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=
</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><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"=
<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 =3D></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 <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, <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, <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=
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=
total &nb= sp;used free shared = buffers cached<br >Mem: 32= 057 31713 344 &nbs=
if (!memoryChecker.evaluate(vds, vm= )) {<br > int hostAavai= lableMem =3D SlaValidator.getInstance().getHostAvailableMemoryLimit(vds);<br >= log.debug("Host '{}' h= as {} MB available. Insufficient memory to run the VM",<br > &nbs=
<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) > mem_available<br ><br >swa=
------=ALIBOUNDARY_26648_4e09c940_568341f3_65a5f 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= 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@redhat.com>Tim= e:2015 Dec 29 (Tue) 20:40To:pc <pc@pcswo.com>Cc:users <users@ovirt.org>, 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@pcswo.com> 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/pipermail/= users/2013-March/013201.htmlhttp://comments.gmane.org/gmane.comp.emulators.ovi= 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= 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 > 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 = ;swap_total < (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 ># free -m<br > = total &= nbsp;used free = ; shared buffers cach= ed<br >Mem: 32057 &n= bsp; 31713 &nb= sp;344 0 = ; 78 &nb= sp;13074<br >-/+ buffers/cache: 18560&= nbsp; 13497<br >Swap: &nbs= p; 29999 5098 &= nbsp; 24901<br ><br >Physical Memory: &= nbsp; &= nbsp; 3= 2057 MB total, 18593 MB used, 13464 MB = ;free<br >Swap Size: = ; = ; 29999= MB total, 5098 MB used, 24901 MB free= <br >Max free Memory for scheduling new VMs:&nbs= p; 21644.5 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 in my case: </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 - </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 > 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);"= form: none; widows: 1; float: none; display: inline !important; background-col= or: rgb(255, 255, 255);">mem_available is </span>344 or <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 the 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 indicated&nbs= p;in the 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 <dfediuck@redhat.com></span></div><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 <pc@pcswo.com></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 <users@o= virt.org>, Golan, Roy <rgolan@redhat.com></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);">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 <<a href=3D"mailto:pc@pcswo.com" target=3D"_blank">pc@pcswo= .com</a>> 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->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 [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>]', shar= edLocks=3D'null'}'<br >INFO [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 [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 [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,$filterName Memory,VAR__DETAIL__SWAP_VALUE_ILLEGAL,SCHEDULING_HOST_FI= LTERED_REASON_WITH_DETAIL<br >INFO [org.ovirt.engine.core.bll.MigrateVmC= ommand] (default task-23) [5916aa3b] Lock freed to object 'EngineLock:{exclusi= veLocks=3D'[73351885-9a92-4317-baaf-e4f2bed1171a=3D<VM, ACTION_TYPE_FAILED_= VM_IS_BEING_MIGRATED$VmName test11>]', sharedLocks=3D'null'}'<br ><br ><br = 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 > = ; vds_id = | physical_mem_mb | mem_commited | vm_active | vm_count | reserv= ed_mem | guest_overhead | transparent_hugepages_state | pending_vmem_size<br >= --------------------------------------+-----------------+--------------+------= -----+----------+--------------+----------------+-----------------------------= +-------------------<br > 688aec34-5630-478e-ae5e-9d57990804e5 | &n= bsp; 32057 | 45836 |&nbs= p; 11 | 11 | = ; 321 | 65 | = ; = 2 | = ;0<br > 2ae3a219-ae9a-4347-b1e2-0e100360231e | = 32057 | 26120 | &= nbsp; 7 | 7 | &nbs= p; 321 | 65 | &nbs= p; = ;2 | 0<br >(2 row= s)<br ><br ><br ><br >### memory ###<br >[n33]<br ># free -m<br > = total used = free shared buffers = cached<br >Mem: 32057 &nbs= p; 31770 287 &nbs= p; 0 41 6347<br >-/= + buffers/cache: 25381 6676<br >= Swap: 29999 10025 = 19974<br ><br >Physical Memory: = ; 32057 MB total, 2564= 6 MB used, 6411 MB free<br >Swap Size: = ; = 29999 MB total, 10025 MB used, 19974 MB free<br >Max free Memory for scheduli= ng new VMs: 1928.5 MB<br ><br ><br >[n34]<br ># free -m<br = p; 0 78 130= 74<br >-/+ buffers/cache: 18560 13497<= br >Swap: 29999 5098 = ; 24901<br ><br >Physical Memory: &nb= sp; 32057 MB to= tal, 18593 MB used, 13464 MB free<br >Swap Size: &n= bsp; &nb= sp; 29999 MB total, 5098 MB used, 24901 MB free<br >Max free Memory for= scheduling new VMs: 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$detailMessage it= s swap value was illegal<br ><br >##from: D:\code\java\ovirt-engine\backend\ma= nager\modules\bll\src\main\java\org\ovirt\engine\core\bll\scheduling\policyuni= ts\MemoryPolicyUnit.java<br >#-----------code--------------1#<br > = ; private boolean isVMSwapValueLegal(VDS host) {<br > &nbs= p; if (!Config.<Boolean> getValue(ConfigValues.EnableSwapCheck)) {<br >&= nbsp; return tr= ue;<br > }<br > &= nbsp; (omitted..)<br > return ((swap_total - swap_f= ree - mem_available) * 100 / physical_mem_mb) <=3D Config.<Integer> g= etValue(ConfigValues.BlockMigrationOnSwapUsagePercentage)<br > (o= mitted..)<br > }<br >#-----------code--------------1#<br >if Enab= leSwapCheck =3D False then return True, so we can simply disable this option? = Any Suggestion?<br ><br >[root@engine ~]# engine-config --get BlockMigrationOn= SwapUsagePercentage<br >BlockMigrationOnSwapUsagePercentage: 0 version: genera= l<br ><br >so,,<br >Config.<Integer> getValue(ConfigValues.BlockMigratio= nOnSwapUsagePercentage) =3D 0<br >so,,<br >(swap_total - swap_free - mem_avail= able) * 100 / physical_mem_mb <=3D 0<br >so,,<br >swap_total - swap_free - = mem_available <=3D 0<br >right?<br >so,, if (swap_total - swap_free) <=3D= mem_available then return True else return False<br ><br ><br >#-----------co= de--------------2#<br > for (VDS vds : hosts) {<br >= if (!isVMSwapValueLegal(vds)) {<br >= log.debug("Host '{}' s= wap value is illegal", vds.getName());<br > = messages.addMessage(vds.getId(), EngineMessage.VAR__DETAI= L__SWAP_VALUE_ILLEGAL.toString());<br > &nbs= p; continue;<br > }<br = p; vds.getName(= ),<br > &= nbsp; hostAavailableMem);<br > = messages.addMessage(vds.getId(), String.format("$availableMem %= 1$d", hostAavailableMem));<br > = ; messages.addMessage(vds.getId(), EngineMessage.VAR__DETAIL__NOT_ENOUG= H_MEMORY.toString());<br > &nb= sp; continue;<br > }<br > = ; (omitted..)<br > }<br= p_used > 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/FreeMemoryCalculation</a><br ><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.html" = target=3D"_blank">http://lists.ovirt.org/pipermail/users/2013-March/013201.htm= 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.emulators.ovirt= .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, </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) <=3D 0<br ><br ></div></div>And in you= r case we see the value is > 0.</div><div class=3D"gmail_extra">This means = that swap_total < (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--