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Full Discussion: Vg not able access.
Operating Systems AIX Vg not able access. Post 303001770 by bakunin on Thursday 10th of August 2017 11:25:01 PM
Old 08-11-2017
Quote:
Originally Posted by leecopper
Hi Guys,
After a reboot done on the server, I am able to access the VG again, in fact while I am trying to shutdown the server it self, it hang and take long time till I need to force shutdown from HMC.
Thanks a lot guys.
First off, i am glad you could resolve your issue. But: a reboot is (most times) not the way to resolve things. After all, we are not on Windows - we use a real OS with real error-correcting capabilities.

Most probably your issue came from a "VG lock". The SCSI-protocol (which is also used with FC-connected disks as "iSCSI") can lock a disks so that any other attempt to use it will fail. You need such locks for disks which are accessed from more than one system, like in clusters. Sometimes such a lock is placed wrongly and not removed so that it prevents further management of the disk. You need to break such a lock before continuing.
You do that by

Code:
varyonvg -bu <VG>

I hope this heps.

bakunin
This User Gave Thanks to bakunin For This Post:
 

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reboot(8)						      System Manager's Manual							 reboot(8)

Name
       reboot - automatic reboot procedures

Syntax
       /etc/reboot [ -n ] [ -q ]

Description
       The  ULTRIX  system is booted by loading a kernel image, usually into memory at location zero and transferring to zero.	Because the system
       is not reenterable, the kernel image must be read in from disk each time the system is bootstrapped.

       When the reboot of a running system is desired, is normally used.  If there are no users, can be used.  The command causes the disks to	be
       synced,	and  then  a multiuser reboot is initiated.  The system is booted and an automatic disk check is performed.  If the procedure suc-
       ceeds, the system is then brought up for the users.

       The system will reboot itself after a power failure or after a crash, provided auto-restart is enabled on your system.  A consistency check
       of the file systems will be performed and, unless the check fails, the system will resume multiuser operations.

Options
       -n   Prevents the disks from being synced.

       -q   Reboots quickly and ungracefully, without shutting down running processes first.

Files
       System code

See Also
       crash(8v), fsck(8), halt(8), init(8), newfs(8), rc(8), shutdown(8)

																	 reboot(8)
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