Archive for the ‘AIX’ Category
Posted by Emerson Takahashi on November 29, 2011
I had several logical volumes that were presenting a weird error
root@aix:/ # rmlvcopy lvpooldom01001 1
0516-622 rmlvcopy: Warning, cannot write lv control block data.
I tried to migrate the logical volume off the disk
root@cvrdalebk01:/ # migratepv -l lvpooldom01001 hdisk3
0516-076 lmigratelv: Cannot remove last good copy of stale partition.
Resynchronize the partitions with syncvg and try again.
0516-812 migratepv: Warning, migratepv did not completely succeed;
all physical partitions have not been moved off the PV.
But it was not completed successfully
root@aix:/ # lsvg -l tsm01vg
tsm01vg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
lvtsm jfs2 32 32 1 open/syncd /tsm
loglv00 jfs2log 1 1 1 open/syncd N/A
lvtsmdborig01 jfs 512 512 1 open/syncd N/A
lvtsmdborig02 jfs 512 512 1 open/syncd N/A
lvtsmlogorig01 jfs 256 256 1 open/syncd N/A
lvtsmdbmirr01 jfs 512 512 1 open/syncd N/A
lvtsmdbmirr02 jfs 512 512 1 open/syncd N/A
lvtsmlogmirr01 jfs 256 256 1 open/syncd N/A
0516-1147 : Warning – logical volume lvpooldom01001 may be partially mirrored.
lvpooldom01001 raw 512 666 11 closed/stale N/A
So I ended up removing the logical volumes
root@aix:/ # rmlv lvpooldom01001
Warning, all data contained on logical volume lvpooldom01001 will be destroyed.
rmlv: Do you wish to continue? y(es) n(o)? y
rmlv: Logical volume lvpooldom01001 is removed.
root@aix:/ # rmlv -f lvpooldom01003
rmlv: Logical volume lvpooldom01003 is removed.
root@aix:/ # rmlv -f lvpooldom01004
rmlv: Logical volume lvpooldom01004 is removed.
root@aix:/ # rmlv -f lvpooldom01005
rmlv: Logical volume lvpooldom01005 is removed.
And then recreating them
root@aix:/ # mklv -t raw -y lvpooldom01001 tsm01vg 512
lvpooldom01001
Here is the status. No warning was displayed
root@aix:/ # lsvg -l tsm01vg | grep lvpooldom01001
lvpooldom01001 raw 512 512 1 closed/syncd N/A
Posted in AIX | Tagged: mklv, rmlv | Leave a Comment »
Posted by Emerson Takahashi on July 11, 2011
If you see this error message
root@aix:/ # errpt -a
0315-180 logread: UNEXPECTED EOF
0315-171 Unable to process the error log file /var/adm/ras/errlog.
0315-132 The supplied error log is not valid: /var/adm/ras/errlog.
And the log file is zeroed
root@aix:/ # ls -l /var/adm/ras/errlog
-rw-rw-r– 1 root system 0 Mar 14 09:38 /var/adm/ras/errlog
root@aix:/ # errclear 0
0315-180 logread: UNEXPECTED EOF
0315-171 Unable to process the error log file /var/adm/ras/errlog.
0315-132 The supplied error log is not valid: /var/adm/ras/errlog.
Stop the error logging, remove the file and then restart it again
root@aix:/ # /usr/lib/errstop
root@aix:/ # rm /var/adm/ras/errlog
root@aix:/ # /usr/lib/errdemon
root@aix:/ # ls -l /var/adm/ras/errlog
-rw-rw-r– 1 root system 123404 Jul 11 14:33 /var/adm/ras/errlog
Posted in AIX | Tagged: errpt | Leave a Comment »
Posted by Emerson Takahashi on August 10, 2010
Run iostat and check the column % tm_act. For seven times, it will display the statistics every two seconds
root@aix5:/ # iostat -d hdisk2 2 7
System configuration: lcpu=6 disk=4
Disks: % tm_act Kbps tps Kb_read Kb_wrtn
hdisk2 85.2 3453.1 303.8 37734456 8731944
hdisk2 51.0 610.0 84.5 796 424
hdisk2 34.5 288.0 45.5 436 140
hdisk2 39.5 452.0 63.5 692 212
hdisk2 61.5 380.0 66.0 480 280
hdisk2 48.5 542.0 66.5 596 488
hdisk2 47.0 590.0 80.0 1020 160
Posted in AIX | Tagged: aix, iostat | Leave a Comment »
Posted by Emerson Takahashi on August 9, 2010
Lists all the subsystems on AIX’s System Resource Controller and then look for the subsystem that you want. In this example, I’ll restart sshd
root@aix:/ # lssrc -a | grep ssh
sshd ssh 340158 active
Issue the command to stop sshd
root@aix:/ # stopsrc -s sshd
0513-044 The sshd Subsystem was requested to stop.
Then start it
root@aix:/ # startsrc -s sshd
0513-059 The sshd Subsystem has been started. Subsystem PID is 340162.
Posted in AIX | Tagged: aix | Leave a Comment »
Posted by Emerson Takahashi on August 9, 2010
First you need to know which filesystem that you’ll resize. Get the logical volume
root@aix:/ # df -m /u04
Filesystem MB blocks Free %Used Iused %Iused Mounted on
/dev/lvcrnstore 34816.00 1892.34 95% 103 1% /u04
With this information you type lslv lvcrnstore to find out about the volume group that this logical group is part of. Check if there are FREE PPs to extend the filesystem
root@aix:/ # lsvg oraclevg
VOLUME GROUP: oraclevg VG IDENTIFIER: 000d400c00004c00000000fd81379ca3
VG STATE: active PP SIZE: 256 megabyte(s)
VG PERMISSION: read/write TOTAL PPs: 531 (135936 megabytes)
MAX LVs: 256 FREE PPs: 17 (4352 megabytes)
LVs: 15 USED PPs: 514 (131584 megabytes)
OPEN LVs: 14 QUORUM: 2
TOTAL PVs: 1 VG DESCRIPTORS: 2
STALE PVs: 0 STALE PPs: 0
ACTIVE PVs: 1 AUTO ON: yes
MAX PPs per PV: 1016 MAX PVs: 32
LTG size: 128 kilobyte(s) AUTO SYNC: no
HOT SPARE: no BB POLICY: relocatable
Resize the filesystem and check the new size
root@aix:/ # chfs -a size=+4G /u04
Filesystem size changed to 79691776
root@aix:/ # df -m /u04
Filesystem MB blocks Free %Used Iused %Iused Mounted on
/dev/lvcrnstore 38912.00 5987.71 85% 103 1% /u04
Notice that the number of free PPs decreased since you used to increase the filesystem
root@aix:/ # lsvg oraclevg
VOLUME GROUP: oraclevg VG IDENTIFIER: 000d400c00004c00000000fd81379ca3
VG STATE: active PP SIZE: 256 megabyte(s)
VG PERMISSION: read/write TOTAL PPs: 531 (135936 megabytes)
MAX LVs: 256 FREE PPs: 1 (256 megabytes)
LVs: 15 USED PPs: 530 (135680 megabytes)
OPEN LVs: 14 QUORUM: 2
TOTAL PVs: 1 VG DESCRIPTORS: 2
STALE PVs: 0 STALE PPs: 0
ACTIVE PVs: 1 AUTO ON: yes
MAX PPs per PV: 1016 MAX PVs: 32
LTG size: 128 kilobyte(s) AUTO SYNC: no
HOT SPARE: no BB POLICY: relocatable
Posted in AIX | Tagged: aix, chfs, lsvg | Leave a Comment »
Posted by Emerson Takahashi on July 29, 2010
hscroot@localhost:~> vtmenu
Retrieving name of managed system(s) . . . 10D400C
———————————————————-
Partitions On Managed System: 10D400C
———————————————————-
1) LPAR1 Not Available:
2) LPAR2 Not Available:
Enter Number of Running Partition (q to quit): q
Bye.
The server with the two LPAR partions were shut down due to a electric maintenance. I tried to start the partitions but I was having this problem:
hscroot@localhost:~> chsysstate -r lpar -m 10D400C -o on -n LPAR1
Unable to lock the Service Processor. Perform one of the following steps: (1) Check serial cable connection; (2) Check if another Console is communicating with the Service Processor; (3) Perform the Release Lock task; (4) Perform Rebuild task to re-establish the connection.
I tried again and I got a different error.
hscroot@localhost:~> chsysstate -r lpar -m 10D400C -o on -n LPAR1
Command sent to Service Processor failed. Error Response 4.
To reboot the IBM HMC, type the command below
hscroot@localhost:~> hmcshutdown -t now -r
Broadcast message from root (Sun Jun 6 08:35:38 2010):
The system is going down for reboot NOW!
I had problems with the reboot and asked to power off and power on the HMC. After that I had no more problems.
Posted in AIX, Hardware, HMC | Tagged: hmc, ibm | Leave a Comment »
Posted by Emerson Takahashi on July 23, 2010
First you need to check some information for your system on the HMC. Issue the command vtmenu to get the managed system ID and the names of the partitions
hscroot@localhost:~> vtmenu
Retrieving name of managed system(s) . . . 108F19C
———————————————————-
Partitions On Managed System: 108F19C
———————————————————-
1) MANUFACTURING Running:
2) RETAIL Running:
Enter Number of Running Partition (q to quit): q
Bye.
On this example I tried to soft reset the partition called MANUFACTURING
hscroot@localhost:~> chsysstate -m 108F19C -r lpar -n MANUFACTURING -o reset
Since it didn’t work out as expected, I decided to power off the LPAR
hscroot@localhost:~> chsysstate -m 108F19C -r lpar -n MANUFACTURING -o off
hscroot@localhost:~> vtmenu
Retrieving name of managed system(s) . . . 108F19C
———————————————————-
Partitions On Managed System: 108F19C
———————————————————-
1) MANUFACTURING Ready:
2) RETAIL Running:
Enter Number of Running Partition (q to quit): q
Bye.
I turned the partition on and after that it worked flawlessly
hscroot@localhost:~> chsysstate -r lpar -m 108F19C -o on -n MANUFACTURING
hscroot@localhost:~> vtmenu
Retrieving name of managed system(s) . . . 108F19C
———————————————————-
Partitions On Managed System: 108F19C
———————————————————-
1) MANUFACTURING Starting:
2) RETAIL Running:
Enter Number of Running Partition (q to quit): q
Bye.
Posted in AIX, Hardware, HMC | Tagged: aix, hmc, power4 | Leave a Comment »
Posted by Emerson Takahashi on July 13, 2010
To check account properties you use the command lsuser and specify what property you want to see.
Checking if an account is locked
root@aix:/ # lsuser -a account_locked emerson
emerson account_locked=false
To calculate when was the last time an user logged in to the server, you will need to convert the time displayed. Use the command below to convert.
root@aix:/ # lsuser -a time_last_login emerson
emerson time_last_login=1279036180
root@aix:/ # perl -we ‘print(my $time = localtime 1279036180, “\n”)’
Tue Jul 13 10:49:40 2010
Posted in AIX | Tagged: aix, lsuser | Leave a Comment »
Posted by Emerson Takahashi on March 5, 2010
This AIX server has a disk array connected.
root@aix:/ # lscfg -vl hdisk2
hdisk2 U0.1-P2-I3/Z3-A0 SCSI RAID 5 Disk Array
The array has 7 physical disks
root@aix:/ # lsdev -C | grep pdisk
pdisk0 Available 1A-08-01-0,0 Physical SCSI Disk Drive
pdisk1 Available 1A-08-01-1,0 Physical SCSI Disk Drive
pdisk2 Available 1A-08-01-2,0 Physical SCSI Disk Drive
pdisk3 Available 1A-08-01-3,0 Physical SCSI Disk Drive
pdisk4 Available 1A-08-01-4,0 Physical SCSI Disk Drive
pdisk5 Available 1A-08-01-5,0 Physical SCSI Disk Drive
pdisk6 Available 1A-08-01-6,0 Physical SCSI Disk Drive
Connected through a PCI-X SCSI RAID adapter
root@aix:/ # lscfg -vl sisioa0
sisioa0 U0.1-P2-I3 PCI-X Dual Channel U320 SCSI RAID Adapter
PCI-X Dual Channel Ultra320 SCSI RAID Adapter:
Part Number……………..97P3960
FRU Number………………97P3960
Serial Number……………YL10C4077074
Manufacture ID…………..000C
EC Level………………..0
ROM Level.(alterable)…….0709000c
Product Specific.(Z0)…….5703
Product Specific.(Z1)…….1
Device Specific.(YL)……..U0.1-P2-I3
When we checked the status we saw that the array was running in degraded state.
root@aix:/ #sisraidmgr -L -j1 -l sisioa0
————————————————————————
Name Location State Description Size
————————————————————————
sisioa0 1A-08 Available PCI-X Dual Channel U320 SCSI RAID Adapter
scsi2 1A-08-00-07,0 NoLink No remote adapter target
scsi3 1A-08-01-07,0 NoLink No remote adapter target
hdisk2 1A-08-ff-0,0 Degraded RAID 5 Array 428.0GB
pdisk0 1A-08-01-0,0 Active Array Member 71.4GB
pdisk1 1A-08-01-1,0 Active Array Member 71.4GB
pdisk2 1A-08-01-2,0 Active Array Member 71.4GB
pdisk3 1A-08-01-3,0 Active Array Member 71.4GB
pdisk4 1A-08-01-4,0 Active Array Member 71.4GB
pdisk5 1A-08-01-5,0 Active Array Member 71.4GB
pdisk6 1A-08-01-6,0 Active Array Member 71.4GB
hdisk0 1A-08-00-10,0 Available 16 Bit LVD SCSI 146.8GB
hdisk1 1A-08-00-11,0 Available 16 Bit LVD SCSI 146.8GB
Posted in AIX, Hardware | Tagged: aix, diskarray, Hardware | Leave a Comment »
Emerson Takahashi
