Login or Register to Ask a Question and Join Our Community


AIX

Position of the logical volume on the physical volume

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Operating Systems AIX Position of the logical volume on the physical volume
# 8  
Old 01-16-2013
Quote:
Originally Posted by zxmaus
the outer edge of the disk has a faster rotational velocity than the slower inner edge and will whip around much more quickly on the outside than in the middle. However, because not all the data on the disk will be written to the outer edge as a result of the limitations of the physical placement of the data, the fastest seek times for the hard disk heads will be in the center area of the disk, where the head is most likely to pass on average.

Dear my senario is that i have a rootvg mirrored with hdisk0 and hdisk1

now i can't increase the file system for any lv becouse the region in hdisk0 is diffrent of hdisk1 , is there any way to make the region of the LV in hdisk0 same as hdisk1 .
# 9  
Old 01-16-2013
Quote:
Originally Posted by thecobra151
is there any way to make the region of the LV in hdisk0 same as hdisk1 .
Yes: remove the mirror of all the LVs so that the (used space of the) VG is on one disk only. Start a "reorgvg rootvg" then to rearrange all the LVs to be contiguous again. Once this is finished remirror the LVs again using the freed disk. The LVM should make the placement identical on the disk. If you are not satisfied with the result you can also create and use map files (see the man page of "mklv") to control the process.

I hope this helps.

bakunin
# 10  
Old 01-17-2013
Quote:
Originally Posted by thecobra151
Dear my senario is that i have a rootvg mirrored with hdisk0 and hdisk1

now i can't increase the file system for any lv becouse the region in hdisk0 is diffrent of hdisk1 , is there any way to make the region of the LV in hdisk0 same as hdisk1 .
Not being able to increase a logical volume is never related to the region placement. If you are mirrored and cannot increase a logical volume/filesystem - one or both are full (or less than two disks have space free for single mirrors, three disks have spece free for double mirrors (aka three copies).

Never is this related to regions.

A fairly efficient way to get a better reorganized layout is the process described above - however, start by correcting the regions as you would like them using chlv -e, remove a miror, and then remirror the volume group. reorgvg will do the same - as long as there is at least one PP free per disk. But it may take "forever" to complete.

Hope this helps
# 11  
Old 01-17-2013
this is a freash settings of my system

Code:
 
lspv -l hdisk0
hdisk0:
LV NAME LPs PPs DISTRIBUTION MOUNT POINT
hd6 4 4 00..00..04..00..00 N/A
hd5 1 1 01..00..00..00..00 N/A
loglv00 1 1 00..01..00..00..00 N/A
lg_dumplv 32 32 01..31..00..00..00 N/A
hd11admin 1 1 00..01..00..00..00 /admin
lv00 1 1 00..01..00..00..00 /audit
hd1 16 16 00..00..16..00..00 /home
hd3 24 24 00..14..10..00..00 /tmp
hd10opt 8 8 00..00..08..00..00 /opt
hd4 16 16 00..00..16..00..00 /
hd8 1 1 00..00..01..00..00 N/A
hd9var 56 56 00..07..25..24..00 /var
 
 
 
 
 
lspv -l hdisk1
hdisk1:
LV NAME LPs PPs DISTRIBUTION MOUNT POINT
hd6 4 4 00..00..04..00..00 N/A
hd5 1 1 01..00..00..00..00 N/A
loglv00 1 1 00..01..00..00..00 N/A
hd11admin 1 1 00..00..01..00..00 /admin
lv00 1 1 00..01..00..00..00 /audit
hd1 16 16 00..16..00..00..00 /home
hd3 24 24 00..00..24..00..00 /tmp
hd10opt 8 8 00..08..00..00..00 /opt
hd4 16 16 00..00..16..00..00 /
hd8 1 1 00..00..01..00..00 N/A
hd9var 56 56 00..56..00..00..00 /var
hd2 56 56 00..00..56..00..00 /usr
 
 
lsvg -p rootvg
rootvg:
PV_NAME PV STATE TOTAL PPs FREE PPs FREE
DISTRIBUTION
hdisk0 active 546 329
108..27..00..85..109
hdisk1 active 546 361
109..27..07..109..109
 
 
 
lsvg -l rootvg
rootvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT
POINT
hd5 boot 1 2 2 closed/syncd N/A
hd6 paging 4 8 2 open/syncd N/A
hd8 jfs2log 1 2 2 open/syncd N/A
hd4 jfs2 16 32 2 open/syncd /
hd2 jfs2 56 112 2 open/syncd /usr
hd9var jfs2 56 112 2 open/syncd /var
hd3 jfs2 24 48 2 open/syncd /tmp
hd1 jfs2 16 32 2 open/syncd /home
hd10opt jfs2 8 16 2 open/syncd /opt
lg_dumplv sysdump 32 32 1 open/syncd N/A
loglv00 jfslog 1 2 2 open/syncd N/A
lv00 jfs 1 2 2 open/syncd /audit
hd11admin jfs2 1 2 2 open/syncd /admin
 
 
chfs -a size=+1G /opt
0516-404 allocp: This system cannot fulfill the allocation request.
There are not enough free partitions or not enough physical volumes
to keep strictness and satisfy allocation requests. The command
should be retried with different allocation characteristics.
 
 
lspv -p hdisk0
hdisk0:
PP RANGE STATE REGION LV NAME TYPE MOUNT POINT
1-1 used outer edge hd5 boot N/A
2-109 free outer edge
110-110 used outer edge lg_dumplv sysdump N/A
111-114 used outer middle hd9var jfs2 /var
115-130 used outer middle lg_dumplv sysdump N/A
131-131 used outer middle loglv00 jfslog N/A
132-132 used outer middle lv00 jfs /audit
133-144 used outer middle lg_dumplv sysdump N/A
145-156 free outer middle
157-159 used outer middle hd9var jfs2 /var
160-176 used outer middle hd2 jfs2 /usr
177-191 free outer middle
192-192 used outer middle hd11admin jfs2 /admin
193-195 used outer middle lg_dumplv sysdump N/A
196-209 used outer middle hd3 jfs2 /tmp
210-219 used outer middle hd2 jfs2 /usr
220-220 used center hd8 jfs2log N/A
221-221 used center hd4 jfs2 /
222-234 used center hd2 jfs2 /usr
235-235 used center hd9var jfs2 /var
236-236 used center hd3 jfs2 /tmp
237-252 used center hd1 jfs2 /home
253-260 used center hd10opt jfs2 /opt
261-261 used center hd3 jfs2 /tmp
262-265 used center hd2 jfs2 /usr
266-280 used center hd4 jfs2 /
281-292 used center hd2 jfs2 /usr
293-300 used center hd3 jfs2 /tmp
301-323 used center hd9var jfs2 /var
324-327 used center hd6 paging N/A
328-328 used center hd9var jfs2 /var
329-360 free inner middle
361-384 used inner middle hd9var jfs2 /var
385-437 free inner middle
438-546 free inner edge

Moderator's Comments:
Mod Comment edit by bakunin: changed "PHP"-tags to "CODE"-tags. Please use "PHP"-tags only for PHP code (obviously) and "CODE"-tags for everything else.
Last edited by bakunin; 01-17-2013 at 09:34 AM..
# 12  
Old 01-17-2013
  • i have forgotten the cause but recall hearing of problems with rootvg - but might be solved with changing the vg to a BIG vg, versus normal.
Code:
# chvg -B rootvg

Check the man page first, it might be chvg -b inste
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. 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

2. Linux

Logical Volume to physical disk mapping

When installing Linux, I choose some default setting to use all the disk space. My server has a single internal 250Gb SCSI disk. By default the install appears to have created 3 logical volumes lv_root, lv_home and lv_swap. fdisk -l shows the following lab3.nms:/dev>fdisk -l Disk... (2 Replies)
Discussion started by: jimthompson
2 Replies

3. 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

4. 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

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. HP-UX

Unmount and remove all Logical vol.Volume group and physical disk

Hi, Someone please help me with how i can unmount and remove all the files systems from a cluster. This is being shared by two servers that are active_standby. (3 Replies)
Discussion started by: joeli
3 Replies

7. 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

8. 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

9. 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

10. UNIX for Dummies Questions & Answers

Physical volume- no free physical partitions

I was in smit, checking on disc space, etc. and it appears that one of our physical volumes that is part of a large volume group, has no free physical partitions. The server is running AIX 5.1. What would be the advisable step to take in this instance? (9 Replies)
Discussion started by: markper
9 Replies
Login or Register to Ask a Question