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

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.

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

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

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

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

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

[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

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

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

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

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.

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

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

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.

TSM: Why are backups going to tape instead of disk

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

DS8000: Code (Firmware) Recommendation

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