Sponsored Content
Operating Systems Linux Red Hat Need to mount LUN on two linux boxs (one rw the other ro) caveat details inside Post 302605963 by jcejka on Friday 9th of March 2012 07:57:32 AM
Old 03-09-2012
Question rephrase: Given the above, if i setup a new rhel6 server, set the LUN ACL as RO from the SAN Server. Can I map the existing lun (RO ACL from the SAN) into the server, if so how?

Using iscsi initiator on the rhel6 backup server, I can see the luns, vgscan shows the vg's for the lun's, lvscan same. But I cannot activate the VG or LV. In /dev/ their isnt a corrosponding directory for the vg (and sub symbolic link), their arent any entries for the volumes in /dev/mapper.

When I did the work around when i activated the vg, it created the folder in /dev/ and then when i activated the lvm, it created the symbolic link in the /dev/vg-lun and in /dev/mapper.

Im trying to following good practices, im worried that my hacked method may lead to data corruption on my production luns.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Perl log parcer. (for custom logs details inside)

OS:sol8 ok 2 things are very important. I will give examples of the logs and the client file for testing. Object: to display on the web sometime to parse your custom logs basied on the inputed date and client selected. I know alot of ppl are like who care. but i saw a perl script on here... (1 Reply)
Discussion started by: Optimus_P
1 Replies

2. Filesystems, Disks and Memory

Finding SAN Lun's on Linux.

Am trying to differentiate between the local disks and LUN's presented from SAN onto the server. Have Tried fdisk -l, however I quite cudn't differentiate the local disks from SAN presented LUN's. Can you pls. let me know the procedure and commands to find this. OS - RHEL 4 SAN - EMC... (3 Replies)
Discussion started by: Crazy_murli
3 Replies

3. Shell Programming and Scripting

Replace aword in a.The replaced word should not be overwitten in perl(details inside)

Hi i am trying to write a perl program where i have to open a 1)directory "unit" 2) rename the files in the dir say file1.txt;file2.txt...file5.txt to file1_a.txt;file2_a.txt,....file5_a.txt ;file1_x.txt ;file2_x.txt 3) open these renamed files and replace the words lets say file1_a.txt... (7 Replies)
Discussion started by: madhul2002
7 Replies

4. Red Hat

Can not change timestamp on directory inside cifs mount

Greetings, I have an rsync server that is unable to change the timestamp on any directories inside of cifs mounts. The same thing happens on all of my red hat machines. These machines are all patched, touch -t works on directories inside any other filesystem including NFS mounts. This is... (0 Replies)
Discussion started by: Create
0 Replies

5. AIX

Mount a SAN LUN which contains clone copy - AIX 6.1

Hello Everyone, Can someone help me to mount a SAN hdisk which contains a clone data copy(san) of the remote server to the another machine. Both servers are running in AIX. Thanks in advance ! Regards, Gowtham.G (3 Replies)
Discussion started by: gowthamakanthan
3 Replies

6. Solaris

import lun data to mount point - Solaris 10

Hi Guys, I have EMC Storage and from this storage I have maped lun5 to Sun Solaris server and I have created on this lun mount point with name /application I have anothere Sun Solaris server and I'll colne lun5 to lun10 from storage level so the data of lun5 will be in lun10 how to... (6 Replies)
Discussion started by: Mr.AIX
6 Replies

7. Red Hat

adding LUN to linux server

Hi All, I am new for this blog and this is my first Query on this blog. I would like to dael with graet masters on linux. Here we go, After storage people created the LUN, How to add that LUN to Linux server. (Make that LUN visibility on linux server.) ? How to view the LUN... (5 Replies)
Discussion started by: abhay1983
5 Replies

8. Solaris

How to mount a shared LUN between two hosts?

i had bunch of luns from storedge 3310 mounted on a T2000 and being used. Then i added a second T2000 to the storage array but now i cant mount them on either nodes , i do see them in format though. these luns have data on them and they were mounted on one so how do i mount them read/write on... (5 Replies)
Discussion started by: aliyesami
5 Replies

9. Shell Programming and Scripting

How to list all autosys job boxs in command line?

Hi Gurus, I am newbie for autosys scheduler. I am wondering is there a command to list all job boxes or list all autosys jobs? Thanks in advance. (0 Replies)
Discussion started by: ken6503
0 Replies

10. Linux

Mount a newly added LUN on a GNU/Linux distro

Hi I am not familiar with the linux, but I was asked to create a file system on a LUN from the NetApp that was mapped to the linux server. The server is runing: uname -a Linux localhost.localdomain 2.6.18-92.el5 #1 SMP Tue Apr 29 13:16:15 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux and now... (6 Replies)
Discussion started by: fretagi
6 Replies
ql-dynamic-tgt-disc(8)					       System Administration					    ql-dynamic-tgt-disc(8)

NAME
ql-dynamic-tgt-lun-disc - Scans for newly added LUNs. SYNOPSIS
ql-dynamic-tgt-lun-disc [OPTIONS] DESCRIPTION
Dynamic TGT-LUN Discovery Utility This utility scans for newly added LUNs. After adding new LUNs, you do not need to unload, then load the QLogic FC driver or reboot the system To begin scanning the LUNs issue following command: # /usr/sbin/ql-dynamic-tgt-lun-disc -al, --allow-lip LIP is not issued by default, even if it is required for scanning new LUNs Setting this option, allows the utility to issue LIP. -cl, --current-luns Displays LUNS currently present -e, --extended-scan Use this option as "-e | --extended-scan". to rescan LUNs. This will identify any change in attributes of existing LUNs. This option can be used in combination of scan/refresh or max luns -h, --help, ? Prints this help message -i, --interactive Use this option to use the menu driven program -is, --iscsi Use this option to operate on ISCSI HBAs, this option can be used in combination of any other supported option. -m, --max-lun To set the maximum LUNs to be scanned -p, --proc Use PROC file system for LUN scanning -r, --refresh To refresh, that is remove LUNs that are lost use the options "-r|--refresh". This will remove the LUNs which no more exist. -s, --scan [ -r|--refresh ] The QLogic LUN scan utility re-scans all the devices connected to the QLogic HBA SEE ALSO
ql-lun-state-online(8), ql-hba-snapshot(8), ql-set-cmd-timeout(8) Matthias Schmitz <;matthias@sigxcpu.org> July 2009 ql-dynamic-tgt-disc(8)
All times are GMT -4. The time now is 05:29 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy