...Running the controllers in active/active mode we're using RedHats Device Mapper Multipath software to create multiple paths to our SAN... I hope this helps you out a little...
It sure did! Since CentOS uses the 'yum' system some searching on the web and within the yum respositories led me to this:
Code:
[root@localhost etc]# yum install device-mapper-multipath
Loading "installonlyn" plugin
Setting up Install Process
Setting up repositories
Reading repository metadata in from local files
Parsing package install arguments
Resolving Dependencies
--> Populating transaction set with selected packages. Please wait.
---> Downloading header for device-mapper-multipath to pack into transaction set.
device-mapper-multipath-0 100% |=========================| 9.5 kB 00:00
---> Package device-mapper-multipath.i386 0:0.4.7-8.el5 set to be updated
--> Running transaction check
Dependencies Resolved
=============================================================================
Package Arch Version Repository Size
=============================================================================
Installing:
device-mapper-multipath i386 0.4.7-8.el5 base 760 k
Transaction Summary
=============================================================================
Install 1 Package(s)
Update 0 Package(s)
Remove 0 Package(s)
Total download size: 760 k
Is this ok [y/N]: y
Downloading Packages:
(1/1): device-mapper-mult 100% |=========================| 760 kB 00:01
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Installing: device-mapper-multipath ######################### [1/1]
Installed: device-mapper-multipath.i386 0:0.4.7-8.el5
Complete!
Now I just need to find a good HOWTO and give this a shot. Thanks a LOT!
I have a script that i need to run from different paths.
for example
mypc/path1/path2/,
mypc/path1/path2/path3/, and
mypc/path1/path2/path3/path4
How do i set up that script so that it can execute in any
of the above paths or how can i make it run on any path on my computer?? (5 Replies)
How do i find files in more than one directory? I searched through forums, but could not land into the right thread.
I tried something like
find dir1|dir2 -name file1
but it doesn't work. Please suggest. (5 Replies)
Hi all
Right, Im a little bit thick when it comes to SAN :-) IVe got a dual port qlc in a solaris 10 server. Its all connected and I can see a number of disks. The SAN guy here has asked me about preferred paths, i.e. as the dual ports are connected to two fabrics, etc device will have 4... (2 Replies)
Hey everyone.
I am working on designing a logging solution for a deployment we have going out in a few months. Right now we have a single storage head end, connected via fibre to a SAN. Basically the plan is to create a number of smaller LUNs on the SAN, and then use LVM2 to handle concatenating... (5 Replies)
Hello All,
We have a script which when run on the host gives us the status of the internal and SAN attached disks, its paths and other information. The output of which is as follows:
Nm DEVICE VEND PROD LunID SYM DevID DISKGROUP SIZE N E... (3 Replies)
I need to update about 2400 files in a directory subtree, with a new directory path inside the files
I need to change this occurence in all files: /d2/R12AB/VIS/apps/tech_st/10.1.2
with this: /u01/PROD/apps/apps_st/10.1.3
I know how to change single words using "find . -type f -print0 |... (6 Replies)
Hi ,
I am a newbie!!!
I want to develop a script for deleting files older than x days from multiple paths. Now I could reach upto this piece of code which deletes files older than x days from a particular path. How do I enhance it to have an input from a .txt file or a .dat file? For eg:... (12 Replies)
I am working on a script for Mac OS X that, among many other things, gets a list of all the installed Applications. I am pulling the list from the system_profiler command and formatting it using grep and awk. The problem is that I want to be able to use each result individually later in the script.... (3 Replies)
HACMP two-node cluster with mirrored LVM.
HACMP two-node cluster with two SAN storages mirrored using LVM. Configured 2 disk heartbeat networks - 1 per each SAN storage. While performing redundancy tests. Once one of SAN storage is down - cluster is going to ERROR state. What are the guidelines... (2 Replies)
if I have these wildcards to download from:
path1/*.txt
path2/*.txt
path3/*.txt
path4/*.txt
path5/*.txt
under a link such as this:
http://abc .com/]abc.com
Can wget be written in such a way to extract only those files and create the corresponding paths under a target folder? So the... (4 Replies)
Discussion started by: Devyn
4 Replies
LEARN ABOUT LINUX
kpartx
KPARTX(8) Linux Administrator's Manual KPARTX(8)NAME
kpartx - Create device maps from partition tables
SYNOPSIS
kpartx [-a | -d | -l] [-v] wholedisk
DESCRIPTION
This tool, derived from util-linux' partx, reads partition tables on specified device and create device maps over partitions segments
detected. It is called from hotplug upon device maps creation and deletion.
OPTIONS -a Add partition mappings
-r Readonly partition mappings
-r Read-only partition mappings
-d Delete partition mappings
-u Update partition mappings
-l List partition mappings that would be added -a
-p set device name-partition number delimiter
-f force creation of mappings; overrides 'no_partitions' feature
-g force GUID partition table (GPT)
-v Operate verbosely
-s Sync mode. Don't return until the partitions are created
EXAMPLE
To mount all the partitions in a raw disk image:
kpartx -av disk.img
This will output lines such as:
loop3p1 : 0 20964762 /dev/loop3 63
The loop3p1 is the name of a device file under /dev/mapper which you can use to access the partition, for example to fsck it:
fsck /dev/mapper/loop3p1
When you're done, you need to remove the devices:
kpartx -d disk.img
SEE ALSO multipath(8)multipathd(8)hotplug(8)AUTHORS
This man page was assembled By Patrick Caulfield for the Debian project. From documentation provided by the multipath author Christophe
Varoqui, <christophe.varoqui@opensvc.com> and others.
July 2006 KPARTX(8)