HW/OS2012. 1. 9. 09:12

how to failover an etherchannel to the primary interface in AIX

Description

In AIX, suppose you have an etherchannel (ent2 in this example) which is using ent0 as the primary interface and ent1 as the backup interface and there is a failure on ent0:

# entstat -d ent2 | grep Active
Active channel: backup adapter

Once ent0 comes back up, you will manually need to initiate a failover to make ent0 the primary interface again.

# /usr/lib/methods/ethchan_config -f ent2

Verify:

# entstat -d ent2 | grep Active
Active channel: primary channel

 
Posted by [TheWon]
HW/OS2011. 11. 26. 17:01

HP Proliant G6 장점

ProLiantG6장점_요약.pdf
Posted by [TheWon]
HW/OS2011. 11. 24. 09:02

How to restore single file or single directory from mksysb tape backup


1) To restore individual file or dirs. From a mksysb tape, find the blocksize of the 4th image on tape . To obtain this info. Run the following cmd after mounting mksysb tape:

cd /tmp
tctl -f /dev/rmt0 rewind 
chdev -l rmt0 -a block_size=512
restore -s2 -xqdvf /dev/rmt0.1 ./tapeblksz
cat ./tapebklsz
The output that is given will be the blocksize the tape drive was set to when the mksysb was made

2) Next , the blocksize needs to be set accordingly by running the following cmd: chdev -l /dev/rmt0 -a block_size=[ number in the ./tapeblksz file] 

3) The files or dirs. need to be restored by running the following cmd : cd / (if the file needs to be restored to its original place) 

4) tctl -f /dev/rmt0 rewind

5) restore -s4 xqdvf /dev/rmt0.1 ./dir/filename(for one file)

6) OR restore -s4 -xqdvf /dev/rmt0.1 ./dir (for all files in dir) 
Eg to restore /etc to a temp area 
cd /backup/tmp 
tctl -f /dev/rmt0 rewind 
restore -s4 -xqdvf /dev/rmt0.1 ./etc 
you can restore eg. /var or /usr or /public/prod in the above way

Sometimes, you just need that one single file from a mksysb image backup. It's really not that difficult to accomplish this. 
To see which files are in the mksysb backup 






$ restore -Tvqf alpha.mksysb
New volume on alpha.mksysb:
Cluster 51200 bytes (100 blocks).
Volume number 1
Date of backup: Thu Sep 29 22:52:26 2011
Files backed up by name
User root
6045 ./bosinst.data
11 ./tmp/vgdata/rootvg/image.info
11077 ./image.data
189116 ./tmp/vgdata/rootvg/backup.data
0 ./usr/sys/inst.images
0 ./usr/sys/inst.images/installp

To restore the single file:

$ restore -xvqf alpha.mksysb ./etc/passwd
New volume on alpha.mksysb:
Cluster 51200 bytes (100 blocks).
Volume number 1
Date of backup: Thu Sep 29 22:52:26 2011
Files backed up by name
User root
x 612 ./etc/passwd
total size: 612
files restored: 1

Please do not forget . (point) before file name to restore.


$ ls -l ./etc/passwd
-rw-r--r-- 1 root security 612 Aug 28 23:04 ./etc/passwd


First of all, go to the directory that contains the mksysb image file:

# cd /sysadm/iosbackup
In this example, were using the mksysb image of a Virtual I/O server, created using iosbackup. This is basically the same as a mksysb image from a regular AIX system. The image file for this mksysb backup is called vio1.mksysb 

First, try to locate the file you're looking for; For example, if you're looking for file nimbck.ksh:
# restore -T -q -l -f vio1.mksysb | grep nimbck.ksh
New volume on vio1.mksysb:
Cluster size is 51200 bytes (100 blocks).
The volume number is 1.
The backup date is: Thu Jun  9 23:00:28 MST 2011
Files are backed up by name.
The user is padmin.
-rwxr-xr-x- 10   staff  May 23  08:37  1801 ./home/padmin/nimbck.ksh
Here you can see the original file was located in /home/padmin. 

Now recover that one single file:
# restore -x -q -f vio1.mksysb ./home/padmin/nimbck.ksh
x ./home/padmin/nimbck.ksh
Note that it is important to add the dot before the filename that needs to be recovered. Otherwise it won't work. Your file is now restore to ./home/padmin/nimbck.ksh, which is a relative folder from the current directory you're in right now:
# cd ./home/padmin
# ls -als nimbck.ksh
4 -rwxr-xr-x    1 10  staff  1801 May 23 08:37 nimbck.ksh

Posted by [TheWon]
HW/OS2011. 11. 10. 10:29

System p POWER6 hardware courses

https://www-304.ibm.com/servers/resourcelink/lib03030.nsf/pages/systemPHardwareCoursesbyCode?OpenDocument&pathID
Posted by [TheWon]
HW/OS2011. 11. 8. 17:51

Windows Quickly Find Local Open Ports

http://www.petri.co.il/quickly_find_local_open_ports.htm
Posted by [TheWon]

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