Yes!
You need enough space on all your 16 devices. lslv -l oravol will show you the affected devices.
Thanks for your help.
the output for lslv -l oravol ---------- Post updated at 04:09 PM ---------- Previous update was at 03:32 PM ----------
Quote:
Originally Posted by rbatte1
Are these local disks or hardware protected in some way? (SAN provided, RAID device etc.)
The reason I ask is that you have a single copy of each PP. On real hardware you might lose the LV if any disk fails. If it is hardware protected, then you might be causing yourself an IO overhead by striping. I know it sounds counter-intuitive, but I've seen issues where spreading IO according to how the OS sees it can cause contention on the real disks when a SAN also spreads the IO. Bizarrely we improved IO when we tried to create hot-spots as the OS saw it because the SAN then really did spread the heavy IO properly.
Can you explain a little more about what hardware you have in play?
Thanks,
Robin
Dear Robin,
Thanks for your support.
It's using SAN disks, and each LUN around 512GB and seperated into 8 individual raid group (RAID5), it's using a EMC VNX storage. The setup engineer was gone, so we don't have enough information under OS level.
Thanks.
---------- Post updated at 04:11 PM ---------- Previous update was at 04:09 PM ----------
Quote:
Originally Posted by vbe
we dont have an
either to unterstand how it is organised ( mirror between to bays? etc... ) And I may be wrong as now I use only mirror pools
It looks like you are in morror and yes you added new disks but are they one in each mrirror copy etc...
If you are stripped with strict policy you are stuck...you will have to add as many disks it needs to respect the stripping policy, but one way perhaps to see if true would be to do a reorgvg datavg as if the stripping is not strict, it will move blocks to unused disks and free the ones completely full, beware if this have never been done before ( running tht command...) it can take quite some time ( in hours...)
If it worked, you can try
and see if that works.. if so you are a happy guy...
Dear VBE,
Thanks for your advices.
If found some information on the internet that said need to use reorgvg, but I didn't use it before, so I don't know the risk and impact.
We just want to know is reorgvg is the only way under our situation!! Thanks.
---------- Post updated at 04:15 PM ---------- Previous update was at 04:11 PM ----------
The problem is, that you have upper bound = 16 in your LV configuration. It means your LV can be maximum on 16 physical volumes. It seems, that the disks, used by the LV, already full and either you must free up some space on these physical volumes by moving other logical volumes, or you change the LV configuration and allow it to span on the whole 18 physical volumes, you have in your volume group.
Dear agent.kgb,
we did the change the upper bound to 18 but failed. error message seem need to set the multiple of stripe width.
---------- Post updated at 06:16 PM ---------- Previous update was at 04:15 PM ----------
Quote:
Originally Posted by bakunin
I suggest to get rid of the ridiculous striping at all. Striping is a good idea if you hae physical disks and want to spread the load over all of them so that the overall response time of the (disk sub-)system gets better. It makes absolutely no sense at all with SAN disks (from the names of the hdisk devices i suppose you have an EMC storage).
To tell you the bad news up front: you will need a downtime to do this because it means deleting and recreating the LV. Still it is a good idea to do so because the further administration will be way easier once you did it.
I hope this helps.
bakunin
Dear Bakunin,
Thanks for your support.
Yes, we are using EMC VNX as storage box.
As you said that, when using SAN, there have no improvement to use striping?
For my understanding is that, striping is use for pool I/O (maybe not using SAN), let more disks work on I/O, to re-balance the I/O. But once use SAN, storage pool will balance the I/O into all disks. Am i right?
Thanks.
Last edited by rbatte1; 11-28-2016 at 08:51 AM..
Reason: Added ICODE tags
Hi All,
I am new to AIX.
I need to extend one Logical Volume it is jfs type on On AIX 5.1.
I have enough free space on the volume group for this extension
Can I use smitty chjfs , will this do it without interruptions to the application that is using this Logical Volume.
Thanks
Scampi (1 Reply)
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)
Hi,
Smit "Increase the Size of a Logical Volume" command failed. Output:
----------------------------------------------------------
Command: failed stdout: yes stderr: no
Before command completion, additional instructions may appear below.
The distribution of this command (111) failed on... (2 Replies)
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)
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)
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
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Want to extend the /home filesystem:
Filesystem kbytes used avail %used Mounted on
/dev/vg00/lvol4 262144 260088 2056 99% /home
root@server:./root # vgdisplay vg00
--- Volume groups ---
VG Name /dev/vg00
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 11
Open... (4 Replies)
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