Sponsored Content
Full Discussion: expanding the size of vg
Operating Systems AIX expanding the size of vg Post 302247683 by bakunin on Thursday 16th of October 2008 08:04:50 AM
Old 10-16-2008
Quote:
Originally Posted by manoj.solaris
I have created the lun of 15gb and assigned to aix,but now I want to expand the size of lun 15gb to 30gb,
You can do so with certain SAN subsystems, but not all. IIRC DS8xxx models can do that but (older?) DS4xxx models can't.


Quote:
1)wheather i have to umount that partition on aix side before increasing the size of lun on storage side or directly I can increase directly size of lun storage side
No LUN is "mounted", because a LUN is neither a FS nor does it resemble one. A LUN is analogous to a (physical) disk. Physical disks (PVs) are merged into volume groups (VGs) on which logical volumes (LVs) are created on which in turn filesystems (FSs) could be created. Only these filesystems are mounted, not the other logical entities.

(Sorry for maybe being overly exact, i have seen people not being able to grasp the differences mentioned above and for that reason not being able to use LVM correctly.)

If you mean to "varyoff" the VG during the change: no, this is not necessary. Either the SAN subsystem can do dynamic changes of LUNs, then you can do it during uptimes or the SAN subsystem can't do that, then you will have to create a new (bigger) LUN, add it to the VG (extendvg) , move the LVs to the new LUN (migratepv), get the old LUN out of the VG (reducevg) and delete it. It might be sensible to do that during downtime because of performance degradation (depends on your system and what it does), but it is not necessary.

Quote:
2)wheather i have use any other command along with extendvg
See above, that depends on what your subsystem supports and how a possible degradation of disk performance may interfere with the goals of your installation. Only you can take this decision, because you know your system best.

I hope this helps.

bakunin
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

tar expanding trouble

Hello, I have just download a .tar.gz when I run: $tar x *.tar.gz or even $tar z *.tar.gz this is the error I get tar: can't open /dev/sa0 : Device not configured How do I reconfigure the device so that it expands the file in it's current location? Thanks so much for your help! (4 Replies)
Discussion started by: TAT2ME74
4 Replies

2. Shell Programming and Scripting

expanding standard terminal size

what is the Ksh syntax to expand/change the geometry of the running terminal window? thanks (6 Replies)
Discussion started by: prkfriryce
6 Replies

3. Shell Programming and Scripting

Expanding shell variable

I have a question about expanding shell variables. Given the following piece of script: a="Some text" b="Other text" for i in a b do string1=$i echo $string1 --> returns 'a' string2=EXPRESSION_WITH_$i echo $string2 --> returns 'Some text' done ... (2 Replies)
Discussion started by: lonar
2 Replies

4. Shell Programming and Scripting

expanding alias from a variable

Hi ! I am making my first steps to make a script. Therefore i try to make a scp command more easier. Given is the following alias: 14='admin@x-abcd-def.xyz Now i want to let the script read three var's from the console to use them in the script and then build the scp string. echo... (7 Replies)
Discussion started by: locutus01
7 Replies

5. Linux

Expanding slice

Hi all I am testing backupPC as a backup solution for machines, as far as i knew, backuppc cannot combine more than storage from different slices so it have to be in one slice my question is, what is the easy way to offer a virtual logical drive expanded/expandable to backuppc, i mean i want to... (1 Reply)
Discussion started by: XP_2600
1 Replies

6. Shell Programming and Scripting

Expanding regex in quote

Hi Experts, I'm trying to match and perform the substitution (below) but failed. <File1> Attributes = "SampleAttributes" Attributes1 = "SampleAttributes1" Command: grep Attributes File1 | sed 's|Attributes\s=\s\"\"|Attributes = \"ReplaceAttributes\"|' Any ideas? :( (2 Replies)
Discussion started by: antderu
2 Replies

7. Solaris

expanding RAM

our sparc server has only 1Gb RAM. Since RAM is not very expensive anymore, it seems like a good idea to upgrade it. will it make server (and database on it) faster? I hope it would less 'abuse' hard drive.. (6 Replies)
Discussion started by: orange47
6 Replies

8. Shell Programming and Scripting

Expanding a globed variable name

Heyas I'm trying to give some information on used variables. While the first two work fine, the ones starting with a glob (is that the proper term?) fail. echo ${!TUI_*} ${!RET_*} ${!*_CLI} ${!*\_GUI} bash: ${!*_CLI}: bad substitution Same with @ or have them escaped. I found no... (2 Replies)
Discussion started by: sea
2 Replies

9. Shell Programming and Scripting

Longlist files without expanding

Hi, I want to long list files within a file.tar.Z/file.tar.gz file. I tried these: I'm working on HP UX 11iV3 OS tar -tvzf file.tar.gz -->not working as 'z' is not supported gunzip -c file.tar.gz | tar tvf - -->does this unizip the tar file? i don't want it to be unzipped. ... (1 Reply)
Discussion started by: sam_bd
1 Replies

10. UNIX for Beginners Questions & Answers

Sed variable not expanding

I have also some difficulty calling sed to change a word in a file. sed -i 's/docTitl/Outline ${docTitl}/g' $ofln Moved to new thread, since it is a different question (3 Replies)
Discussion started by: Danette
3 Replies
sbdadm(1M)						  System Administration Commands						sbdadm(1M)

NAME
sbdadm - SCSI Block Disk command line interface SYNOPSIS
sbdadm create-lu [-s, --size size] filename sbdadm delete-lu lu_name sbdadm import-lu lu_name sbdadm list-lu lu_name sbdadm modify-lu [-s, --size size] lu_name | filename DESCRIPTION
The sbdadm command creates and manages SCSI-block-device-based logical units that are registered with the SCSI Target Mode Framework (STMF). SUB-COMMANDS The sbdadm command supports the subcommands listed below. Note that if you enter a question mark as an argument to the command (sbdadm ?), sbdadm responds with a help display. create-lu [-s, --size size] filename Create a logical unit that can be registered with the STMF. For the -s option, size is an integer followed by one of the following let- ters, to indicate a unit of size: k kilobyte m megabyte g gigabyte t terabyte p petabyte e exabyte If you do not specify size, the size defaults to the size of filename. The size specified can exceed the size of the file or device. delete-lu lu_name Deletes an existing logical unit that was created using sbdadm create-lu. This effectively unloads the logical unit from the STMF framework. Any existing data on the logical unit remains intact. import-lu lu_name Imports and loads a logical unit into the STMF that was previously created using sbdadm create-lu and was since deleted from the STMF using sbdadm delete-lu. On success, the logical unit is again made available to the STMF. filename is the filename used in the sbdadm create-lu command for this logical unit. list-lu List all logical units that were created using the sbdadm create-lu command. modify-lu [-s, --size size] lu_name | filename Modifies attributes of an logical unit created using the sbdadm create-lu command. For the -s option, size is an integer value followed by a unit specifier. The unit specifiers are as described above under create-lu. When this option is specified, the existing size of the logical unit is changed to the new size. The size specified can exceed the size of the file or device represented by lu_name. OPERANDS
sbdadm use the following operands: filename Name of an existing file or a fully qualified path to a raw block device. lu_name The 32-byte hexadecimal representation of the logical unit. EXAMPLES
Example 1 Creating a Logical Unit The following series of commands creates a 10-gigabyte logical unit. # touch /export/lun/0 # sbdadm create-lu -s 10g /export/lun/0 # sbdadm create-lu /dev/rdsk/c1t1d0s0 Example 2 Listing Logical Units The following command lists all logical units. # sbdadm list-lu Found 2 LU(s) GUID DATA SIZE SOURCE -------------------------------- ----------- ------ 6000ae4000144f21d92c47b0dd650002 10737352704 /export/lun/0 6000ae4000144f21d92c47b0de300032 134283264 /dev/rdsk/c1t1d0s0 EXIT STATUS
0 Successful completion. non-zero An error occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWstmfu | +-----------------------------+-----------------------------+ |Interface Stability |Committed | +-----------------------------+-----------------------------+ SEE ALSO
stmfadm(1M), attributes(5) SunOS 5.11 12 Jun 2008 sbdadm(1M)
All times are GMT -4. The time now is 10:42 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy