Monthly Archives: October 2009

A disk is now available but GPFS doesn’t believe you

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home/root> mmchdisk oragpfs2 start -d gpfs2nsd
GPFS: 6027-589 Scanning file system metadata, phase 1 …
GPFS: 6027-552 Scan completed successfully.
GPFS: 6027-589 Scanning file system metadata, phase 2 …
GPFS: 6027-552 Scan completed successfully.
GPFS: 6027-589 Scanning file system metadata, phase 3 …
GPFS: 6027-552 Scan completed successfully.
GPFS: 6027-589 Scanning file system metadata, phase 4 …
GPFS: 6027-552 Scan completed successfully.
GPFS: 6027-565 Scanning user file metadata …
GPFS: 6027-552 Scan completed successfully.
[033]0;u@h: w007]/home/root> mmlsdisk oragpfs2
disk driver sector failure holds holds storage
name type size group metadata data status availability pool
———— ——– —— ——- ——– —– ————- ———— ————
gpfs2nsd nsd 512 -1 yes yes ready up system
gpfs28nsd nsd 512 147 yes yes ready up system

How smit creates a vlan

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#!/bin/ksh

###################
# Pass the vlan tag id as $1
#
#
###################

# create the entX device
DEV=`mkdev -c adapter -s vlan -t`

# create the enX device
DE=`echo $DEV | cut -f1 -d" " | cut -c1,2,4-`
/usr/lib/methods/defif -c if -t en -s EN -w $DE

# create the etX device, not usually used
DT=`echo $DEV | cut -f1 -d" " | cut -c1,3-`
/usr/lib/methods/defif -c if -t en -s EN -w $DT

# retrieve the entX name
echo $DEV | while read ENT TRASH

# set the vlan tag
chdev -l $ENT -a vlan_tag_id=$1

Oracle 10g ‘no’ settings on AIX 5.3

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When starting an instance on AIX platform we may recieve the following errors in the alert log file:

ORA-00603: ORACLE server session terminated by fatal error
ORA-27504: IPC error creating OSD context
ORA-27300: OS system dependent operation:sendmsg failed with status:59
ORA-27301: OS failure message: Message too long
ORA-27302: failure occurred at: sskgxpsnd1

Fix:

Using the following commands change the values of the following parameters(in AIX):

no -o tcp_sendspace=262144
no -o tcp_recvspace=262144
no -o udp_sendspace=65536
no -o udp_recvspace=262144
no -o rfc1323=1

Adding these entries to /etc/rc.net will ensure that the parameter take effect on every reboot.