,</span></div><div style=3D"c=
lear: both;"><span style=3D"font-family: Tahoma, Arial, STHeiti, SimSun;
font-=
size: 14px; color: rgb(0, 0, 0);"><br ></span></div><div
style=3D"clear: both;=
"><span style=3D"font-family: Tahoma, Arial, STHeiti, SimSun; font-size:
14px;=
 color: rgb(0, 0, 0);">Thank you, I will do things like "swapoff"
later.</span=
...
</div><div style=3D"clear: both;"><span
style=3D"font-family: Tahoma, Arial, = STHeiti, SimSun; font-size: 14px; color:
rgb(0, 0, 0);">&nbsp;</span></div><di=
v style=3D"clear: both;"><span style=3D"font-family: Tahoma, Arial,
STHeiti, S=
imSun; font-size: 14px; color: rgb(0, 0, 0);">1) Just a little confused about =
how to caculate the value.</span></div><div style=3D"clear:
both;"><span style=
=3D"font-family: Tahoma, Arial, STHeiti, SimSun; font-size: 14px; color: rgb(0=
, 0, 0);">###and I quote,</span></div><div style=3D"clear:
both;"><span style=3D=
"font-family: Tahoma, Arial, STHeiti, SimSun; font-size: 14px; color: rgb(0, 0=
, 0);">----</span></div><div style=3D"clear:
both;"><div class=3D"gmail_extra"=
 style=3D"margin: 0px; padding: 0px; border: 0px; outline: 0px; color: rgb(0, =
0, 0); font-family: Tahoma, Arial, STHeiti, SimSun; font-size: 14px; font-styl=
e: normal; font-variant: normal; font-weight: normal; line-height: 23.324px; t=
ext-align: start; text-indent: 0px; text-transform: none; widows: 1; backgroun=
d-color: rgb(255, 255, 255);">And in your case we see the value is &gt;
0.</di=
v><div class=3D"gmail_extra" style=3D"margin: 0px; padding: 0px;
border: 0px; =
outline: 0px; color: rgb(0, 0, 0); font-family: Tahoma, Arial, STHeiti, SimSun=
; font-size: 14px; font-style: normal; font-variant: normal; font-weight: norm=
al; line-height: 23.324px; text-align: start; text-indent: 0px; text-transform=
: none; widows: 1; background-color: rgb(255, 255, 255);">This means
that&nbsp=
;swap_total &lt; (swap_free+mem_available) or in general</div><div
class=3D"gm=
ail_extra" style=3D"margin: 0px; padding: 0px; border: 0px; outline: 0px; colo=
r: rgb(0, 0, 0); font-family: Tahoma, Arial, STHeiti, SimSun; font-size: 14px;=
 font-style: normal; font-variant: normal; font-weight: normal; line-height: 2=
3.324px; text-align: start; text-indent: 0px; text-transform: none; widows: 1;=
 background-color: rgb(255, 255, 255);">your host is swapping.</div><span
styl=
e=3D"font-family: Tahoma, Arial, STHeiti, SimSun; font-size: 14px; color: rgb(=
0, 0, 0);">----</span></div><div style=3D"clear:
both;"><span style=3D"font-fa=
mily: Tahoma, Arial, STHeiti, SimSun; font-size: 14px; color: rgb(0, 0, 0);">#=
##data in my case:</span></div><div style=3D"clear:
both;"><span style=3D"font=
-family: Tahoma, Arial, STHeiti, SimSun; font-size: 14px; color: rgb(0, 0, 0);=
">[n34]<br >#&nbsp;free&nbsp;-m<br
>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;total&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;used&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;free&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;shared&nbsp;&nbsp;&nbsp;&nbsp;buffers&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;cach=
ed<br
>Mem:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;32057&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;31713&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;344&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;78&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;13074<br
>-/+&nbsp;buffers/cache:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;18560&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;13497<br
>Swap:&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;29999&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5098&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24901<br ><br
>Physical&nbsp;Memory:&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3=
2057&nbsp;MB&nbsp;total,&nbsp;18593&nbsp;MB&nbsp;used,&nbsp;13464&nbsp;MB&nbsp=
;free<br
>Swap&nbsp;Size:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;29999=
&nbsp;MB&nbsp;total,&nbsp;5098&nbsp;MB&nbsp;used,&nbsp;24901&nbsp;MB&nbsp;free=
<br
>Max&nbsp;free&nbsp;Memory&nbsp;for&nbsp;scheduling&nbsp;new&nbsp;VMs:&nbs=
p;&nbsp;&nbsp;&nbsp;&nbsp;21644.5&nbsp;MB</span></div><div
style=3D"clear: bot=
h;"><span style=3D"font-family: Tahoma, Arial, STHeiti, SimSun; font-size:
14p=
x; color: rgb(0, 0, 0);">----</span></div><div style=3D"clear:
both;"><span st=
yle=3D"font-family: Tahoma, Arial, STHeiti, SimSun; font-size: 14px; color: rg=
b(0, 0, 0);"><span style=3D"color: rgb(0, 0, 0); font-family: Tahoma,
Arial, S=
THeiti, SimSun; font-size: 14px; font-style: normal; font-variant: normal; fon=
t-weight: normal; line-height: 23.324px; text-align: start; text-indent: 0px; =
text-transform: none; widows: 1; float: none; display: inline !important; back=
ground-color: rgb(255, 255, 255);">## formula&nbsp;in my
case:&nbsp;</span></s=
pan></div><div style=3D"clear: both;"><span
style=3D"font-family: Tahoma, Aria=
l, STHeiti, SimSun; font-size: 14px; color: rgb(0, 0, 0);"><span
style=3D"colo=
r: rgb(0, 0, 0); font-family: Tahoma, Arial, STHeiti, SimSun; font-size: 14px;=
 font-style: normal; font-variant: normal; font-weight: normal; line-height: 2=
3.324px; text-align: start; text-indent: 0px; text-transform: none; widows: 1;=
 float: none; display: inline !important; background-color: rgb(255, 255, 255)=
;"><span style=3D"color: rgb(0, 0, 0); font-family: Tahoma, Arial,
STHeiti, Si=
mSun; font-size: 14px; font-style: normal; font-variant: normal; font-weight: =
normal; line-height: 23.324px; text-align: start; text-indent: 0px; text-trans=
form: none; widows: 1; float: none; display: inline !important; background-col=
or: rgb(255, 255, 255);">swap_total -&nbsp;</span><span
style=3D"margin: 0px; =
padding: 0px; border: 0px; outline: 0px; color: rgb(0, 0, 0); font-family: Tah=
oma, Arial, STHeiti, SimSun; font-size: 14px; font-style: normal; font-variant=
: normal; font-weight: normal; line-height: 23.324px; text-align: start; text-=
indent: 0px; text-transform: none; widows: 1; float: none; display: inline !im=
portant; background-color: rgb(255, 255, 255);">swap_free
&gt;&nbsp;mem_availa=
ble</span></span></span></div><div style=3D"clear:
both;"><span style=3D"font-=
family: Tahoma, Arial, STHeiti, SimSun; font-size: 14px; color: rgb(0, 0, 0);"=
...
<span style=3D"color: rgb(0, 0, 0); font-family: Tahoma,
Arial, STHeiti, SimS= un; font-size: 14px; font-style: normal; font-variant: normal;
font-weight: no=
rmal; line-height: 23.324px; text-align: start; text-indent: 0px; text-transfo=
rm: none; widows: 1; float: none; display: inline !important; background-color=
: rgb(255, 255, 255);"><span style=3D"margin: 0px; padding: 0px; border:
0px; =
outline: 0px; color: rgb(0, 0, 0); font-family: Tahoma, Arial, STHeiti, SimSun=
; font-size: 14px; font-style: normal; font-variant: normal; font-weight: norm=
al; line-height: 23.324px; text-align: start; text-indent: 0px; text-transform=
: none; widows: 1; float: none; display: inline !important; background-color: =
rgb(255, 255, 255);">##
substituting&nbsp;=3D&gt;</span></span></span></div><d=
iv style=3D"clear: both;"><span style=3D"font-family: Tahoma, Arial,
STHeiti, =
SimSun; font-size: 14px; color: rgb(0, 0, 0);"><span style=3D"color:
rgb(0, 0,=
 0); font-family: Tahoma, Arial, STHeiti, SimSun; font-size: 14px; font-style:=
 normal; font-variant: normal; font-weight: normal; line-height: 23.324px; tex=
t-align: start; text-indent: 0px; text-transform: none; widows: 1; float: none=
; display: inline !important; background-color: rgb(255, 255, 255);">swap_tota=
l =3D&nbsp;<span style=3D"color: rgb(0, 0, 0); font-family: Tahoma, Arial,
STH=
eiti, SimSun; font-size: 14px; font-style: normal; font-variant: normal; font-=
weight: normal; line-height: 23.324px; text-align: start; text-indent: 0px; te=
xt-transform: none; widows: 1; float: none; display: inline !important; backgr=
ound-color: rgb(255, 255, 255);">29999, &nbsp;<span style=3D"color:
rgb(0, 0, =
0); font-family: Tahoma, Arial, STHeiti, SimSun; font-size: 14px; font-style: =
normal; font-variant: normal; font-weight: normal; line-height: 23.324px; text=
-align: start; text-indent: 0px; text-transform: none; widows: 1; float: none;=
 display: inline !important; background-color: rgb(255, 255, 255);">swap_free =
=3D 24901,&nbsp;<span style=3D"color: rgb(0, 0, 0); font-family: Tahoma,
Arial=
, STHeiti, SimSun; font-size: 14px; font-style: normal; font-variant: normal; =
font-weight: normal; line-height: 23.324px; text-align: start; text-indent: 0p=
x; text-transform: none; widows: 1; float: none; display: inline !important; b=
ackground-color: rgb(255, 255, 255);">mem_available =3D ?
</span></span></span=
...
</span></span></div><div style=3D"clear:
both;"><span style=3D"font-family: T= ahoma, Arial, STHeiti, SimSun;
font-size: 14px; color: rgb(0, 0, 0);"><span st=
yle=3D"color: rgb(0, 0, 0); font-family: Tahoma, Arial, STHeiti, SimSun; font-=
size: 14px; font-style: normal; font-variant: normal; font-weight: normal; lin=
e-height: 23.324px; text-align: start; text-indent: 0px; text-transform: none;=
 widows: 1; float: none; display: inline !important; background-color: rgb(255=
, 255, 255);"><span style=3D"color: rgb(0, 0, 0); font-family: Tahoma,
Arial, =
STHeiti, SimSun; font-size: 14px; font-style: normal; font-variant: normal; fo=
nt-weight: normal; line-height: 23.324px; text-align: start; text-indent: 0px;=
 text-transform: none; widows: 1; float: none; display: inline !important; bac=
kground-color: rgb(255, 255, 255);"><span style=3D"color: rgb(0, 0, 0);
font-f=
amily: Tahoma, Arial, STHeiti, SimSun; font-size: 14px; font-style: normal; fo=
nt-variant: normal; font-weight: normal; line-height: 23.324px; text-align: st=
art; text-indent: 0px; text-transform: none; widows: 1; float: none; display: =
inline !important; background-color: rgb(255, 255, 255);"><span
style=3D"color=
: rgb(0, 0, 0); font-family: Tahoma, Arial, STHeiti, SimSun; font-size: 14px; =
font-style: normal; font-variant: normal; font-weight: normal; line-height: 23=
.324px; text-align: start; text-indent: 0px; text-transform: none; widows: 1; =
float: none; display: inline !important; background-color: rgb(255, 255, 255);=
">(<span style=3D"color: rgb(0, 0, 0); font-family: Tahoma, Arial,
STHeiti, Si=
mSun; font-size: 14px; font-style: normal; font-variant: normal; font-weight: =
normal; line-height: 23.324px; text-align: start; text-indent: 0px; text-trans=
form: none; widows: 1; float: none; display: inline !important; background-col=
or: rgb(255, 255, 255);">mem_available &nbsp;is&nbsp;</span>344
or&nbsp;<span =
style=3D"color: rgb(0, 0, 0); font-family: Tahoma, Arial, STHeiti, SimSun; fon=
t-size: 14px; font-style: normal; font-variant: normal; font-weight: normal; l=
ine-height: 23.324px; text-align: start; text-indent: 0px; text-transform: non=
e; widows: 1; float: none; display: inline !important; background-color: rgb(2=
55, 255, 255);">13497 ? Obviously&nbsp;the&nbsp;former value match the
fomula,=

right?)</span></span></span></span></span></span></div><div
style=3D"clear: b=
oth;"><br ></div><div style=3D"clear: both;">2)
suggestion</div><div style=3D"=
clear: both;">Disable swap on ovirt host should be
explicit&nbsp;indicated&nbs=
p;in&nbsp;the&nbsp;document.(for instance: http://www.ovirt.org/OVirt_Administ=
ration_Guide)</div><div style=3D"clear: both;"><span
style=3D"font-family: Tah=
oma, Arial, STHeiti, SimSun; font-size: 14px; color: rgb(0, 0, 0);"><br
></spa=
n></div><div style=3D"clear: both;"><span
style=3D"font-family: Tahoma, Arial,=
 STHeiti, SimSun; font-size: 14px; color: rgb(0, 0, 0);"><br
></span></div><di=
v style=3D"clear: both;"><span style=3D"font-family: Tahoma, Arial,
STHeiti, S=
imSun; font-size: 14px; color: rgb(0, 0, 0);"><br
></span></div><blockquote st=
yle=3D"margin-right: 0px; margin-top: 0px; margin-bottom: 0px;"><div
style=3D"=
clear: both;"><span style=3D"font-family: Tahoma, Arial, STHeiti, SimSun;
font=
-size: 14px; color: rgb(0, 0, 0);">-------------------------------------------=
-----------------------</span></div><div style=3D"clear:
both;"><span style=3D=
"font-family: Tahoma, Arial, STHeiti, SimSun; font-size: 14px; color: rgb(0, 0=
, 0);">From:Doron Fediuck
&amp;lt;dfediuck(a)redhat.com&amp;gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=3D=
"clear: both;"><span style=3D"font-family: Tahoma, Arial, STHeiti,
SimSun; fon=
t-size: 14px; color: rgb(0, 0, 0);">Time:2015 Dec 29 (Tue)
20:40</span></div><=
div style=3D"clear: both;"><span style=3D"font-family: Tahoma, Arial,
STHeiti,=
 SimSun; font-size: 14px; color: rgb(0, 0, 0);">To:pc
&amp;lt;pc(a)pcswo.com&amp;gt;&lt;/sp=
an></div><div style=3D"clear: both;"><span
style=3D"font-family: Tahoma, Arial=
, STHeiti, SimSun; font-size: 14px; color: rgb(0, 0, 0);">Cc:users
&lt;users@o=
virt.org&gt;, Golan, Roy
&amp;lt;rgolan(a)redhat.com&amp;gt;&lt;/span&gt;&lt;/div&gt;&lt;div style=3D"c=
lear: both;"><span style=3D"font-family: Tahoma, Arial, STHeiti, SimSun;
font-=
size: 14px; color: rgb(0, 0, 0);">Subject:Re: [ovirt-users] host xxx did no sa=
tisfy internal filter Memory because its swap value was
illegal.</span></div><=
div style=3D"clear: both;"><span style=3D"font-family: Tahoma, Arial,
STHeiti,=
 SimSun; font-size: 14px; color: rgb(0, 0, 0);"><br
></span></div><div ><br ><=
div class=3D"gmail_extra"><br ><div
class=3D"gmail_quote">On Tue, Dec 29, 2015=
 at 5:54 AM, pc &lt;<a href=3D"mailto:pc@pcswo.com"
target=3D"_blank">pc@pcswo=
.com</a>&gt; wrote:<br >[sorry, this is my first time to use mailing list,
rep=
ost again, with content from html to plain text]<br ><br >### Description
###<=
br >1. problem<br >1) migrate vm {name:xyz001, mem(min, max) =3D (2G,4G)} from=
 ovirt host n33 to n34, failed.<br >2) shutting down vm {name: test001, mem(mi=
n, max) =3D (1G,1G)} on n34, update test001's config: Host-&gt;Start Running O=
n: Specific(n34), then start test001, while, it's running on n33.<br ><br
>2. =
err message<br >Error while executing action: migrate<br >[engine gui]<br
>xyz=
001:<br >Cannot migrate VM. There is no host that satisfies current scheduling=
 constraints. See below for details:<br >The host n33 did not satisfy internal=
 filter Memory because has availabe 1863 MB memory. Insufficient free memory t=
o run the VM.<br >The host n34 did not satisfy internal filter Memory because =
its swap value was illegal.<br ><br ><br >[engine.log]<br
>INFO&nbsp; [org.ovi=
rt.engine.core.bll.MigrateVmCommand] (default task-23) [5916aa3b] Lock Acquire=
d to object 'EngineLock:{exclusiveLocks=3D'[73351885-9a92-4317-baaf-e4f2bed117=
1a=3D&lt;VM, ACTION_TYPE_FAILED_VM_IS_BEING_MIGRATED$VmName test11&gt;]',
shar=
edLocks=3D'null'}'<br >INFO&nbsp;
[org.ovirt.engine.core.bll.scheduling.Schedu=
lingManager] (default task-23) [5916aa3b] Candidate host 'n34'
('2ae3a219-ae9a=
-4347-b1e2-0e100360231e') was filtered out by 'VAR__FILTERTYPE__INTERNAL'
filt=
er 'Memory' (correlation id: null)<br >INFO&nbsp;
[org.ovirt.engine.core.bll.s=
cheduling.SchedulingManager] (default task-23) [5916aa3b] Candidate host 'n33'=
 ('688aec34-5630-478e-ae5e-9d57990804e5') was filtered out by
'VAR__FILTERTYPE=
__INTERNAL' filter 'Memory' (correlation id: null)<br >WARN&nbsp;
[org.ovirt.e=
ngine.core.bll.MigrateVmCommand] (default task-23) [5916aa3b] CanDoAction of a=
ction 'MigrateVm' failed for user admin@internal. Reasons: VAR__ACTION__MIGRAT=
E,VAR__TYPE__VM,SCHEDULING_ALL_HOSTS_FILTERED_OUT,VAR__FILTERTYPE__INTERNAL,$h=
ostName n33,$filterName Memory,$availableMem 1863,VAR__DETAIL__NOT_ENOUGH_MEMO=
RY,SCHEDULING_HOST_FILTERED_REASON_WITH_DETAIL,VAR__FILTERTYPE__INTERNAL,$host=
Name n34,$filterName Memory,VAR__DETAIL__SWAP_VALUE_ILLEGAL,SCHEDULING_HOST_FI=
LTERED_REASON_WITH_DETAIL<br >INFO&nbsp; [org.ovirt.engine.core.bll.MigrateVmC=
ommand] (default task-23) [5916aa3b] Lock freed to object 'EngineLock:{exclusi=
veLocks=3D'[73351885-9a92-4317-baaf-e4f2bed1171a=3D&lt;VM, ACTION_TYPE_FAILED_=
VM_IS_BEING_MIGRATED$VmName test11&gt;]', sharedLocks=3D'null'}'<br
><br ><br =
...
3. DC<br >Compatibility Version: 3.5<br ><br >4.
Cluster<br >Memory Optimizat= ion: For Server Load - Allow scheduling of 150%
of physical memory<br >Memory =
Balloon: Enable Memory Balloon Optimization<br >Enable KSM: Share memory pages=
 across all available memory (best KSM effectivness)<br ><br >5. HOST<br
>name=
: n33, n34<br >mem: 32G<br ><br >6. VM<br >[n33] 11 vms<br
>(min, max) =3D (2G=
,4G) =3D 8<br >(min, max) =3D (2G,8G) =3D 1<br >(min, max) =3D (2G,2G) =3D
2<b=
r >total: 22G/44G<br ><br >[n34] 7 vms<br >(min, max) =3D (0.5G,1G)
=3D 1<br >=
(min, max) =3D (1G,2G) =3D 1<br >(min, max) =3D (2G,2G) =3D 1<br >(min, max)
=3D=
 (2G,4G) =3D 3<br >(min, max) =3D (8G,8G) =3D 1<br >total: 17.5G/25G<br
>-----=
---------------------------------------<br >(min, max) =3D (2G,4G) stands for:=
<br >Memory Size: 4G<br >Physical Memory Guaranteed: 2G<br >Memory
Balloon Dev=
ice Enabled: checked<br >--------------------------------------------<br
><br =
...
7. rpm version<br >[root@n33 ~]# rpm -qa |grep vdsm<br
>vdsm-yajsonrpc-4.16.2= 7-0.el6.noarch<br
>vdsm-jsonrpc-4.16.27-0.el6.noarch<br >vdsm-cli-4.16.27-0.el=
6.noarch<br >vdsm-python-zombiereaper-4.16.27-0.el6.noarch<br
>vdsm-xmlrpc-4.1=
6.27-0.el6.noarch<br >vdsm-python-4.16.27-0.el6.noarch<br
>vdsm-4.16.27-0.el6.=
x86_64<br ><br >[root@engine ~]# rpm -qa |grep ovirt<br
>ovirt-release36-001-2=
.noarch<br >ovirt-engine-setup-base-3.6.0.3-1.el6.noarch<br
>ovirt-engine-setu=
p-3.6.0.3-1.el6.noarch<br >ovirt-image-uploader-3.6.0-1.el6.noarch<br
>ovirt-e=
ngine-wildfly-8.2.0-1.el6.x86_64<br >ovirt-engine-setup-plugin-vmconsole-proxy=
-helper-3.6.0.3-1.el6.noarch<br >ovirt-host-deploy-1.4.0-1.el6.noarch<br
>ovir=
t-engine-backend-3.6.0.3-1.el6.noarch<br >ovirt-engine-webadmin-portal-3.6.0.3=
-1.el6.noarch<br >ovirt-engine-jboss-as-7.1.1-1.el6.x86_64<br
>ovirt-engine-li=
b-3.6.0.3-1.el6.noarch<br >ovirt-engine-setup-plugin-ovirt-engine-common-3.6.0=
.3-1.el6.noarch<br >ovirt-engine-setup-plugin-ovirt-engine-3.6.0.3-1.el6.noarc=
h<br >ovirt-engine-setup-plugin-websocket-proxy-3.6.0.3-1.el6.noarch<br
>ovirt=
-engine-sdk-python-3.6.0.3-1.el6.noarch<br >ovirt-iso-uploader-3.6.0-1.el6.noa=
rch<br >ovirt-vmconsole-proxy-1.0.0-1.el6.noarch<br
>ovirt-engine-extensions-a=
pi-impl-3.6.0.3-1.el6.noarch<br >ovirt-engine-websocket-proxy-3.6.0.3-1.el6.no=
arch<br >ovirt-engine-vmconsole-proxy-helper-3.6.0.3-1.el6.noarch<br
>ebay-cor=
s-filter-1.0.1-0.1.ovirt.el6.noarch<br >ovirt-host-deploy-java-1.4.0-1.el6.noa=
rch<br >ovirt-engine-tools-3.6.0.3-1.el6.noarch<br
>ovirt-engine-restapi-3.6.0=
.3-1.el6.noarch<br >ovirt-engine-3.6.0.3-1.el6.noarch<br
>ovirt-engine-extensi=
on-aaa-jdbc-1.0.1-1.el6.noarch<br >ovirt-engine-cli-3.6.0.1-1.el6.noarch<br
>o=
virt-vmconsole-1.0.0-1.el6.noarch<br >ovirt-engine-wildfly-overlay-001-2.el6.n=
oarch<br >ovirt-engine-dbscripts-3.6.0.3-1.el6.noarch<br
>ovirt-engine-userpor=
tal-3.6.0.3-1.el6.noarch<br >ovirt-guest-tools-iso-3.6.0-0.2_master.fc22.noarc=
h<br ><br ><br >### DB ###<br >[root@engine ~]# su postgres<br
>bash-4.1$ cd ~=
<br >bash-4.1$ psql engine<br >engine=3D# select vds_id, physical_mem_mb,
mem_=
commited, vm_active, vm_count, reserved_mem, guest_overhead, transparent_hugep=
ages_state, pending_vmem_size from vds_dynamic;<br >&nbsp; &nbsp; &nbsp;
&nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; vds_id&nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; | physical_mem_mb | mem_commited | vm_active | vm_count | reserv=
ed_mem | guest_overhead | transparent_hugepages_state | pending_vmem_size<br >=
--------------------------------------+-----------------+--------------+------=
-----+----------+--------------+----------------+-----------------------------=
+-------------------<br >&nbsp;688aec34-5630-478e-ae5e-9d57990804e5 |&nbsp;
&n=
bsp; &nbsp; &nbsp; &nbsp; &nbsp;32057 |&nbsp; &nbsp; &nbsp;
&nbsp; 45836 |&nbs=
p; &nbsp; &nbsp; &nbsp; 11 |&nbsp; &nbsp; &nbsp; &nbsp;11
|&nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; 321 |&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp;65 |&nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp;=
 &nbsp; &nbsp;2 |&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp=
;0<br >&nbsp;2ae3a219-ae9a-4347-b1e2-0e100360231e |&nbsp; &nbsp;
&nbsp; &nbsp;=
 &nbsp; &nbsp;32057 |&nbsp; &nbsp; &nbsp; &nbsp; 26120 |&nbsp;
&nbsp; &nbsp; &=
nbsp; &nbsp;7 |&nbsp; &nbsp; &nbsp; &nbsp; 7 |&nbsp; &nbsp;
&nbsp; &nbsp; &nbs=
p; 321 |&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;65
|&nbsp; &nbsp; &nbs=
p; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp=
;2 |&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp;0<br >(2 row=
s)<br ><br ><br ><br >### memory ###<br >[n33]<br >#
free -m<br >&nbsp; &nbsp;=
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;total&nbsp; &nbsp;
&nbsp; &nbsp;used&nbsp; =
&nbsp; &nbsp; &nbsp;free&nbsp; &nbsp; &nbsp;shared&nbsp;
&nbsp; buffers&nbsp; =
&nbsp; &nbsp;cached<br >Mem:&nbsp; &nbsp; &nbsp; &nbsp;
&nbsp;32057&nbsp; &nbs=
p; &nbsp; 31770&nbsp; &nbsp; &nbsp; &nbsp; 287&nbsp; &nbsp;
&nbsp; &nbsp; &nbs=
p; 0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;41&nbsp; &nbsp;
&nbsp; &nbsp;6347<br >-/=
+ buffers/cache:&nbsp; &nbsp; &nbsp; 25381&nbsp; &nbsp; &nbsp;
&nbsp;6676<br >=
Swap:&nbsp; &nbsp; &nbsp; &nbsp; 29999&nbsp; &nbsp; &nbsp;
10025&nbsp; &nbsp; =
&nbsp; 19974<br ><br >Physical Memory:&nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
32057 MB total, 2564=
6 MB used, 6411 MB free<br >Swap Size:&nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp;=
 29999 MB total, 10025 MB used, 19974 MB free<br >Max free Memory for scheduli=
ng new VMs:&nbsp; &nbsp; &nbsp;1928.5 MB<br ><br ><br
>[n34]<br ># free -m<br =
...
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp;total&nbsp; &nbsp; &nbsp; &nb= sp;used&nbsp;
&nbsp; &nbsp; &nbsp;free&nbsp; &nbsp; &nbsp;shared&nbsp;
&nbsp; =
buffers&nbsp; &nbsp; &nbsp;cached<br >Mem:&nbsp; &nbsp;
&nbsp; &nbsp; &nbsp;32=
057&nbsp; &nbsp; &nbsp; 31713&nbsp; &nbsp; &nbsp; &nbsp;
344&nbsp; &nbsp; &nbs=
p; &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; &nbsp;
&nbsp;78&nbsp; &nbsp; &nbsp; 130=
74<br >-/+ buffers/cache:&nbsp; &nbsp; &nbsp; 18560&nbsp; &nbsp;
&nbsp; 13497<=
br >Swap:&nbsp; &nbsp; &nbsp; &nbsp; 29999&nbsp; &nbsp;
&nbsp; &nbsp;5098&nbsp=
; &nbsp; &nbsp; 24901<br ><br >Physical Memory:&nbsp; &nbsp;
&nbsp; &nbsp; &nb=
sp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; 32057 MB to=
tal, 18593 MB used, 13464 MB free<br >Swap Size:&nbsp; &nbsp; &nbsp;
&nbsp; &n=
bsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp; &nb=
sp; &nbsp; 29999 MB total, 5098 MB used, 24901 MB free<br >Max free Memory for=
 scheduling new VMs:&nbsp; &nbsp; &nbsp;21644.5 MB<br ><br ><br
><br >### code=
 ###<br >##from: <a href=3D"https://github.com/oVirt/ovirt-engine"
target=3D"_=
blank">https://github.com/oVirt/ovirt-engine</a><br >v3.6.0<br
><br >##from: D=
:\code\java\ovirt-engine\backend\manager\modules\dal\src\main\resources\bundle=
s\AppErrors.properties<br >VAR__DETAIL__SWAP_VALUE_ILLEGAL=3D$detailMessage it=
s swap value was illegal<br ><br >##from:
D:\code\java\ovirt-engine\backend\ma=
nager\modules\bll\src\main\java\org\ovirt\engine\core\bll\scheduling\policyuni=
ts\MemoryPolicyUnit.java<br >#-----------code--------------1#<br >&nbsp;
&nbsp=
; private boolean isVMSwapValueLegal(VDS host) {<br >&nbsp; &nbsp;
&nbsp; &nbs=
p; if (!Config.&lt;Boolean&gt; getValue(ConfigValues.EnableSwapCheck)) {<br
>&=
nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; return tr=
ue;<br >&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; }<br >&nbsp; &=
nbsp; (omitted..)<br >&nbsp; &nbsp; &nbsp; &nbsp; return
((swap_total - swap_f=
ree - mem_available) * 100 / physical_mem_mb) &lt;=3D Config.&lt;Integer&gt;
g=
etValue(ConfigValues.BlockMigrationOnSwapUsagePercentage)<br >&nbsp; &nbsp;
(o=
mitted..)<br >&nbsp; &nbsp; }<br
>#-----------code--------------1#<br >if Enab=
leSwapCheck =3D False then return True, so we can simply disable this option? =
Any Suggestion?<br ><br >[root@engine ~]# engine-config --get
BlockMigrationOn=
SwapUsagePercentage<br >BlockMigrationOnSwapUsagePercentage: 0 version: genera=
l<br ><br >so,,<br >Config.&lt;Integer&gt;
getValue(ConfigValues.BlockMigratio=
nOnSwapUsagePercentage) =3D 0<br >so,,<br >(swap_total - swap_free -
mem_avail=
able) * 100 / physical_mem_mb &lt;=3D 0<br >so,,<br >swap_total -
swap_free - =
mem_available &lt;=3D 0<br >right?<br >so,, if (swap_total - swap_free)
&lt;=3D=
 mem_available then return True else return False<br ><br ><br
>#-----------co=
de--------------2#<br >&nbsp; &nbsp; &nbsp; &nbsp;for (VDS vds :
hosts) {<br >=
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if
(!isVMSwapValueLegal(vds)) {<br >=
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
log.debug("Host '{}' s=
wap value is illegal", vds.getName());<br >&nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; messages.addMessage(vds.getId(),
EngineMessage.VAR__DETAI=
L__SWAP_VALUE_ILLEGAL.toString());<br >&nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbs=
p; &nbsp; &nbsp; continue;<br >&nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; }<br =
...
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if
(!memoryChecker.evaluate(vds, vm= )) {<br >&nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; int hostAavai=
lableMem =3D SlaValidator.getInstance().getHostAvailableMemoryLimit(vds);<br >=
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
log.debug("Host '{}' h=
as {} MB available. Insufficient memory to run the VM",<br >&nbsp;
&nbsp; &nbs=
p; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; vds.getName(=
),<br >&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp; &=
nbsp; &nbsp; hostAavailableMem);<br >&nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp;=
 &nbsp; &nbsp; messages.addMessage(vds.getId(), String.format("$availableMem
%=
1$d", hostAavailableMem));<br >&nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nbsp=
; &nbsp; messages.addMessage(vds.getId(), EngineMessage.VAR__DETAIL__NOT_ENOUG=
H_MEMORY.toString());<br >&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
&nbsp; &nbsp; &nb=
sp; continue;<br >&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
}<br >&nbsp; &nbsp=
; &nbsp; &nbsp; &nbsp; &nbsp; (omitted..)<br >&nbsp; &nbsp;
&nbsp; &nbsp; }<br=
...
<br >#-----------code--------------2#<br
>!isVMSwapValueLegal then throw exc= eption, right?<br >so,, when we
migrate vm from n33 to n34, the swap status on=
 n34 actually is:<br >(swap_total - swap_free) &gt; mem_available<br
><br >swa=
p_used &gt; mem_available? confused...<br ><br >so,, the logic is:<br
>1) chec=
k n33: swap[passed], then memory[failed], then goto (for..continue..loop)<br >=
2) check n34: swap[failed], then goto (for..continue..loop)<br ><br >If I
have=
 misunderstood anything, please let me know.<br ><br ><br ><br
>### conclusion=
 ###<br >1) n33 do not have enough memory. [yes, I know that.]<br >2) n34
memo=
ry is illegal [why and how to solve it?]<br >3) what I tried:<br >--change
con=
fig: BlockMigrationOnSwapUsagePercentage<br >[root@engine ~]# engine-config --=
set BlockMigrationOnSwapUsagePercentage=3D75 -cver general<br >[root@engine ~]=
# engine-config --get BlockMigrationOnSwapUsagePercentage<br >BlockMigrationOn=
SwapUsagePercentage: 75 version: general<br ><br >Result: failed.<br
><br >--d=
isable EnableSwapCheck<br >How? Option not found from 'engine-config
--list', =
should I update table field direct from db?<br ><br ><br >--disable swap
parti=
tion on host<br >Should I do this operation?<br ><br >--update
ovirt-engine?<b=
r >No useful infomation found in latest release note, should I do this operati=
on?<br ><br ><br >### help ###<br >any help would be
appreciated.<br ><br >ZYX=
W. Reference<br ><a
href=3D"http://www.ovirt.org/Sla/FreeMemoryCalculation" ta=
rget=3D"_blank">http://www.ovirt.org/Sla/FreeMemoryCalculati...
><a href=
=3D"http://lists.ovirt.org/pipermail/users/2012-November/010858.html"
target=3D=
"_blank">http://lists.ovirt.org/pipermail/users/2012-November/010858.html</a><=
br ><a
href=3D"http://lists.ovirt.org/pipermail/users/2013-March/013201.htm... =
target=3D"_blank">http://lists.ovirt.org/pipermail/users/201...
l</a><br ><a
href=3D"http://comments.gmane.org/gmane.comp.emulators.ovirt.user=
/19288"
target=3D"_blank">http://comments.gmane.org/gmane.comp.emula...
.user/19288</a><br ><a
href=3D"http://jim.rippon.me.uk/2013/07/ovirt-testing-e=
nglish-instructions-for.html"
target=3D"_blank">http://jim.rippon.me.uk/2013/0=
7/ovirt-testing-english-instructions-for.html</a><br ><br ><div
><br ></div><d=
iv >Hi,&nbsp;</div><div >Let me simplify things.</div><div
><br ></div><div >W=
e do not allow swapping in general. The reason is that it kills the performanc=
e</div><div >of all hosts.</div><div ><br
></div><div >As you were able to see=
 in our code (0 is the default config value we have)</div><div >we expect the
=
following expression:</div><div ><br ></div><div >swap_total
- swap_free - mem=
_available) * 100 / physical_mem_mb) &lt;=3D 0<br ><br
></div></div>And in you=
r case we see the value is &gt; 0.</div><div
class=3D"gmail_extra">This means =
that&nbsp;swap_total &lt; (swap_free+mem_available) or in
general</div><div cl=
ass=3D"gmail_extra">your host is swapping.</div><div
class=3D"gmail_extra"><br=
...
</div><div class=3D"gmail_extra">Since the host
is swapping, we do not allow=  to run a VM on it.</div><div
class=3D"gmail_extra"><br ></div><div class=3D"g=
mail_extra">Let me know if you have any further questions.</div><div
class=3D"=
gmail_extra">Doron</div></div></blockquote><div ><br
></div></div>
------=ALIBOUNDARY_26648_4e09c940_568341f3_65a5f--

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[ovirt-users] Reply: host xxx did no satisfy internal filter Memory because its swap value was illegal.