What is the AIX rootvg image and how to replace the hard drive
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!
