AIX上移除和替换硬盘的标准步骤Word文档下载推荐.docx

AIX上移除和替换硬盘的标准步骤Word文档下载推荐.docx

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2.Removethephysicalvolumefromthevolumegroup.

3.Removethedefinitionforthediskfromthedeviceconfigurationdatabase.

Thesestepsareoutlinedinmoredetailinsubsequentsections.

Ifthereisjustonediskinthevolumegroup,proceedtothenextsection,"

Howtoproceedifthevolumegrouphasjustonedisk."

Otherwise,proceedtothesectionentitled"

Deallocatingphysicalpartitionsfromthedisk."

Howtoproceedifthevolumegrouphasjustonedisk

Ifthedrivetobereplacedistheonlydriveinthevolumegroup,thenremovethevolumegroupdefinitionwith:

exportvg<

VGname>

Atthispoint,removethediskdefinitionusingthermdevcommand.Detailsareincludedinthesection"

Removingthediskdefinitionfromthesystem"

inthisdocument.

Checkingtoseewhatquorumissetto

Ifyourvolumegroupismirrored,youcouldhavedisabledquorum.ThepurposeofquorumisexplainedintheIBMRedbook:

LVM:

IntroductionandConcepts.Hereisanexcerpt:

AquorumisavoteofthenumberofVolumeGroupDescriptorAreasandVolumeGroupStatusAreas（VGDA/VGSA）thatareactive.Aquorumensuresdataintegrityintheeventofadiskfailure.EachphysicaldiskinavolumegrouphasatleastoneVGDA/VGSA.Whenavolumegroupiscreatedontoasingledisk,itinitiallyhastwoVGDA/VGSAareasresidingonthedisk.Ifavolumegroupconsistsoftwodisks,onediskstillhastwoVGDA/VGSAareas,buttheotherdiskhasoneVGDA/VGSA.Whenthevolumegroupismadeupofthreeormoredisks,theneachdiskisallocatedoneVGDA/VGSA.

AquorumislostwhenenoughdisksandtheirVGDA/VGSAareasareunreachablesothata51%majorityofVGDA/VGSAareasnolongerexists.Inatwo-diskvolumegroup,ifthediskwithonlyoneVGDA/VGSAislost,aquorumstillexistsbecausetwoofthethreeVGDA/VGSAareasstillarereachable.IfthediskwithtwoVGDA/VGSAareasislost,thisstatementisnolongertrue.Themoredisksthatmakeupavolumegroup,thelowerthechancesofquorumbeinglostwhenonediskfails.

lsvgtestvg-->

checktoseeifQuorumissetto1

VOLUMEGROUP:

testvgVGIDENTIFIER:

00097c7f00004c00000000f4a163bc7b

VGSTATE:

activePPSIZE:

16megabyte（s）

VGPERMISSION:

read/writeTOTALPPs:

1084（17344megabytes）

MAXLVs:

256FREEPPs:

998（15968megabytes）

LVs:

12USEDPPs:

86（1376megabytes）

OPENLVs:

9QUORUM:

1

TOTALPVs:

2VGDESCRIPTORS:

3

STALEPVs:

1STALEPPs:

ACTIVEPVs:

2AUTOON:

yes

MAXPPsperPV:

2032MAXPVs:

16

Ifreplacingthediskdriveimmediately,thenyoumaynothavetoturnquorumbackon.Themirrorvgcommandautomaticallyturnsquorumoffandtheunmirrorvgcommandautomaticallyturnsquorumon.Ifyouaredealingwithrootvg,theonlywaytohaveachangeinquorumtakeeffect,istoreboot.Ifthisisanon-rootvgvolumegroup,quorumcanbechangedbyvaryingoffthevolumegroupandthenvaryingitbackon.Tochangequorumfromthecommandline,runthefollowing:

chvg-Qnvgname-->

turnsquorumoff

chvg-Qyvgname-->

turnsquorumon

Inordertovaryoffavolumegroup,unmountallfilesystemsandmakesurealllogicalvolumesareinaclosedstate.Enter:

lsvg-ltestvg

LVNAMETYPELPsPPsPVsLVSTATEMOUNTPOINT

testlvjfs2111closed/sync'

d/testfs

loglv00jfs2log111closed/sync'

dN/A

Onceallthelogicalvolumesareclosed,runthefollowing:

varyoffvgvgname

varyonvgvgname

Thenewquorumchangewillbeineffect.

Deallocatingphysicalpartitionsfromthedisk

Everyphysicalpartition（PP）onthediskallocatedtoanylogicalvolume（LV）,includingfilesystemsorpagingspaces,mustbedeallocated,eitherbymovingthecontentsofthosePPstoanotherdiskorbyremovingthem.

TodeterminewhatlogicalvolumeshavePPsallocatedtothatdisk,run:

lspv-l<

hdisk#>

Ifthehdisknamenolongerexists,andthediskisidentifiableonlybyits16-digitPVID（youmightseethisfromtheoutputoflsvg-p<

）,substitutethePVIDforthediskname.Forexample:

lspv-l0123456789abcdef

Youmayreceivethefollowingerror:

0516-320:

Physicalvolume00001165a97b10c6isnotassignedto

avolumegroup.

Ifso,runthefollowingcommand:

putlvodm-p`getlvodm-v<

`<

PVID>

VGnamereferstoyourvolumegroup,PVIDreferstothe16-digitphysicalvolumeidentifier,andthecharactersaroundthegetlvodmcommandaregravemarks,thebackwardsinglequotemark.Thelspv-l<

commandshouldnowrunsuccessfully.

Ifanotherdiskinthevolumegrouphasspacetocontainthepartitionsonthisdisk,andthedisktobereplacedhasnotfailed,themigratepvcommandmaybeusedtomovetheusedPPsonthisdisk.Seethemanpageforthemigratepvcommandonthestepstodothis.

Ifthepartitionscannotbemigrated,theymustberemoved.Theoutputofthelspv-l<

orlspv-l<

commandindicateswhatlogicalvolumeswillbeaffected.RunthefollowingcommandoneachLV:

lslv<

LVname>

TheCOPIESfieldshowsiftheLVismirrored.Ifso,removethefailedcopywith:

rmlvcopy<

1<

hdisk#referstoallthedisksinthecopythatcontainthefaileddisk.Alistofdrivescanbespecifiedwithaspacebetweeneach.Usethelslv-m<

commandtoseewhatotherdisksmayneedtobelistedinthermlvcopycommand.IfthediskPVIDwaspreviouslyusedwiththelspvcommand,specifythatPVIDinthelistofdisksgiventothermlvcopycommand.AtAIXVersion4.2.1orhigher,theunmirrorvgcommandmaybeusedinlieuofthermlvcopycommand.Seethemanpagesforrmlvcopyandunmirrorvg,orotherdocumentation,foradditionalinformation.

IftheLVisnotmirrored,theentirelogicalvolumemustberemoved,evenifjustonephysicalpartitionresidesonthedrivetobereplacedandcannotbemigratedtoanotherdisk.IftheunmirroredLVisaJFSfilesystem,unmountthefilesystemandremoveit.Enter:

umount/<

fsname>

rmfs/<

Iftheunmirroredlogicalvolumeisapagingspace,seeifitisactive.Enter:

lsps-a

Ifitisactive,setittobeinactiveonthenextreboot.Enter:

chps-an<

Afteryoureboot,removeitbyentering:

rmps<

Removeanyotherunmirroredlogicalvolumewiththefollowingcommand:

rmlv<

NOTE:

IftheLVisservingasadumpdevice,thedumppointermustfirstbereassigned.ThesameistrueiftheLVwasmirroredandthecopyisbeingremoved.Checkthedumppointersbyentering:

sysdumpdev-l

Reassignthedumppointers.Enter:

sysdumpdev-Pp/dev/sysdumpnull 

（fortheprimarydevice）

sysdumpdev-Ps/dev/sysdumpnull 

（forthesecondarydevice）

Thepointerscanbereassignedtotheappropriatelogicalvolumeafteritisrecreated.

Deletingthediskfromthevolumegroup

UsingeitherthePVIDorthehdiskname,dependingonwhichwasusedwhenrunninglspv-l<

intheprecedingdiscussion,runoneofthefollowing:

reducevg-f<

<

IfyouusedthePVIDvalueandifthereducevgcommandcomplainsthatthePVIDisnotinthedeviceconfigurationdatabase,runthefollowingcommandtoseeifthediskwasindeedsuccessfullyremoved:

lsvg-p<

IfthePVIDordiskisnotlistedatthispoint,thenignoretheerrorsfromthereducevgcommand.

Removingthediskdefinitionfromthesystem

Removethehdisk.Enter:

rmdev-dl<

IfthediskwasanSSAdisk,deletethepdisk.Enter:

pdisk#>

IfthediskwasanSSAdisk,determinewhichpdisknumbercorrespondstothehdisk.Theeasiestwaytodothisisbyusingthessaxlatecommands.Enterthefollowing:

ssaxlate-lhdisk#-->

showsthepdisk#（s）definition

ssaxlate-lpdisk#-->

showsthehdisk#definition

Anotherwaytodothisiswiththefollowingcommands:

lsdev-Ccdisk-Fname'

'

connwhere

lsdev-Ccpdisk-Fname'

SeewhichSSAdiskserialnumbercoincideswiththehdisktoremove.Ifthehdiskdoesnotappear,oriftheuserhasbeenworkingwithaPVIDvalueuptothispoint,thepdiskwhoseserialnumberdoesnotcoincidewithanyofthehdisksislikelytobethedisktoremove.OtherSSAcommandsmightprovideadditionalinformation.ConsulttheSSAdocumentation.

IfyouhavebeenworkingwithaPVIDvalueratherthanwithanhdiskname,ensurethatthePVIDisremovedfromtheODMwiththefollowingcommand.The32-digitvaluesuppliedconsistsofthePVIDplus16zeros.Forexample:

odmdelete-qvalue=0073659c2c6d26f100000000000