Radek's IT Blog

How to map network share UNC as link on disk on Windows

2022-03-04T16:14:00.004+01:00

Great tip:

mklink /D C:\myLink \\server\c$

TSM: ANR8985E The drive xxx in library xxx is using an encryption method that is incompatible with the current server settings.

2020-04-15T14:29:00.001+02:00

I have faced confusing error message:

ANR8985E The drive xxx in library xxx is using an encryption method that is incompatible with the current server settings.

The root case of error was that I defined device class explicitly with parameter DRIVEEncryption and value OFF.
There was impact even I did not use encryption on library and its drives.

Drive was encryption capable but not enabled on library:
[root@tsm1 ITDT]# ./itdt -f /dev/IBMtape0 encryption
Getting drive encryption settings...
Encryption settings:

Drive Encryption Capable... Yes
Encryption Method.......... Library
Encryption State........... NA
Exit with code: 0

So I changed DRIVEEncryption to ALLOW (default) even I did not use encryption and error message disappeared and volume got mounted...

define devclass IBMTAPE01WORM LIBRary=IBMTAPE01 DEVTYPE=LTO FORMAT=ULTRIUM8C WORM=YES MOUNTLimit=DRIVES DRIVEEncryption=ALLOW LBProtect=READWrite

TSM: Replicate Node fails with ANR9999D_2930690409 and rc=1120

2019-02-22T09:43:00.000+01:00

I have had a problem when running replicate node between two TSM / Spectrum Protect servers, replication failed with nothing saying error message ANR9999D_2930690409 and rc=1120.

02/12/2019 12:30:47 ANR9999D_2930690409 SmReplServerSession(smrepl.c:2609) Thread<1537>: Replication session 246 for TSM on Linux/x86_64 failed, rc=1120 (SESSION: 246)
02/12/2019 12:30:47 ANR9999D Thread<1537> issued message 9999 from: (SESSION: 246)

Root cause was missing archive copy group on target server, wow, one may think that this could be common configuration mistake when configuring replication, but IBM doesn't think so when showing message which You can not understand :)

You can compare and validate policies on source and replication servers by command:

VALIDATE REPLPOLICY TARGET_TSM_SERVER_NAME

AIX: How to determine / identify volume serial for Infinibox (Infinidat) w/o HPT

2018-08-08T15:27:00.001+02:00

How to list / identify serial number of volume from Infinibox (Infinidat) without Host Power Tools?

This command can be used to determine / list serial number of disk located on Infinibox in AIX:

for i in `lsdev -Cc disk | grep INFINIDAT | awk '{ print $1}'`
do
echo $i "\c"
lsattr -El $i -a unique_id | awk '{ print $2 }' | cut -c 5-34
done

Enjoy IT!

TSM: ANS0338E An invalid operation was attempted on a node on target server with replication

2018-01-23T08:11:00.000+01:00

Error message "ANS0338E An invalid operation was attempted on a node" can be related to state of node on TSM server - node can be replicated to target server and has to be removed from replication by command "remove replnode nodename".

IBM PowerVM: lsmap for NPIV readeable output

2018-01-11T23:49:00.001+01:00

lsmap -all -npiv is not readeable so I found nice command:

lsmap -all -npiv -field "VFC client name" "FC name" Status Name ClntName -fmt :
vfchost0: : :fcs0:NOT_LOGGED_IN
vfchost1: : :fcs0:NOT_LOGGED_IN
vfchost2: : :fcs0:NOT_LOGGED_IN
vfchost3: : :fcs0:NOT_LOGGED_IN

Linux: How to display PCI devices topology

2017-10-11T11:45:00.001+02:00

[user@hostname ~]# lspci -tv
-+-[0007:80]-+-00.0 Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe
|           +-00.1 Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe
|           +-00.2 Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe
|           \-00.3 Broadcom Corporation NetXtreme BCM5719 Gigabit Ethernet PCIe
+-[0005:50]---00.0 Texas Instruments TUSB73x0 SuperSpeed USB 3.0 xHCI Host Controller
+-[0004:01]---00.0 Mellanox Technologies MT27600 [Connect-IB]
+-[0003:70]---00.0 IBM PCI-E IPR SAS Adapter (ASIC)
+-[0000:01]---00.0 Mellanox Technologies MT27520 Family [ConnectX-3 Pro]
\-[0000:00]-

Brocade SAN incoming SSH authentication not working - ssh login without password: wrong permissions on authorized_keys file

2016-11-24T09:41:00.002+01:00

I have faced issue in FOS v7.4.1d that incoming SSH authentication (ssh login without password) did not work, even I have configured regarding to Brocade manual:
http://www.brocade.com/content/html/en/administration-guide/fos-741-adminguide/GUID-6FE6380F-52C8-4C5F-A69E-23EE7DB57E65.html

The root cause of problem was in permissions on authorized_keys on Brocade SAN SW:

Login as root user:
ssh root@SANSW

Change directory to: /fabos/users/admin/.ssh
SANSW:root> cd /fabos/users/admin/.ssh

and list permisisons
SANSW:root> ls -la
total 32
drwxr-xr-x   2 root     admin        4096 Nov 13 17:27 ./
drwxr-xr-x   3 root     admin        4096 Sep 8 17:30 ../
-rw-r--r--   1 root     admin       10240 Nov 13 17:27 authorizedKeys.tar
-rw-------   1 root     admin         392 Nov 13 17:27 authorized_keys
-rw-------   1 root     admin         392 Nov 13 17:27 authorized_keys.admin
-rw-r--r--   1 root     admin         134 Jul 15 01:09 environment
Change permissions of authorized_keys.admin file for user admin:
SANSW:root> chmod g+r,a+r authorized_keys.admin
SANSW:root> ls -la
total 32
drwxr-xr-x   2 root     admin        4096 Nov 13 17:27 ./
drwxr-xr-x   3 root     admin        4096 Sep 8 17:30 ../
-rw-r--r--   1 root     admin       10240 Nov 13 17:27 authorizedKeys.tar
-rw-------   1 root     admin         392 Nov 13 17:27 authorized_keys
-rw-r--r--   1 root     admin         392 Nov 13 17:27 authorized_keys.admin
-rw-r--r--   1 root     admin         134 Jul 15 01:09 environment

AIX: How to synchronize more PP/LP in parallel by LVM NUM_PARALLEL_LPS

2015-11-19T10:20:00.007+01:00

Command syncvg can be customized to synchronize different number of LPs in parallel
syncvg -p <#>

If you use mirrorvg you can set environment variable NUM_PARALLEL_LPS before running command:

export NUM_PARALLEL_LPS=<#>

Value <#> can be number in range of 1-32

AIX: devscan reporting and diagnostic tool for SAN devices

2015-07-20T14:00:00.000+02:00

Are you looking for reporting and diagnostic tool for SAN devices on AIX?

Lets try IBM support tool called devscan which can report for each LUN:

ODM name and status
PVID, if there is one
Device type
Capacity and block size
SCSI status
Reservation status, both SCSI-2 and SCSI-3
ALUA status
Time to service a SCSI Read

Source and download:
https://www-304.ibm.com/support/docview.wss?uid=aixtoolsc9e095f

AIX: How to get CPU / processor socket and core count for IBM Power server

2015-04-01T16:49:00.003+02:00

Here is the command for AIX which shows you the count of processor cards (sockets) installed in your Power server including information about count of cores per one socket. The terminology processor in IBM Power server and AIX world describes core in relation to HW.

Command:
lscfg -vp|grep WAY

Example:
lscfg -vp|grep WAY
      6-WAY PROC CUOD:
      6-WAY PROC CUOD:

Expample shows you that system has two sockets and each has 6 cores, so system has 12 cores.

Do you need to know how many cores - virtual processors are assigned to your LPAR?
This is little bit complicated, because depends on mode (Dedicated, Shared, ...), but generally command lparstat can helps you:

# lparstat -i | egrep "Type|Mode|CPU"
Type                                       : Shared-SMT-4 => LPAR shares processor resources in pool
Mode                                       : Uncapped => LPAR can use cores up to value of "Online Virtual CPUs"
Online Virtual CPUs                        : 3 => maximum number of cores which can be utilized
Maximum Virtual CPUs                       : 6 => maximum number of cores which can be added to using DLPAR
Minimum Virtual CPUs                       : 1 => minimum number of cores which can be removed to using DLPAR
Maximum Physical CPUs in system            : 12 => total number of cores installed in the system
Active Physical CPUs in system             : 12 => total number of cores installed in the system
Active CPUs in Pool                        : 12 => number of active cores in particular pool
Shared Physical CPUs in system             : 12 => number of cores in all pools
Physical CPU Percentage                    : 10.00%
Memory Mode                                : Dedicated
Desired Virtual CPUs                       : 3 => number of virtual processors which are assigned during startup
Power Saving Mode                          : Disabled
Sub Processor Mode                         : -

lsdev command shows you count of virtual processors allocated to your LPAR.
# lsdev -Cc processor
proc0 Available 00-00 Processor
proc4 Available 00-04 Processor
proc8 Available 00-08 Processor

Do you need to know how many threads - logical processors do you have in your LPAR / AIX?

# smtctl

This system is SMT capable.
This system supports up to 4 SMT threads per processor.
SMT is currently enabled.
SMT boot mode is not set.
SMT threads are bound to the same virtual processor.

proc0 has 4 SMT threads.
Bind processor 0 is bound with proc0
Bind processor 1 is bound with proc0
Bind processor 2 is bound with proc0
Bind processor 3 is bound with proc0

proc4 has 4 SMT threads.
Bind processor 4 is bound with proc4
Bind processor 5 is bound with proc4
Bind processor 6 is bound with proc4
Bind processor 7 is bound with proc4

proc8 has 4 SMT threads.
Bind processor 8 is bound with proc8
Bind processor 9 is bound with proc8
Bind processor 10 is bound with proc8
Bind processor 11 is bound with proc8

We have 12 logical processors - threads, four threads per one virtual processor - core.

AIX: How to determine / identify volume UID from Storwize / SVC

2015-02-20T11:41:00.003+01:00

How to list / identify volume ID UID from Storwize / SVC?

This command can be used to determine / list volume UID of disk located on Storwize / SVC in AIX:

for i in `lsdev -t 2145 | awk '{ print $1}'`
do
echo $i "\c"
lsattr -El $i -a unique_id | awk '{ print $2 }' | cut -c 6-37
done

or for MPIO without HAS and SDDPCM:

for i in `lsdev -t mpioosdisk | awk '{ print $1}'`
do
echo $i "\c"
lsattr -El $i -a unique_id | awk '{ print $2 }' | cut -c 6-37
done

You get volume UID which can be used to identify disk on Storwize / SVC in GUI or running command lsvdisk.

lsvdisk -filtervalue vdisk_UID=60050111111111111000000000000002

Enjoy IT!

PowerVM: network outage during fallback in SEA load sharing environment

2014-06-12T07:49:00.001+02:00

Problem summary

In a dual VIOS setup where SEA is configured in load sharing
mode and backup SEA is created over etherchannel in IEEE802.3d
mode. Rebooting backup VIOS will result in VIO client
communication loss for  30 seconds.

Problem conclusion

A new SEA attribute "adapter_reset" is added. Setting its value
to "no" will handle SEA physical adapter reset logic in
backup VIOS.

Fix

1. Find SEA device and note down its entX device name 
        lsdev -c adapter | grep "Shared Ethernet Adapter" 

2. Say, ent8 is SEA device, change its attribute: 
        chdev -l ent8 -a adapter_reset=no

Source:

IBM Support web site:

http://www-01.ibm.com/support/docview.wss?uid=isg1IV55925

TSM: Why are backups going to tape instead of disk

2014-03-28T15:48:00.000+01:00

Technote (troubleshooting)

Problem(Abstract)

Tivoli Storage Manager TSM Client backups and/or archives may go to a tape pool although the management class used sends data to a disk pool

Cause

DISK pool is not available or does not have free space or data size exceeds threshold.

Resolving the problem

TSM Client backups and/or archives are directed to particular storage pool via the "copy destination" field of the backup or archive copygroup of the management class used for the operation. For example, assuming the following backup copygroup settings for the below management class :

 
 Policy Domain Name: STANDARD 
 Policy Set Name: active 
 Mgmt Class Name: UNIX 
 Copy Group Name: STANDARD 
 Copy Group Type: Backup 
 Copy Destination: BACKUPPOOL

And assuming the following configuration for the BACKUPPOOL storage pool :

 
 Storage Pool Name: BACKUPPOOL
 Storage Pool Type: Primary
 Device Class Name: DISK
 Estimated Capacity: 400.0 G
 Maximum Size Threshold: 10G
 Next Storage Pool: TAPEPOOL

A Tivoli Storage Management client using the above management class for a backup operation may back up the data directly to the TAPEPOOL instead of the BACKUPPOOL under the following conditions :

Backup data size exceeds 10GB.
If the client data ( file ) size is greater than 10GB, the backup of such data will go to TAPEPOOL directly. This is controlled by the "Maximum Size Threshold" parameter.
Backup data size exceeds BACKUPPOOL free space
If the client data size is greater than the BACKUPPOOL free space, or if the BACKUPPOOL storage pool is full, such backup will go to TAPEPOOL directly. Migration may be used to free up some space.
BACKUPPOOL is unavailable or readonly. Verify the access of the storage pool with "Q STG F=D" which must be readwrite and verify the BACKUPPOOL storage pool volumes are also online. Use the Q VOL F=D command to verify this.

Source: IBM Technote http://www-01.ibm.com/support/docview.wss?uid=swg21266633

DS8000: Code (Firmware) Recommendation

2013-11-19T16:34:00.002+01:00

DS8000 Code Recommendation can be found here:
http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004456&myns=s028&mynp=OCST8NCA&mynp=OCSTXN8P&mynp=OCSTUVMB&mynp=OCHW2C2&mynp=OCHW2B2&mync=E

Power: PowerVM 2.2.3 enhancement announcement

2013-11-19T16:32:00.001+01:00

IBM PowerVM version 2.2.3 has been enhanced with the following:
Shared Storage Pools have been enhanced to help improve flexibility, scalability, and resiliency. These improvements include:

mirroring of the storage pool
dynamic contraction of the storage pool
dynamic disk growth within the storage pool
scaling improvements

Live Partition Mobility performance has been enhanced, giving clients more business flexibility by allowing workloads to move faster between servers.

The Virtual I/O Server's Performance Advisor has been enhanced to provide support for NPIV and Fibre Channel, Virtual Networking and Shared Ethernet Adapter, and Shared Storage Pool configurations.

The PowerVM Enterprise Edition now includes PowerVP™ , a new graphical monitor that provides intelligence to understand the mapping of virtualized workloads to physical hardware. This allows Power® virtualized systems to be optimized and easily monitored to pinpoint performance bottlenecks.

Simplified Shared Ethernet Adapter Failover configuration setup. This simplification removes the requirement to configure a control channel for redundant shared Ethernet adapters and has a prerequisite on firmware 7.8, or higher, which is available on selected Power Systems . For further details of supported machine model types, visit https://www-304.ibm.com/webapp/set2/sas/f/power5cm/power7.html

Shared Ethernet Adapter changes include the enablement of the largesend attribute of Shared Ethernet Adapter by default, and two new device attributes to manage Shared Ethernet Adapter Failover behavior.

Improved virtual Ethernet link status reporting.

AIX: How to list disk size using getconf

2013-10-09T21:34:00.001+02:00

Disk size in AIX can be listed by this command:

for i in `lsdev -Cc disk | awk '{print $1}'`
do
echo "$i \c"
getconf DISK_SIZE /dev/$i
done

TSM: Basic - Extended Edition: drive and storage slots limit

2013-09-10T17:51:00.000+02:00

For IBM Tivoli Storage Manager version 5.4 and later, to use a library with greater than 4 drives or greater than 48 storage slots, IBM Tivoli Storage Manager Extended Edition is required.

AIX: migratepv 0516-404 allocp: This system cannot fulfill the allocation request

2013-09-06T22:56:00.003+02:00

I have faced issue with migratepv command.
I wanted to migrate PPs from hdisk3 to hdisk2 in same scalable volume group.
Command has failed even there were enough PPs on hdisk2.

migratepv hdisk3 hdisk2
0516-404 allocp: This system cannot fulfill the allocation request.
        There are not enough free partitions or not enough physical volumes
        to keep strictness and satisfy allocation requests. The command
        should be retried with different allocation characteristics.
0516-132 lmigratelv: Incorrect entry in partition map file.
0516-134 lmigratelv: Received: 00f73e7044ccd502 110

0516-136 lmigratelv: Error reading input map.
0516-812 migratepv: Warning, migratepv did not completely succeed;
        all physical partitions have not been moved off the PV.

I had to run reorgvg to fix this issue.
It seems to be a bug in LVM because I can't see any reason of described behavior.

TSM: Formatting select command output to return in table format

2013-08-11T17:22:00.004+02:00

How to format output as table from select command in TSM?

You can find "how to" in IBM technote bellow:
http://www-01.ibm.com/support/docview.wss?uid=swg21502715

AIX: difference between df and du

2013-08-11T17:17:00.003+02:00

Why Numbers from "du -s" and "df" disagree / differ?

Answer can be found on these websites:

IBM Technote:
http://www-01.ibm.com/support/docview.wss?uid=isg3T1000401

Another blog:
http://lokams.blogspot.cz/2008/03/why-is-difference-between-du-and-df.html

Windows: How to list installed updates in command line using wmic commad

2013-06-12T10:30:00.001+02:00

This command can be used to list installed updates / fixes / hotfixes from command line in a windows based system:

wmic qfe list
and you can "grep" string from the output:
wmic qfe list | findstr "940349"

IBM LTFS Single Drive Edition (SDE) free download

2013-06-10T16:55:00.000+02:00

Single Drive Edition of LTFS (Linear Tape File System) is for free and available to download from the IBM Support website: http://www.ibm.com/support/fixcentral
Select:
Storage Systems > Tape Systems > Tape Device Drivers and Software > Linear Tape File System (LTFS)

Downloads are available for Linux, MAC OS and Windows
For supported tape systems and supported Operating Systems see the detailed specifications and overview:
http://www-03.ibm.com/systems/storage/tape/ltfs/specifications.html

IBM Tiered storage for big data: GPFS & LTFS

2013-05-20T15:45:00.000+02:00

Interesting article about BigData and integration of GPFS and LTFS
http://www.zurich.ibm.com/sto/systems/bigdata.html

TSM: IBM Tivoli Storage Manager V5.5 End of Support EOS 04/30/2014

2013-05-15T21:43:00.002+02:00

Software withdrawal and service discontinuance (EOS): IBM Tivoli and IBM Security selected products
IBM United States Withdrawal Announcement 913-063
April 9, 2013
5608-ISM IBM Tivoli Storage Manager V5.5 04/30/2014
5608-ISX IBM Tivoli Storage Manager Extended Edition V5.5 04/30/2014

Source:
http://www-01.ibm.com/common/ssi/cgi-bin/ssialias?subtype=ca&infotype=an&appname=iSource&supplier=897&letternum=ENUS913-063#h2-wprodx
http://www-01.ibm.com/support/docview.wss?uid=swg21635108&lnk=uctug_tivoli_nwsltr_TSM