Configuring shared ethernet adapter on VIO server WPAR wpar command line wwnn wwpn zoneadd zonecreate Pages INDEX OF POSTS AVAILABLE IN THIS BLOG ANALYTICS Awesome Inc. Resolving the problem This document describes how to set up redundant VIOS support for IBM i partitions. Notify me of new posts via email. Script to remove disk from PowerHA Script to remove file system in cluster Script to shut down all the lpars script to view lv and vg info SEA CONFIGURATION SEA 802.1Q
rmdev -pdev vhost1 2. fc_err_recv=fast_fail and dyntrk=yes If link loss between storage and switch, ater 15 seconds delay, FC drives will query the device again. View my complete profile flipcart7 POSTS BY GROUPS Aix Advance Config Aix Advance Scripts Aix Advance Troubleshooting Aix Basics AIX CONCEPTS Aix FAQ Aix MIGRATION Aix nim Aix Performance Monitoring Aix Posted by Ke Email ThisBlogThis!Share to TwitterShare to FacebookShare to Pinterest Reactions: No comments: Post a Comment Newer Post Older Post Home Subscribe to: Post Comments (Atom) Blog Archive ► 2016 other
script example to configure samba script to add a user to a group Script to automate user password reset Script to change NIC parameter script to change properties of all file In single-path configurations, especially configurations with a single path to a paging device or tape drive, the delayed_fail default setting is recommended. chdev -dev hdisk3 -attr reserve_policy=no_reserve 3. Fast Failure of an I/O path is controlled by a fscsi device attribute called fc_err_recov.
True Prev Up Next Using I/O tracing Home Tuning VxVM Set the fast fail and dynamic tracking attributes on these devices: chdev –dev fscsiX –attr fc_err_recov=fast_fail –perm chdev –dev fscsiX –attr dyntrk=yes –perm 2. Map luns / hdisk to the clients. Please manually run 'savebase' before rebooting.
UNDERSTANDING AIX MEMORYMANAGEMENT COMPRESSING A FILE USED BY A PROCESS , TROUBLESHOOTING A FASTER GROWING LOG FILE INAIX Create a free website or blog at WordPress.com. %d bloggers like this: Aussie chdev -l fscsi0 -a dyntrk=yes -P chdev -l fscsi0 -a fc_err_recov=fast_fail -P Note we are also setting dynamic tracking to yes. This setting allows AIX to learn that the fibre channel This issue is not seen if the path is disabled from the host side. UNDERSTANDING fc_err_recov=fast_fail and dyntrk ALL DOCUMENT ARE PROPERTY OF SHIVAKANT , DO NOT COPY IBM , AIX , HACMP , ARE REGISTERED TRADE MARK OF IBM In a environment where we
Aix restore command How to restore inittab file in maintenance mode how to restrict aix user time How to run a script on all aix server from a single server How The command lspath will show the current paths. The readme for AIX 5.2 (which applies equally to higher versions) explains all of this behaviour here: http://www-1.ibm.com/support/docview.wss?uid=isg1520readmefb4520desr_lpp_bos Share this:TwitterFacebookGoogleLinkedInPrintEmailRedditPinterestTumblrLike this:Like Loading... I have just one day, today, and I'm going to be happy in it. -Groucho Marx UNDERSTANDING fc_err_recov=fast_fail anddyntrk Posted: January 24, 2012 in Aix Advance Config, configuring fc in mpio,
fc_err_recv=delayed_fail and dyntrk=no Default setting. AIX LPAR ,DLPAR AND VIO AIX GENERAL DOCUMENTS HACMP ADMINISTRATION AND CONFIGURATIONS AIX TROUBLESHOOTING UNIX / BACKUP /SAN ADMINISTRATION I JUST WANT THAT VIEWER OF THIS BLOG CAN PERFORM COMPLEX TASK Desirble for sing-path environement. 2. To verify the settings have been changed successfully, do the following: lsdev –dev fscsiX –attr fc_err_recov lsdev –dev fscsiX –attr dyntrk Important Note: The SCSI reserve policy for each LUN (or
While it’s true that in many cases the default settings may cover the most common implementations, there is no guarantee of safety in leaving everything at defaults. Aussie Storage Blog Blog at WordPress.com. Related About Anthony Vandewerdt I am an IT Professional who lives and works in Melbourne Australia. FC drivers won't recover if device change, I/Os takes longer to fail.
CREATING TWO NODE HACMP CLUSTER STEP BY STEP ,CREATING TWO NODE POWERHA CLUSTER STEP BY STEP PLANNING IP FOR A ALIASING (IP TAKE OVER BY ALIASING) To create two node hacmp To show the current reserve policy settings: l sdev –dev hdiskX –attr reserve_policy To set the no_reserve attribute, if necessary: chdev –dev hdiskX –attr reserve_policy=no_reserve -perm If the 'no_reserve' is not fc_err_recv=delayed_fail and dyntrk=yes If link loss between storage and switch, ater 15 seconds delay, FC drives will query the device again.
Belief is the ignition switch that gets you off the launching pad. -Denis Waitley Each morning when I open my eyes I say to myself: I, not events, have the power Tips to troubleshoot Total non-rootvg Failure tpconfig TROUBLEshooting disk in aix Troubleshooting disk performance related issue Troubleshooting Fiber channel adapter using script Troubleshooting multipath in RHEL Under Standing Linux Boot Process The dynamic tracking and fast fail features of AIX prevent the long failover time. How to restore a corrupted inittab file in aix How to restore AIX mksysb image from a DVD how to restore hmc How to restore inittab file from mksysb tape in
It does not represent the views of any corporation. no track while AIX system dump in progress. The change must be made prior to mapping the LUNs to IBM i, and it does not require a restart of VIOS. CREATING AND DELETING A LPAR FROM COMMAND LINE , STEP BY STEP CREATION AND REMOVAL OF LPAR USING COMMAND LINE ALL DOCUMENT ARE PROPERTY OF SHIVAKANT , DO NOT COPY IBM
With dyntrk disable, there is a big difference between "fast_fail" and "delayed_fail"; with dyntrk enable, there is less differnece. Recovery steps if you don't set the no_reserve prior to mapping the disk. SEA trunk additional VLAN SEA VLAN tagging configuration SECONDARY DATABASE OPERATION Security Hardening Server Virtualization SETTING NAME SERVER (DNS SETTING ) shell script for detailed vg information Shell script to automate This blog is totally my own work.
Mutual Failover Cascading resource gro... Fill in your details below or click an icon to log in: Email (required) (Address never made public) Name (required) Website You are commenting using your WordPress.com account. (LogOut/Change) You are When in this state the hdisk will show a size of 0 from VIOS. 1. The restart of VIOS is required for these changes to take effect. 3.
How to MAP LUN on V3700 how to migrate aix How to migrate aix from P6 to P7 How to migrate data from HP storage to IBM Storage How to migrate Bookmark the permalink. ← Thin Provisioning BuyersGuide Knowledge sharing inIT → One Response to Don't always default todefault Pingback: Don’t always default to default | Aussie Storage Blog | I Love EXTENDING A SHARED VG IN HACMP/ADDING A DISK IN SHARED VG IN HACMP , POWERHA EXTENDING VOLUME GROUP ALL DOCUMENT ARE PROPERTY OF SHIVAKANT , DO NOT COPY IBM , AIX Find me on Twitter Follow @aussiestorblog Subscribe to get email updates Enter your email address to subscribe to this blog and receive notifications of new posts by email.
Resources http://www-03.ibm.com/systems/resources/systems_i_Virtualization_Open_Storage.pdf http://www.redbooks.ibm.com/redbooks/pdfs/sg247590.pdf Historical Number 550038605 Document information More support for: Virtual I/O Server Software version: 6.1.0 Operating system(s): IBM i Reference #: N1012518 Modified date: 19 May 2013 Site availability Watson Product Search Search None of the above, continue with my search Redundant VIOS Support VIOS Technote (troubleshooting) Problem(Abstract) This document describes the requirements for setting up and configuring redundant VIOS For multiple paths, use "chdev -l fscsi0 -a fc_err_recov=fast_fail -P". (Note A: set to fast_fail my decrease the I/O fail time due to link loss between storage and switch and allow chdev -dev hdisk3 -attr reserve_policy=no_reserve Issuing lspv -size from both VIOS partitions should now show the correct size.
Use the lsattr command to verify that the dyntrk and fast_fail attributes are set to True on each adapter, as shown in this example: # lsattr -El fscsi0 attach switch How If no device, I/O flush back to adapter and I/O fail; if has device but scsi_id has changed, the FC driver won't recovery.(I/O failed with PERM errors) 3.