Sponsored Content
Operating Systems AIX LPAR freezes after switching of storage (lpar is mirrored) Post 302503470 by markiemark on Thursday 10th of March 2011 04:10:30 PM
Old 03-10-2011
LPAR freezes after switching of storage (lpar is mirrored)

Hi all,

I have the following configuration

2 ds3524 storage disk systems located over 2 locations
2 P720 server located over 2 locations

DS3524 are connected to san switch.
Each vio server has 1 fc adapter attached to a san switch.

per p720 server 2 virtual io servers. Vio 1 has 1 lun from 1 ds3524, Vio 2 has 1 lun from the other ds3524
On the lpar we use LVM mirroring.

The problem:

When we halt 1 DS3524 the lpar freezes for about 30 seconds and then is again available.
Is this normal behaviour? When i shutdown 1 vio server , everything on the lpar is ok , no freeze.

Any ideas ?

thx MarkieMark
 

10 More Discussions You Might Find Interesting

1. AIX

LPAR and CFGMGR

I have a P570 that for some reason is not allowing the P1-T6 NIC to be recognized. I have confirmed from the HMC that it is set for the LPAR, but when I do a cfgmgr, it won't recognize it. It though is recognizing the slot cards just fine which are P1-C3 for one shelf and P1-C3 of another shelf.... (1 Reply)
Discussion started by: LegendMan
1 Replies

2. AIX

Autostart of LPAR

Hi, I have 2 lpars on my AIX that needs to be started manually after each reboot. Because the servers are storing the NFS and NIS info, other servers won't run correctly until they start up. I found in IBM documentation the steps to make it automatic. My question is, I want to know if... (2 Replies)
Discussion started by: rahzzbietel
2 Replies

3. AIX

VIO SAN STORAGE LPAR ( Dynamically increasing size )

Hi, Is there a way to dynamically increase the size of virtual disk on the LPAR. The virtual disk is coming from my VIO Server. From my SAN I have allocated a disk to VIO Server and from VIO Server to my LPAR....If I increase the space of the logical SAN DISK (DS 4700 using IBM TotalStorage... (0 Replies)
Discussion started by: filosophizer
0 Replies

4. AIX

LPAR

I am planning for System P with 2 number of 2-core processor (4 core in total). Can I make 3 LPARS with this processor configuration without the support of micropartitioning, that means with simple LPAR only. (3 Replies)
Discussion started by: pchangba
3 Replies

5. AIX

ldom and lpar

hi, Plz let me know if the concept of sun ldom and aix lpar is same or not. thnx, snj (1 Reply)
Discussion started by: snjksh
1 Replies

6. AIX

LPAR creation

can i get a step b syep explanation in creating LPAR... i have searched for tutorials i couldn't find the right one.... (2 Replies)
Discussion started by: udtyuvaraj
2 Replies

7. AIX

Bootting up a new LPAR

I have created a new LPAR using IVM. I activated the LPAR, and start the window terminal (java), it prompt me for the padmin password. After keyin the password, it will shows BOOTP parameter. I am just wondering how come it didnt go to screen where i can select to go into SMS menu to pick... (0 Replies)
Discussion started by: wingcross
0 Replies

8. AIX

Mirroring in LPAR

Hi Folks, I am a newbie in AIX. Can someone please tell me how to do root mirroring in AIX LPAR which is created from mksysb image via HMC/NIM. ? AIX 5.3/6.1 Let me know. Thanks in advance (2 Replies)
Discussion started by: snchaudhari2
2 Replies

9. AIX

Hostname for each lpar

Hi Gurus, Can a AIX server with 4 LPARs, each having it's own hostname on the same physical host. Is this possible? Thanks, S (2 Replies)
Discussion started by: svajhala
2 Replies

10. AIX

How to differentiate between a standalone LPAR and a VIOC (which again is a lpar)?

There can be configurations in IBM Server wherein a standalone partition is created on some supported IBM Server Or A VIOS - VIOC LPARs created. Now in both cases they are lpars. But if I want to differentiate b/w a standalone LPAR vs an VIOC LPAR how can I do..? On a... (2 Replies)
Discussion started by: Manish00712
2 Replies
TGT-ADMIN(8)															      TGT-ADMIN(8)

NAME
tgt-admin - Linux SCSI Target Configuration Tool SYNOPSIS
tgt-admin [-e --execute] [--delete <value>] [--offline <value>] [--ready <value>] [-s --show] [-C --control-port <NNNN>] [-c --conf <file>] [--ignore-errors] [-f --force] [-p --pretend] [--dump] [-v --verbose] [-h --help] DESCRIPTION
tgt-admin is a utility which allows a persistent configuration of targets and luns. It uses tgtadm commands to create, delete and show targets. OPTIONS
-e, --execute Read /etc/tgt/targets.conf and execute tgtadm commands. If the target already exists, it won't be processed. See --update. -d, --delete <value> Delete all or selected targets. The target will be deleted only if it's not used (no initiator is connected to it). If you want to delete targets which are in use, you have to add the "--force" flag. Example usage: --delete ALL - delete all targets --delete tid=4 - delete target 4 (target with tid 4) --delete iqn.2008-08.com.example:some.target - delete this target --offline Put all or selected targets in offline state. Example usage: --offline ALL - offline all targets --offline tid=4 - offline target 4 (target with tid 4) --offline iqn.2008-08.com.example:some.target - offline this target --ready Put all or selected targets in ready state. Example usage: --ready ALL - ready all targets --ready tid=4 - ready target 4 (target with tid 4) --ready iqn.2008-08.com.example:some.target - ready this target --update <value> Update all or selected targets. The target will be updated only if it's not used (no initiator is connected to it). If you want to update targets which are in use, you have to add "--force" flag. Example usage: --update ALL - ready all targets --update tid=4 - ready target 4 (target with tid 4) --update iqn.2008-08.com.example:some.target - update this target -s, --show Show all the targets. -C, --control-port <NNNN> It is possible to run multiple concurrent instances of tgtd on a host. This argument is used to control which instance the tgt-admin command will operate on. -c, --conf <configuration file> Specify an alternative configuration file instead of /etc/tgt/target.conf, which is the default. --ignore-errors Continue even if tgtadm exits with non-zero code. -f, --force Force some operations even if the target is in use. -p, --pretend Only print tgtadm options which would be used; don't execute any actions. Assumes -v. --dump Dump current tgtd configuration. Note: does not include detailed parameters, like write caching. -v, --verbose Increase verbosity (show tgtadm commands used). -h, --help Display a list of available options and exit. CONFIGURATION FILE SYNTAX
The defualt configuration file is /etc/tgt/target.conf. It defines all the targets and their properties. The configuration file is in XML format and uses tags. Configuration file contains several target blocks, where each block contains target's properties such as storage devices, initator ACL and authorization information. You can include other config files using: include /etc/tgt/xen/*.conf. backing-store Defines a virtual device on the target. direct-store Defines a direct mapped device with the same properties as the physical device (such as VENDOR_ID, SERIAL_NUM, etc.) initiator-address Allows connections only from the specified IP address. Defaults to ALL if no "initiator-address" is specified. incominguser Define iscsi incoming authentication setting. If no "incominguser" is specified, it is not used. outgoinguser Define iscsi outgoing authentication setting. If no "outgoinguser" is specified, it is not used. Example configuration file: <target iqn.2007-04.com.example:san.monitoring> backing-store /dev/san/monitoring # if no "incominguser" is specified, it is not used incominguser backup secretpass12 # defaults to ALL if no "initiator-address" is specified initiator-address 192.168.1.2 </target> <target iqn.2007-02.com.example:san.xen1> backing-store /dev/san/xen1-disk1 # LUN1 direct-store /dev/san/xen1-disk2 # LUN2 initiator-address 192.168.1.2 # Allowed IP initiator-address 192.168.5.6 # Allowed IP incominguser user1 secretpass12 incominguser user2 secretpass23 outgoinguser userA secretpassA </target> <target iqn.2007-02.com.example:san.xen2> backing-store /dev/san/xen2 </target> <target iqn.2007-06.com.example:san.vmware1> backing-store /dev/san/vmware1 </target> FILES
/etc/tgt/targets.conf Configuration file for tgt-admin. /usr/share/doc/tgt/targets.conf.example Example configuration file for tgt-admin. SEE ALSO
tgtd(8), tgtadm(8), tgtimg(8), tgt-setup-lun(8). http://stgt.sourceforge.net/ REPORTING BUGS
Report bugs to <stgt@vger.kernel.org> 07/29/2010 TGT-ADMIN(8)
All times are GMT -4. The time now is 08:45 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy