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AIX rootvg mirror is what and how to replace the hard disk, I believe that many inexperienced people are helpless, this article summarizes the causes of the problem and solutions, through this article I hope you can solve this problem.

1. Mirror image

Suppose the host has two hard disks hdisk0 and hdisk1, and the system is installed on hdisk0.

#Clear PVID, not necessary, implemented more secure

chdev -l hdisk1 -a pv=clear

chdev -l hdisk1 -a pv=yes

extendvg rootvg hdisk1

#-S for background synchronization

mirrorvg -S rootvg hdisk1

#View LV STATE, all stales become syncd, indicating synchronization is complete. PPs=2 times LPs, indicating that LV has a mirror image. lg_dumplv is the dumplv of the system, which is generally not mirrored. Mirrorvg will mirror it only when lv and dummlv of the page space are the same lv.

lsvg -l rootvg

#Create a boot record

bosboot -ad /dev/hdisk1

#Set the boot sequence

bootlist -m normal hdisk0 hdisk1

#vg After finishing mirror, quorum will automatically disable to ensure that VG can still automatically varyon after one of the two disks is broken.

lsvg rootvg

#Restart is for quorum disable to take effect

shutdown -Fr

2. Replace hard disk

Suppose hdisk0 fails.

unmirrorvg rootvg hdisk0

#Get guidance information

chpv -c hdisk0

#If lg_dumplv is on hdisk0, move it to hdisk1

migratepv -l lg_dumplv hdisk0 hdisk1

#Remove hdisk0 from rootvg

reducevg rootvg hdisk0

rmdev -Rdl hdisk0

#Check if hdisk0 still exists

lspv

lscfg -vl hdisk0

#Determine hard disk location

#smitty diag>

#Task Selection>

#Hot Plug Task>

#SCSI and SCSI RAID Hot Plug Manager>

#Identify a Device Attached to a SCSI Hot Swap Enclosure Device>

#hdiskX

At this point hdiskX's hard drive will light up red

replace the hard drive

#Identify hard disk

cfgmgr

#The following steps are the same as mirroring, but there is no need to restart, because quorum disable has already taken effect

extendvg rootvg hdisk0

mirrorvg -S rootvg hdisk0

lsvg -l rootvg

bosboot -ad /dev/hdisk0

bootlist -m normal hdisk0 hdisk1

III. About lg_dumplv

#Migration

migratepv -l lg_dumplv hdisk0 hdisk1

#OK, if you want to replace hdsik0, you can also omit step 2

sysdumpdev -Pp /dev/sysdumpnull#reassign the primary dump device

2、rmlv lg_dumplv

3、mklv -t sysdump -y lg_dumplv rootvg 16 hdisk1

sysdumpdev -Pp /dev/lg_dumplv#refers back to the master dump device

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AIX If paging swap and dump device are different, the system does not mirror dump device(The system dump devices "primary /dev/hd6 and secondary /dev/sysdumpnull" should not be mirrored.), The following is the information about the dump device under normal system conditions:

# lsvg -l rootvg

rootvg:

LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT

hd5 boot 1 2 2 closed/syncd N/A

hd6 paging 244 488 2 open/syncd N/A

hd8 jfs2log 1 2 2 open/syncd N/A

hd4 jfs2 8 16 2 open/syncd /

hd2 jfs2 40 80 2 open/syncd /usr

hd9var jfs2 40 80 2 open/syncd /var

hd3 jfs2 16 32 2 open/syncd /tmp

hd1 jfs2 40 80 2 open/syncd /home

hd10opt jfs2 80 160 2 open/syncd /opt

lg_dumplv sysdump 16 16 1 open/syncd N/A

# sysdumpdev -l

primary /dev/lg_dumplv

secondary /dev/sysdumpnull

copy directory /var/adm/ras

forced copy flag TRUE always

allow dump FALSE

dump compression ON

# lslv -l lg_dumplv

lg_dumplv:N/A

PV COPIES IN BAND DISTRIBUTION hdisk0 016:000:000 0% 000:000:000:000:016

After reading the above, do you know what AIX rootvg mirroring is and how to replace a hard drive? If you still want to learn more skills or want to know more related content, welcome to pay attention to the industry information channel, thank you for reading!

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