ASM - Discovering new disks

Hello,
I've a RAC 11g with ASM, on RedHat.
On the storage I had LUN's called emcpower*.
And I also have a file called 98-oracle.rules used to assign aliases to lun's names.
Aliases are asm*.
I had disks from asm0 to asm6, today I added asm7 to asm12.
I restarted the udev (start_udev), than I reboot the server.
I still can not see asm7-12 into /dev directory and ASM instance, of course, cannot discover them. I tried to reboot also the ASM instance on both nodes.
But nothing.
Did I miss something?
Thanks in advance,
Samuel Rabini

Billy Verreynne wrote:
Aman.... wrote:
Now probably the next step, a blog from Billy ;-) ?Don't think I'll ever take to blogging. It is too single sided. All about the blogger himself/herself. I prefer discussions (mailing lists and Usenet and forums like these) - where it is not about about a single person (or experiences of that person) and there is room for healthy and vigorous debate. And the chance to be wrong - as that is how we learn. :-)I won't attempt to win over from you in this discussion and its a very relevant reason as well for not doing the blogging :-) . As long as you are around over here and elsewhere , helping me and many others like me, I guess its fine :-) .
Congrats once again and regards.
Aman....

Similar Messages

ORA-15063: ASM discovered an insufficient number of disks for diskgroup "DB

Dear All,
we are moved our storage from hitachi to EMC . after come to emc no issue.
But few day before we are try to use old hitachi storage for our T&D,the same storage mounted in new server.
After that we are try to start the asm but it disk group not mounted .
It show following error....
ERROR at line 1:
ORA-15032: not all alterations performed
ORA-15063: ASM discovered an insufficient number of disks for diskgroup "DB01"
1) we are checked the 52 raw devices have oracle:dba permission we are verified.
2) all raw device can be viewed in v$asm_disk and state is normal.
3) we are tried asm_diskstring=* also
4) even it show same error.
1) My doubt is the asm meta data may be not correct how can i verifiy the the asm metadata and how can i resolve this asm error.
2) If i drop this asm diskgroup and recreate in same name and add all 52 disk to the group the data will be loss or not?
Thanks&regards
SS.vijaibabu

1) My doubt is the asm meta data may be not correct how can i verifiy the the asm metadata and how can i resolve this asm error.Asm metadata will get stored in asm_disks it's self. we cannot retrieve metadata unless you mount the diskgroup.Most probably these would be permission related of disks.
any pointings to alert log Errors of this operation.
>2) If i drop this asm diskgroup and recreate in same name and add all 52 disk to the group the data will be loss or not?
The header status of disks changes to FORMER ,once we fire drop on it.we cannot get back the data becase asm will format the disk after dropping.

After add (in a wrong way) a new disk in ASM, cluster don´t start

Hi,
Environment:
Oracle RAC 10gR2
2 nodes windows 2003 advanced server (node1 called "database1" and node2 called "database2").
ASM
san storage
Case:
My client has tried to add a new disk (in a environment san) in ASM with the next steps:
1. database1 and database2 are up.
2. instance ASM1 from database is up and instance ASM2 from database2 is down (I don´t know why¿¿¿¿¿¿¿??????????).
3. add a new disc from san storage to instance ASM1. At the end, a lot of errors show in screen due to instance ASM2 was down.
4. client tried to up +ASM2 and then , all the cluster crashed.
5. reboot boths nodes database1 and database2 , and Windows 2003 Server don´t start well (hung up, due to services from oracle cluster are "automatically start"-
6. disable oracle services in "not automatically start" and windows 2003 server start well.
7. now oracle rac don´t start, ASM don start, instances don´t start ....
what can I do? any idea?
Regards.
Laura

Did you try to bring the U1 and it's associated ASM instance up while the other node is shutdown? Are you using Oracle clusterware?

Add new disk(space) into exist ASM

Hi Experts,
We have a oracle 11.1 4 nodes RAC at red hat 5 kinux. we database build as 10.2.04 at ASM with two disk group.
the original DBA put all space into two diskgroup data+ 300G and FSDISK 1500G.
Now my boss ask to create second database in this server. But I found there are no canada disk is availuable to build two new diskgroup to support new second database.
Existing database is running over 2 years. How can we release 500G diskspace as canada disk for ASM from FSDISK group?
or
How can we add new disk into ASM?
We do not have special storage person in small sys/dba team.
I am looking for help!!
JIm

Hi nvengurl ,
It is nice to get your advice. some sr.DBA told me as" Two instances in the same database can share the disk-group"
other DBA told me as
Two different DATABASES cannot (remember, RAC uses a database with multiple instances). So technically you can share a diskgroup between instances, as long as they're in the same database."
some DBA said as Two separate instances cannot share a diskgroup"
I am not sure. please oracle expert and oracle company staff to confirm this point.
If I create two database with exist diskgroup. any performance or maintenance issue
I am looking for your help!!!
JIm

ORA-15063: ASM discovered an insufficient number of disks for diskgroup

Hello DBAs,
I have encountered this problem. I am using storage vendor snapshot capability. On my first node, I have 2 disks for ASM diskgroups. ORCL:DATA belongs to DATA diskgroup and ORCL:FLASH belongs to FLASH diskgroup. After making the snapshots of these two disks, I mapped them to my second host which already has ASM instance. I ran /etc/init.d/oracleasm scandisk and listdisks I see two disks. But when I start up ASM instance I get this error:
SQL> startup
ASM instance started
Total System Global Area 130023424 bytes
Fixed Size 2019032 bytes
Variable Size 102838568 bytes
ASM Cache 25165824 bytes
ORA-15032: not all alterations performed
ORA-15063: ASM discovered an insufficient number of disks for diskgroup "FLASH"
ORA-15063: ASM discovered an insufficient number of disks for diskgroup "DATA"
Of course, I have the asm_diskstring and asm_diskgroups parameter set in my init+ASM.ora file. The ASM version is identical across both hosts. I guess my question would be, is it possible to do this? Do I need to re-create the ASM disks using /etc/init.d/oracleasm? Any help is much appreciated.
Thanks,
TD

What is your configuration?
If you have AIX and EMC san, then refer to this metalink note: 467702.1
In my case, it was HP-UX and HP san EVA8200. But our problem was two different disks were presented to the two nodes, with same names by the unix admin/san admin guys.
Before they could figure out the problem, I had done a lot of research for few days to figure this out. Another problem I noticed in some cases was improper permissions. Either the db software owner didn't have permissions to the asm disks, or if the owner of both software was same, then the actual permissions/ownership of the shared raw devices was different on the two nodes.
Hope this helps. And I will appreciate once you fix the problem if you can also update this forum with your solution. That will help the community in future.
Thanks

ASM discovered an insufficient number of disks for diskgroup

Running RH4U3 and Oracle 10gr2
Every time I reboot my system, the minor number changed and i can't startup the ASM instance. Does any one know why this is happening? Any advise would be appreciated.
the minor number was 4 and 5, now after reboot i got::
# ls -l /dev/oracleasm/disks
total 0
brw-rw---- 1 ora dba 253, 4 Feb 21 10:10 VOL1
brw-rw---- 1 ora dba 8, 65 Feb 21 10:10 VOL2
I can't startup my ASM instance:
$ sqlplus "/ as sysdba"
SQL*Plus: Release 10.2.0.1.0 - Production on Wed Feb 21 10:13:03 2007
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to an idle instance.
SQL> startup
ASM instance started
Total System Global Area 83886080 bytes
Fixed Size 1217836 bytes
Variable Size 57502420 bytes
ASM Cache 25165824 bytes
ORA-15032: not all alterations performed
ORA-15063: ASM discovered an insufficient number of disks for diskgroup "OARCH"
y ASM instance:

I have no problem reading the disks.
$ dd if=/dev/oracleasm/disks/VOL1 of=/dev/null
485336+0 records in
485336+0 records out
$ dd if=/dev/oracleasm/disks/VOL2 of=/dev/null
741760+0 records in
741760+0 records out

New disk in ASM

Hi,
on 10g R2 ,Unix HP and ASM 10.2
a new filesystem would be added by system (Unix administrator) what should I do as DBA to :
-see it in ASM ?
-be able to create datafiles on it ?
Thank you.

Hi,
First you will have to find the new disk with fdisk -l
then you will have to create a partition, if not already done
fdisk /dev/<your_disk>Use oracleasm to create a disk and scan for the disk on the other nodes
oracleasm createdisk <DISKNAME> /dev/<your_disk>
oracleasm scandisksto make sure the disk exist you can use
oracleasm listdisksLog into ASM with sqlplus and run
alter diskgroup <your_diskgroup_name> ADD DISK '/dev/<your_disk>';you can look at "http://download.oracle.com/docs/cd/B28359_01/server.111/b31107/asmdiskgrps.htm#CHDBIFGA" for more info on how to admin ASM diskgroups.
Regards.

RAC with ASM and shared disks?

Hi all,
Can someone clarify this little point please. If I use ASM as my storage with a RAC database, I have to configure these nodes to shared disks. At least this is what the UG says ...
When you create a disk group for a cluster or add new disks to an existing clustered disk group, you only need to prepare the underlying physical storage on shared disks. The shared disk requirement is the only substantial difference between using ASM in a RAC database compared to using it in a single-instance Oracle database. ASM automatically re-balances the storage load after you add or delete a disk or disk group.
With my 9i databases, I used HCAMP to allow for concurrent VG access among the nodes. My questions are ...
1) How can I share this storage as stated above without using HACMP? My understanding is with 10g I no longer have to use it.
2) Can Oracle's clusterware be used to share storage? I have not seen any indication that it does.
3) Does this mean I still have to use HCAMP with 10g crs to allow shared storage?
Thank you

"...meaning visible to all the participating nodes, which you don't need HACMP..."
This is one step forward, but still not clear. On unix, storage is presented to ASM as raw volumes. As such, how can these volumes be visible on all nodes without using HCAMP (or whatever 3rd party clusterware you are using). Presenting raw volumes on several nodes is something that is not done at OS level without using some clusterware functionality.
I do understand that storage or LUNs can be shared at the SAN fabric level. But then, these LUNs are carved in bug chunks and I would like to be able to allocate storage at much granular level using raw partitions.
So all in all, here are my questions ...
1) On unix platforms, can ASM disks be LUNs, raw volumes, or may be both?
2) If raw volumes, how are these shared (or made visible) without using 3rd party clusterware? Having managed 9i RAC, it was the function of HACMP to make these volumes visible on all nodes, otherwise, we had to imp/exp VGs on all nodes to make them visible.
Thank you

Original iMac will not boot from new disk

I am having considerable difficulty getting a new disk to boot in an original 'Bondi blue' iMac.
I think I have researched this issue reasonably well and found a few references to it but no solution. I have more resources than most and have tried every trick I know. The story at the following link is not dissimilar to my experience:
http://www.applefritter.com/node/20518
Details:
iMac - original 233 MHz revision A with 160 MB RAM
New disk - 120 GB 7200 rpm Western Digital disk type WD1200SB
Format - HFS+ with 7 GB first partition and 107 GB second partition
Jumpers - both CD and disk set to master - normal for this iMac I believe
The iMac will seldom boot from OS X 10.3 on first partition or OS 9.2.2 on second partition with or without the other OS totally removed. I have reformatted several times and played with several disk drivers. I have zapped PRAM a few times. I sometimes get a grey screen but more frequently get a flashing question mark.
I can mount both volumes when booted from a CD and every test shows that they behave as expected. The disk boots properly in a G4.
I am prepared to try anything but I would particularly appreciate advice from somebody who knows what the problem is.

Eureka - it works - thanks very much.
It now boots from OS 9.2.2 on both partitions every time. I have yet to replaced the OS X that I removed earlier but I am not expecting difficulties.
My view is that http://docs.info.apple.com/article.html?artnum=25249 is badly written. I assume that item 4 should read 'OS X' and not "Mac OS". It may have been written on the assumption that users only want OS X and Classic on a single partition. My experience, particularly with early iMacs, is that it pays to have 2 bootable partitions and it is expedient to have OS X on one and OS 9.2.2 on the other with the OS 9.2.2 being used for Classic and for direct booting into OS 9.2.2.
My error was in paying insufficient attention to
http://wdc.custhelp.com/cgi-bin/wdc.cfg/php/enduser/stdadp.php?p_faqid=1277&pcreated=1095792241#jumper
which clearly indicates jumper positions for single drives although a few words about it would underline the point. I had already discovered that these iMacs normally have both CD and disk set to master so should have realised that strictly they are 'single drives'. I had initially used the clear, but misleading, drive silk screen printing, ie CS, slave, master to set the jumper but should have changed it when checking the WD site later. Perhaps they could use this thread to update their FAQs - I will mention it to them.
In answer to those, on this thread and elsewhere, who were not happy with my sloppy copying of OS 9.x, I discovered some years ago that as long as you 'blessed' the end result in situ with one of the free OS 9.x updaters it is surprising what you can get away with. - I am not advising anybody to do this unless it is within the terms of their Apple license!
Now I wonder if I should stick with OS X 10.3 or if it is worth trying OS X 10.4 with
http://eshop.macsales.com/OSXCenter/XPostFacto/Framework.cfm?page=XPostFacto.htm l
Does anybody know how satisfactory it is and if it has serious memory or speed implications? My only slightly unusual software is Cisco VPN client.

Add new disk

HI Expert
oracle 11.2.2 ASM RAC running on OEL 5.6
we have a storage 5.6 TB but allocated to Database is 500GB and now we have a plan to increase it to 1 TB for a DB
all disk that we have under this path
[root@medi01 disks]# ls
DIAK00 DIAK01 DIAK02 DIAK03 DIAK04 DIAK05 DIAK06
[root@medi01 disks]# pwd
/dev/oracleasm/disksfrom the storage side i create new fdisk and do a represantive in both node but what i do now ?
shill i need to mount it or not ? or without mount and create new disk by ASM ?
so please guide me how can i do that , by ASM ?

please help me the disk01 is disappear
[root@medi01 disks]# ls
DIAK00 DIAK02 DIAK03 DIAK04 DIAK05 DIAK06
[root@medi01 disks]#
{code
but from OEM it exist how can i added again ?Errors in file /home/app/oracle/diag/rdbms/medi/MEDI1/trace/MEDI1_ora_8086.trc:
ORA-15025: could not open disk "/dev/oracleasm/disks/DIAK01"
ORA-27041: unable to open file
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
Errors in file /home/app/oracle/diag/rdbms/medi/MEDI1/trace/MEDI1_ora_9290.trc:
ORA-15025: could not open disk "/dev/oracleasm/disks/DIAK01"
ORA-27041: unable to open file
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
Errors in file /home/app/oracle/diag/rdbms/medi/MEDI1/trace/MEDI1_ora_7996.trc:
ORA-15025: could not open disk "/dev/oracleasm/disks/DIAK01"
ORA-27041: unable to open file
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
[oracle@medi01 trace]$

I have just upgraded to Mavericks and have been using Time Machine on an external disk with Snow Leopard. Can I continue to backup with Time Machine on the same external disk or do I need a new disk since the operating system has changed?

I have just upgraded to Mavericks and have been using Time Machine on an external disk with Snow Leopard. Can I continue to backup with Time Machine on the same external disk or do I need a new disk since the operating system has changed?

Hi there,
I found that Time Machine in Mavericks will sort it all out for you. You shouldn't need to buy another backup drive, unless you have insufficient space left and can't afford to delete whats on there. It should just work fine.

Can someone please tell me how to format a new disk to ZFS format?

I have a Sun v240 with Solaris 10 update 8 installed on a single 73GB harddisk. Everything is working fine. I just purchased a another identical harddisk online. I plugged the disk into my v240 and ran 'devfsadm' and solaris found the new disk. I want to add this disk to my existing ZFS pool as a mirror. However, this disk was originally formatted with a UFS file system. So when I run:
zpool attach rpool c1t0d0 c1t1d0I get:
/dev/dsk/c1t1d0s0 contains a ufs filesystem.I understand the error message but I don't know how to format the disk to have a ZFS file system instead. Note that I am extremely new to Solaris, ZFS, and pretty much everything Sun - I bought this server on eBay so that I could learn more about it. It's been pretty fun so far but need some help here and there.
For some reason I can't find a single hit on Google telling me how to just simply format a disk to ZFS. Can I use the 'format' command? Maybe you don't "format" disks for ZFS? I have no idea. I might not have the right terminology. If so, apologies. Can anyone help me on this?
Thanks a lot! =D
Jonathon

Yes, you were right. The partitions were totally different. Here is what I saw:
For c1t0d0:
# format
Part      Tag    Flag     Cylinders         Size            Blocks
0       root    wm       0 - 14086       68.35GB    (14087/0/0) 143349312
1 unassigned    wm       0                0         (0/0/0)             0
2     backup    wm       0 - 14086       68.35GB    (14087/0/0) 143349312
3 unassigned    wm       0                0         (0/0/0)             0
4 unassigned    wm       0                0         (0/0/0)             0
5 unassigned    wm       0                0         (0/0/0)             0
6 unassigned    wm       0                0         (0/0/0)             0
7 unassigned    wm       0                0         (0/0/0)             0For c1t1d0:
# format
Part      Tag    Flag     Cylinders         Size            Blocks
0       root    wm       0 - 12865       62.43GB    (12866/0/0) 130924416
1       swap    wu   12866 - 14079        5.89GB    (1214/0/0)   12353664
2     backup    wm       0 - 14086       68.35GB    (14087/0/0) 143349312
3 unassigned    wm   14080 - 14086       34.78MB    (7/0/0)         71232
4 unassigned    wm       0                0         (0/0/0)             0
5 unassigned    wm       0                0         (0/0/0)             0
6 unassigned    wm       0                0         (0/0/0)             0
7 unassigned    wm       0                0         (0/0/0)             0So then I ran the following:
# prtvtoc /dev/rdsk/c1t0d0s0 | fmthard -s - /dev/rdsk/c1t1d0s0
fmthard: New volume table of contents now in place.Then I rechecked the partition table for c1t1d0:
# format
Part      Tag    Flag     Cylinders         Size            Blocks
0       root    wm       0 - 14086       68.35GB    (14087/0/0) 143349312
1 unassigned    wu       0                0         (0/0/0)             0
2     backup    wm       0 - 14086       68.35GB    (14087/0/0) 143349312
3 unassigned    wu       0                0         (0/0/0)             0
4 unassigned    wu       0                0         (0/0/0)             0
5 unassigned    wu       0                0         (0/0/0)             0
6 unassigned    wu       0                0         (0/0/0)             0
7 unassigned    wu       0                0         (0/0/0)             0Woo-hoo!! It matches the first disk now! :)
Then I tried to attach the new disk to the pool again:
# zpool attach -f rpool c1t0d0s0 c1t1d0s0
Please be sure to invoke installboot(1M) to make 'c1t1d0s0' bootable.
Make sure to wait until resilver is done before rebooting.
bash-3.00# zpool status
pool: rpool
state: ONLINE
status: One or more devices is currently being resilvered. The pool will
        continue to function, possibly in a degraded state.
action: Wait for the resilver to complete.
scrub: resilver in progress for 0h0m, 0.40% done, 0h58m to go
config:
        NAME          STATE     READ WRITE CKSUM
        rpool         ONLINE       0     0     0
          mirror-0    ONLINE       0     0     0
            c1t0d0s0 ONLINE       0     0     0
            c1t1d0s0 ONLINE       0     0     0 30.3M resilvered
errors: No known data errorsBoo-yah!!! ++Does little dance++
Then, after resilvering completed I ran:
# installboot -F zfs /usr/platform/`uname -i`/lib/fs/zfs/bootblk /dev/rdsk/c1t1d0s0I think I'm starting to understand this now. I also shutdown the server to the OpenBoot prompt and booted off of the new disk and it worked! Also, my bootup time to login has drastically decreased - I would say it's about half the time it was before I added the mirror disk. So I believe the server is properly reading from both disks simultaneously in order to get better bandwidth. Cool! :)
Thanks for the help!
Jonathon

Creating a new disk inage

I am trying to make a new dvd from another one and in disc utilities when new image is clicked the error message tells me "permission is denied. " If I click, verify permissions, before clicking New Image it tells me"Not available because the selected disk is set to ignore ownership." The disk I am trying to make a copy of has an allowance of 100 copies from the author.
How can I fix this??? Also my disk self ejects sometimes 20 seconds after I insert it.

Duplicate a CD or DVD
1. Insert the DVD/CD;
2. Open Disk Utility, and select the DVD/CD from the left side list (select the DVD/CD icon on top);
3. from the DU File menu select New | Disk Image from Disk 1;
4. Choose to format the disk image as DVD/CD Master, name the disk image and click Save;
5. When the .cdr file is finished select it with mouse and press COMMAND-I to open the Get Info and check the box to lock the file;
6. Choose the .cdr file from the left side list, click Burn, and insert a new, blank DVD or CD.

Recovery from time machine onto new disk drive

i am replacing my failed G5 internal disk drive with a new disk drive. can i recover everything (including OS) from my time machine backup or do i need to install the OS (Leopard) first and then recover from time machine?

You can boot off your 10.5 installer disc that was usable to install 10.5 on your G5 and run the restore from its Time Machine restore in the Utilities menu of the installer. Assuming the backup of course was done of the entire hard disk when you did a Time Machine backup. If it wasn't of the entire hard disk, then the restored backup won't be bootable, and you'll need to install 10.5 first.

I am going to buy a bigger hard drive. i am operating on Lion. how do i install my os on the new disk? i can't use time machine.

i am going to buy a bigger hard drive. i am operating on Lion. how do i install my os on the new disk? i can't use time machine.

Plug this new drive as an external drive, boot from lion recovery "command-R" more info here: http://www.apple.com/macosx/recovery/
Open disk utility, format and partition the disk at your will (allways Mac OS plus...) and go ahead with the install, don't care if it tells you to whait thousands of hours, I did get installed in 2 hours and a half last week.
If you can't plug the disk as an external one, you'll have first to do an USB disk recovery utility, as easy as download the recovery utility and install it in an USB disk, you can find anything from the link above, plug the disk as a single master, and boot from the USB you created before.
Tell me how it went!!!

ASM - Discovering new disks

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