Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Logical volume to raw device
Operating Systems AIX Logical volume to raw device Post 302193295 by veccinho on Friday 9th of May 2008 02:30:34 AM
Old 05-09-2008
Quote:
Originally Posted by zxmaus
every logical volume that contains no filesystem is per definition a raw device ...
change the permission of the device to the database ownership (like on the already existent RAW devices) and initialise them from within the database ... thats it

Rgds
zx

Ok, great!
One more question.
When i create logical volume, it is by default created as block device.
But i see that all my raw devices assigned to the database are character-special devices.
Example, in my /dev directory i have following:
brw-rw---- 1 root system 10, 12 Dec 09 2005 lvinformix0

crw-rw---- 1 informix informix 10, 12 Mar 16 06:30 rlvinformix0

From a given example, only the rlvinformix0 device is assigned to the database.
So, how do i make this new LV to be a character device?
 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

LVM - Extending Logical Volume within Volume Group

Hello, I have logical volume group of 50GB, in which I have 2 logical volumes, LogVol01 and LogVol02, both are of 10GB. If I extend LogVol01 further by 10GB, then it keeps the extended copy after logical volume 2. I want to know where it keeps this information Regards Himanshu (3 Replies)
Discussion started by: ghimanshu
3 Replies

2. AIX

Moving a Logical Volume from one Volume Group to Another

Does anyone have any simple methods for moving a current logical volume from one volume group to another? I do not wish to move the data from one physical volume to another. Basically, I want to "relink" the logical volume to exist in a different volume group. Any ideas? (2 Replies)
Discussion started by: krisw
2 Replies

3. AIX

Basic Filesystem / Physical Volume / Logical Volume Check

Hi! Can anyone help me on how I can do a basic check on the Unix filesystems / physical volumes and logical volumes? What items should I check, like where do I look at in smit? Or are there commands that I should execute? I need to do this as I was informed by IBM that there seems to be... (1 Reply)
Discussion started by: chipahoys
1 Replies

4. UNIX and Linux Applications

raw logical volumes to jfs2

Does anybody if it is possible to convert raw logical volumes to jfs2? If so how is it done or where can I find the information to make the conversion. We have an Oracle Db on AIX and it is using raw lv's which we want to convert to jfs2 because the raw devices don't restore correctly from our... (4 Replies)
Discussion started by: daveisme
4 Replies

5. AIX

Logical volume name conflict in two volume group

Hello, I am a french computer technician, and i speak English just a little. On Aix 5.3, I encounter a name conflict logical volume on two volume group. The first volume lvnode01 is OK in rootvg and mounted. It is also consistent in the ODM root # lsvg -l rootvg |grep lvnode01 ... (10 Replies)
Discussion started by: dantares
10 Replies

6. UNIX for Dummies Questions & Answers

Confusion Regarding Physical Volume,Volume Group,Logical Volume,Physical partition

Hi, I am new to unix. I am working on Red Hat Linux and side by side on AIX also. After reading the concepts of Storage, I am now really confused regarding the terminologies 1)Physical Volume 2)Volume Group 3)Logical Volume 4)Physical Partition Please help me to understand these concepts. (6 Replies)
Discussion started by: kashifsd17
6 Replies

7. AIX

Position of the logical volume on the physical volume

Hello everyone, I just read that while creating a logical volume(LV) we can choose the region of the physical volume (PV) in which the LV should be created. When I say region I mean: outer edge - outer middle - center - inner middle and inner edge. Can anyone help me understand the utility... (11 Replies)
Discussion started by: adilyos
11 Replies

8. UNIX for Dummies Questions & Answers

How to create a volume group, logical volume group and file system?

hi, I want to create a volume group of 200 GB and then create different file systems on that. please help me out. Its becomes confusing when the PP calculating PP. I don't understand this concept. (2 Replies)
Discussion started by: kamaldev
2 Replies

9. Red Hat

No space in volume group. How to create a file system using existing logical volume

Hello Guys, I want to create a file system dedicated for an application installation. But there is no space in volume group to create a new logical volume. There is enough space in other logical volume which is being mounted on /var. I know we can use that logical volume and create a virtual... (2 Replies)
Discussion started by: vamshigvk475
2 Replies

10. UNIX for Advanced & Expert Users

Command to see the logical volume path, device mapper path and its corresponding dm device path

Currently I am using this laborious command lvdisplay | awk '/LV Path/ {p=$3} /LV Name/ {n=$3} /VG Name/ {v=$3} /Block device/ {d=$3; sub(".*:", "/dev/dm-", d); printf "%s\t%s\t%s\n", p, "/dev/mapper/"v"-"n, d}' Would like to know if there is any shorter method to get this mapping of... (2 Replies)
Discussion started by: royalibrahim
2 Replies

LEARN ABOUT NETBSD

lvdisplay

LVDISPLAY(8)						      System Manager's Manual						      LVDISPLAY(8)

NAME

       lvdisplay - display attributes of a logical volume

SYNOPSIS

       lvdisplay [-c|--colon] [-d|--debug] [-h|-?|--help] [--ignorelockingfailure] [--maps] [-P|--partial] [-v|--verbose] LogicalVolumePath [Logi-
       calVolumePath...]

DESCRIPTION

       lvdisplay allows you to see the attributes of a logical volume like size, read/write status, snapshot information etc.

       lvs (8) is an alternative that provides the same information in the style of ps (1).  lvs is recommended over lvdisplay.

OPTIONS

       See lvm for common options.

       -c, --colon
	      Generate colon separated output for easier parsing in scripts or programs.  N.B. lvs (8) provides considerably more control over the
	      output.

	      The values are:

	      * logical volume name
	      * volume group name
	      * logical volume access
	      * logical volume status
	      * internal logical volume number
	      * open count of logical volume
	      * logical volume size in sectors
	      * current logical extents associated to logical volume
	      * allocated logical extents of logical volume
	      * allocation policy of logical volume
	      * read ahead sectors of logical volume
	      * major device number of logical volume
	      * minor device number of logical volume

       -m, --maps
	      Display the mapping of logical extents to physical volumes and physical extents.

Examples
       "lvdisplay  -v  /dev/vg00/lvol2"  shows attributes of that logical volume.  If snapshot logical volumes have been created for this original
       logical volume, this command shows a list of all snapshot logical volumes and their status (active or inactive) as well.

       "lvdisplay /dev/vg00/snapshot" shows the attributes of this snapshot logical volume and also which original logical volume it is associated
       with.

SEE ALSO

       lvm(8), lvcreate(8), lvscan(8)

Sistina Software UK					 LVM TOOLS 2.02.44-cvs (02-17-09)					      LVDISPLAY(8)
All times are GMT -4. The time now is 09:45 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy