In this blog entry is described adding a set of new LUNs to the SCST SAN for presentation to a KVM Oracle guest to provision a new Oracle ASM diskgroup on that guest.
In this example, 8 new 2Gb files for file-backed SCST LUNs are created. Eight files are created to follow the Violin Memory best practice on flash for creating Oracle ASM diskgroups with 8 LUNs. The size of 2Gb is chosen because a minimum of 15Gb total space is needed for the installation of the SLOB2 tablespace as described here at the flashdba blog as shown below.
[root@oracle651 scst_oracle632]# dd if=/dev/zero of=/scst_oracle632/AsmSlb632_01.img bs=2048 count=0 seek=1M
0+0 records in
0+0 records out
0 bytes (0 B) copied, 0.00052062 s, 0.0 kB/s
[root@oracle651 scst_oracle632]#
Use the same command, or script it to run iteratively, to create a total of eight 2Gb files for file-backed LUNs. When done check that they have all been created as shown below.
[root@oracle651 scst_oracle631]# ls -l AsmSlb*
-rw-r--r-- 1 root root 2147483648 Aug 22 14:06 AsmSlb631_01.img
-rw-r--r-- 1 root root 2147483648 Aug 22 14:06 AsmSlb631_02.img
-rw-r--r-- 1 root root 2147483648 Aug 22 14:06 AsmSlb631_03.img
-rw-r--r-- 1 root root 2147483648 Aug 22 14:06 AsmSlb631_04.img
-rw-r--r-- 1 root root 2147483648 Aug 22 14:06 AsmSlb631_05.img
-rw-r--r-- 1 root root 2147483648 Aug 22 14:06 AsmSlb631_06.img
-rw-r--r-- 1 root root 2147483648 Aug 22 14:07 AsmSlb631_07.img
-rw-r--r-- 1 root root 2147483648 Aug 22 14:07 AsmSlb631_08.img
[root@oracle651 scst_oracle631]#
Create a script to open the new files as file-backed LUN devices, and to add them to the SAN. The script used is shown below.
[root@oracle651 scripts]# cat crt_slob_luns_1.sh
scstadmin -open_dev AsmSlb631_01 -handler vdisk_fileio -attributes filename=/scst_oracle631/AsmSlb631_01.img
scstadmin -open_dev AsmSlb631_02 -handler vdisk_fileio -attributes filename=/scst_oracle631/AsmSlb631_02.img
scstadmin -open_dev AsmSlb631_03 -handler vdisk_fileio -attributes filename=/scst_oracle631/AsmSlb631_03.img
scstadmin -open_dev AsmSlb631_04 -handler vdisk_fileio -attributes filename=/scst_oracle631/AsmSlb631_04.img
scstadmin -open_dev AsmSlb631_05 -handler vdisk_fileio -attributes filename=/scst_oracle631/AsmSlb631_05.img
scstadmin -open_dev AsmSlb631_06 -handler vdisk_fileio -attributes filename=/scst_oracle631/AsmSlb631_06.img
scstadmin -open_dev AsmSlb631_07 -handler vdisk_fileio -attributes filename=/scst_oracle631/AsmSlb631_07.img
scstadmin -open_dev AsmSlb631_08 -handler vdisk_fileio -attributes filename=/scst_oracle631/AsmSlb631_08.img
scstadmin -write_config /etc/scst.conf
scstadmin -add_lun 20 -driver iscsi -target iqn.2014-08.org.vmem:oracle651.san.asm.luns -group oracle631 -device AsmSlb631_01
scstadmin -add_lun 21 -driver iscsi -target iqn.2014-08.org.vmem:oracle651.san.asm.luns -group oracle631 -device AsmSlb631_02
scstadmin -add_lun 22 -driver iscsi -target iqn.2014-08.org.vmem:oracle651.san.asm.luns -group oracle631 -device AsmSlb631_03
scstadmin -add_lun 23 -driver iscsi -target iqn.2014-08.org.vmem:oracle651.san.asm.luns -group oracle631 -device AsmSlb631_04
scstadmin -add_lun 24 -driver iscsi -target iqn.2014-08.org.vmem:oracle651.san.asm.luns -group oracle631 -device AsmSlb631_05
scstadmin -add_lun 25 -driver iscsi -target iqn.2014-08.org.vmem:oracle651.san.asm.luns -group oracle631 -device AsmSlb631_06
scstadmin -add_lun 26 -driver iscsi -target iqn.2014-08.org.vmem:oracle651.san.asm.luns -group oracle631 -device AsmSlb631_07
scstadmin -add_lun 27 -driver iscsi -target iqn.2014-08.org.vmem:oracle651.san.asm.luns -group oracle631 -device AsmSlb631_08
scstadmin -write_config /etc/scst.conf
[root@oracle651 scripts]#
The LUN numbers used in the above script are determined by checking the current LUN number usage of the SAN as shown below. Since "19" is the highest-numbered LUN currently, the above script starts with LUN "20".
[root@oracle651 scst_oracle631]# scstadmin -list_group oracle631
Collecting current configuration: done.
Driver: iscsi
Target: iqn.2014-08.org.vmem:oracle651.san.asm.luns
Driver/target 'iscsi/iqn.2014-08.org.vmem:oracle651.san.asm.luns' has no associated LUNs.
Group: oracle631
Assigned LUNs:
LUN Device
-----------------
0 AsmSys631_01
1 AsmDat631_01
10 AsmRec631_02
11 AsmRec631_03
12 AsmRec631_04
13 AsmRec631_05
14 AsmRec631_06
15 AsmRec631_07
16 AsmRec631_08
18 disk0
19 disk1
2 AsmDat631_02
3 AsmDat631_03
4 AsmDat631_04
5 AsmDat631_05
6 AsmDat631_06
7 AsmDat631_07
8 AsmDat631_08
9 AsmRec631_01
Assigned Initiators:
Initiator
----------------------------------
iqn.2014-08.org.vmem:oracle631.asm
All done.
[root@oracle651 scst_oracle631]#
Run the script to create and attach the file-backed LUNs to the SAN target. The expected normal output is shown below.
[root@oracle651 scripts]# ./crt_slob_luns_1.sh
Collecting current configuration: done.
-> Making requested changes.
-> Opening device 'AsmSlb631_01' using handler 'vdisk_fileio': done.
-> Done.
All done.
Collecting current configuration: done.
-> Making requested changes.
-> Opening device 'AsmSlb631_02' using handler 'vdisk_fileio': done.
-> Done.
All done.
Collecting current configuration: done.
-> Making requested changes.
-> Opening device 'AsmSlb631_03' using handler 'vdisk_fileio': done.
-> Done.
All done.
Collecting current configuration: done.
-> Making requested changes.
-> Opening device 'AsmSlb631_04' using handler 'vdisk_fileio': done.
-> Done.
All done.
Collecting current configuration: done.
-> Making requested changes.
-> Opening device 'AsmSlb631_05' using handler 'vdisk_fileio': done.
-> Done.
All done.
Collecting current configuration: done.
-> Making requested changes.
-> Opening device 'AsmSlb631_06' using handler 'vdisk_fileio': done.
-> Done.
All done.
Collecting current configuration: done.
-> Making requested changes.
-> Opening device 'AsmSlb631_07' using handler 'vdisk_fileio': done.
-> Done.
All done.
Collecting current configuration: done.
-> Making requested changes.
-> Opening device 'AsmSlb631_08' using handler 'vdisk_fileio': done.
-> Done.
All done.
Collecting current configuration: done.
Writing current configuration to file '/etc/scst.conf'..
All done.
Collecting current configuration: done.
-> Making requested changes.
-> Adding device 'AsmSlb631_01' at LUN 20 to driver/target/group 'iscsi/iqn.2014-08.org.vmem:oracle651.san.asm.luns/oracle631': done.
-> Driver/target is not a fibre channel target, ignoring.
-> Done.
All done.
Collecting current configuration: done.
-> Making requested changes.
-> Adding device 'AsmSlb631_02' at LUN 21 to driver/target/group 'iscsi/iqn.2014-08.org.vmem:oracle651.san.asm.luns/oracle631': done.
-> Driver/target is not a fibre channel target, ignoring.
-> Done.
All done.
Collecting current configuration: done.
-> Making requested changes.
-> Adding device 'AsmSlb631_03' at LUN 22 to driver/target/group 'iscsi/iqn.2014-08.org.vmem:oracle651.san.asm.luns/oracle631': done.
-> Driver/target is not a fibre channel target, ignoring.
-> Done.
All done.
Collecting current configuration: done.
-> Making requested changes.
-> Adding device 'AsmSlb631_04' at LUN 23 to driver/target/group 'iscsi/iqn.2014-08.org.vmem:oracle651.san.asm.luns/oracle631': done.
-> Driver/target is not a fibre channel target, ignoring.
-> Done.
All done.
Collecting current configuration: done.
-> Making requested changes.
-> Adding device 'AsmSlb631_05' at LUN 24 to driver/target/group 'iscsi/iqn.2014-08.org.vmem:oracle651.san.asm.luns/oracle631': done.
-> Driver/target is not a fibre channel target, ignoring.
-> Done.
All done.
Collecting current configuration: done.
-> Making requested changes.
-> Adding device 'AsmSlb631_06' at LUN 25 to driver/target/group 'iscsi/iqn.2014-08.org.vmem:oracle651.san.asm.luns/oracle631': done.
-> Driver/target is not a fibre channel target, ignoring.
-> Done.
All done.
Collecting current configuration: done.
-> Making requested changes.
-> Adding device 'AsmSlb631_07' at LUN 26 to driver/target/group 'iscsi/iqn.2014-08.org.vmem:oracle651.san.asm.luns/oracle631': done.
-> Driver/target is not a fibre channel target, ignoring.
-> Done.
All done.
Collecting current configuration: done.
-> Making requested changes.
-> Adding device 'AsmSlb631_08' at LUN 27 to driver/target/group 'iscsi/iqn.2014-08.org.vmem:oracle651.san.asm.luns/oracle631': done.
-> Driver/target is not a fibre channel target, ignoring.
-> Done.
All done.
Collecting current configuration: done.
Writing current configuration to file '/etc/scst.conf'..
All done.
[root@oracle651 scripts]#
Verify that the LUNs have been added to the SAN by re-running the "scstadmin -list_group oracle631" command as shown below. The bolded LUNs are the newly-added LUNs.
[root@oracle651 scripts]# scstadmin -list_group oracle631
Collecting current configuration: done.
Driver: iscsi
Target: iqn.2014-08.org.vmem:oracle651.san.asm.luns
Driver/target 'iscsi/iqn.2014-08.org.vmem:oracle651.san.asm.luns' has no associated LUNs.
Group: oracle631
Assigned LUNs:
LUN Device
-----------------
20 AsmSlb631_01
21 AsmSlb631_02
22 AsmSlb631_03
23 AsmSlb631_04
24 AsmSlb631_05
25 AsmSlb631_06
26 AsmSlb631_07
27 AsmSlb631_08 0 AsmSys631_01
1 AsmDat631_01
10 AsmRec631_02
11 AsmRec631_03
12 AsmRec631_04
13 AsmRec631_05
14 AsmRec631_06
15 AsmRec631_07
16 AsmRec631_08
18 disk0
19 disk1
2 AsmDat631_02
20 AsmSlb631_01
21 AsmSlb631_02
22 AsmSlb631_03
23 AsmSlb631_04
24 AsmSlb631_05
25 AsmSlb631_06
26 AsmSlb631_07
27 AsmSlb631_08
3 AsmDat631_03
4 AsmDat631_04
5 AsmDat631_05
6 AsmDat631_06
7 AsmDat631_07
8 AsmDat631_08
9 AsmRec631_01
Assigned Initiators:
Initiator
----------------------------------
iqn.2014-08.org.vmem:oracle631.asm
All done.
[root@oracle651 scripts]#
The LUNs should now be visible on the KVM Oracle guest as new multipath LUNs of the form "/dev/mapper/mpath*" on oracle631 as shown below.
[root@oracle631 ~]# ls -lrt /dev/mapper
total 0
crw-rw---- 1 root root 10, 236 Aug 22 13:21 control
lrwxrwxrwx 1 root root 7 Aug 22 13:21 vg_oracle631-lv_swap -> ../dm-1
lrwxrwxrwx 1 root root 7 Aug 22 13:21 vg_oracle631-lv_root -> ../dm-0
lrwxrwxrwx 1 root root 7 Aug 22 13:21 vg_u00-lv_oracle -> ../dm-2
lrwxrwxrwx 1 root root 8 Aug 22 13:21 ASM_4096B_1 -> ../dm-17
lrwxrwxrwx 1 root root 8 Aug 22 13:21 ASM_0512B_1 -> ../dm-21
lrwxrwxrwx 1 root root 7 Aug 22 13:21 ASM_RECO6 -> ../dm-3
lrwxrwxrwx 1 root root 7 Aug 22 13:21 ASM_RECO4 -> ../dm-4
lrwxrwxrwx 1 root root 7 Aug 22 13:21 ASM_RECO3 -> ../dm-5
lrwxrwxrwx 1 root root 7 Aug 22 13:21 ASM_SYSD1 -> ../dm-6
lrwxrwxrwx 1 root root 7 Aug 22 13:21 ASM_RECO1 -> ../dm-7
lrwxrwxrwx 1 root root 7 Aug 22 13:21 ASM_RECO2 -> ../dm-8
lrwxrwxrwx 1 root root 7 Aug 22 13:21 ASM_RECO7 -> ../dm-9
lrwxrwxrwx 1 root root 8 Aug 22 13:21 ASM_DATA3 -> ../dm-10
lrwxrwxrwx 1 root root 8 Aug 22 13:21 ASM_DATA5 -> ../dm-11
lrwxrwxrwx 1 root root 8 Aug 22 13:21 ASM_DATA1 -> ../dm-12
lrwxrwxrwx 1 root root 8 Aug 22 13:21 ASM_DATA2 -> ../dm-13
lrwxrwxrwx 1 root root 8 Aug 22 13:21 ASM_DATA6 -> ../dm-14
lrwxrwxrwx 1 root root 8 Aug 22 13:21 ASM_DATA8 -> ../dm-15
lrwxrwxrwx 1 root root 8 Aug 22 13:21 ASM_DATA4 -> ../dm-16
lrwxrwxrwx 1 root root 8 Aug 22 13:21 ASM_DATA7 -> ../dm-18
lrwxrwxrwx 1 root root 8 Aug 22 13:21 ASM_RECO5 -> ../dm-19
lrwxrwxrwx 1 root root 8 Aug 22 13:21 ASM_RECO8 -> ../dm-20
lrwxrwxrwx 1 root root 8 Aug 22 14:48 mpathaq -> ../dm-23
lrwxrwxrwx 1 root root 8 Aug 22 14:48 mpathap -> ../dm-22
lrwxrwxrwx 1 root root 8 Aug 22 14:48 mpathas -> ../dm-25
lrwxrwxrwx 1 root root 8 Aug 22 14:48 mpathar -> ../dm-24
lrwxrwxrwx 1 root root 8 Aug 22 14:48 mpathaw -> ../dm-29
lrwxrwxrwx 1 root root 8 Aug 22 14:48 mpathau -> ../dm-27
lrwxrwxrwx 1 root root 8 Aug 22 14:48 mpathav -> ../dm-28
lrwxrwxrwx 1 root root 8 Aug 22 14:48 mpathat -> ../dm-26
[root@oracle631 ~]#
The LUNs need to be configured in /etc/multipath.conf next. Determine the WWN of the eight new LUNs as shown below.
[root@oracle631 ~]# multipath -ll -v2 | grep AsmSlb
mpathaw (23964396336383935) dm-29 SCST_FIO,AsmSlb631_05
mpathav (26139376263303063) dm-28 SCST_FIO,AsmSlb631_06
mpathau (26261643935383762) dm-27 SCST_FIO,AsmSlb631_07
mpathat (23564613035323836) dm-26 SCST_FIO,AsmSlb631_08
mpathas (26634353333396137) dm-25 SCST_FIO,AsmSlb631_03
mpathar (23865336566306532) dm-24 SCST_FIO,AsmSlb631_04
mpathaq (26433313630393439) dm-23 SCST_FIO,AsmSlb631_01
mpathap (26537663161316430) dm-22 SCST_FIO,AsmSlb631_02
[root@oracle631 ~]#
Configure the LUNs in /etc/multipath.conf using the above information from multipath -ll -v2 as shown below. New entries for the SLOB tablespace are in bold.
[root@oracle631 ~]# cat /etc/multipath.conf
# Configuration file for device mapper multipath.
# For a complete list of the default configuration values:
# /usr/share/doc/device-mapper-multipath-0.4.9/multipath.conf.defaults
# For a list of configuration options with descriptions:
# /usr/share/doc/device-mapper-multipath-0.4.9/multipath.conf.annotated
defaults {
user_friendly_names yes
}
blacklist {
devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
devnode "^hd[a-z]"
}
devices {
device {
vendor "SCST_BIO"
product "Direct-Access"
path_grouping_policy multibus
path_selector "round-robin 0"
failback immediate
rr_min_io 1
rr_weight priorities
}
}
multipaths {
multipath {
wwid 26162356632353435
alias ASM_4096B_1
}
multipath {
wwid 26238666462643332
alias ASM_0512B_1
}
multipath {
wwid 23863316131356162
alias ASM_4096F_1
}
multipath {
wwid 23431613666613765
alias ASM_SYSD1
}
multipath {
wwid 2656666396337382d
alias ASM_DATA8
}
multipath {
wwid 26539383639363835
alias ASM_DATA7
}
multipath {
wwid 26661323430656632
alias ASM_DATA6
}
multipath {
wwid 26365633361363662
alias ASM_DATA5
}
multipath {
wwid 26464363133653163
alias ASM_DATA4
}
multipath {
wwid 26137306366373539
alias ASM_DATA3
}
multipath {
wwid 26234616536663265
alias ASM_DATA2
}
multipath {
wwid 23830343963376237
alias ASM_DATA1
}
multipath {
wwid 23164333132623134
alias ASM_RECO1
}
multipath {
wwid 23239643638333864
alias ASM_RECO2
}
multipath {
wwid 23361373431626661
alias ASM_RECO3
}
multipath {
wwid 23430313964326266
alias ASM_RECO4
}
multipath {
wwid 23533626234616338
alias ASM_RECO5
}
multipath {
wwid 23637356365323531
alias ASM_RECO6
}
multipath {
wwid 23734666537613236
alias ASM_RECO7
}
multipath {
wwid 23933383737306462
alias ASM_RECO8
}
multipath {
wwid 23638393630336633
alias ASM_TEST1
}
multipath {
wwid 26433313630393439
alias ASM_SLOB1
}
multipath {
wwid 26537663161316430
alias ASM_SLOB2
}
multipath {
wwid 26634353333396137
alias ASM_SLOB3
}
multipath {
wwid 23865336566306532
alias ASM_SLOB4
}
multipath {
wwid 23964396336383935
alias ASM_SLOB5
}
multipath {
wwid 26139376263303063
alias ASM_SLOB6
}
multipath {
wwid 26261643935383762
alias ASM_SLOB7
}
multipath {
wwid 23564613035323836
alias ASM_SLOB8
}
}
[root@oracle631 ~]#
Restart the multipathd service to apply the new friendly names to the new SLOB LUNs as shown below in bolded.
[root@oracle631 ~]# service multipathd restart
ok
Stopping multipathd daemon: [ OK ]
Starting multipathd daemon: [ OK ]
[root@oracle631 ~]# ls -l /dev/mapper
total 0
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_0512B_1 -> ../dm-21
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_4096B_1 -> ../dm-17
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_DATA1 -> ../dm-12
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_DATA2 -> ../dm-13
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_DATA3 -> ../dm-10
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_DATA4 -> ../dm-16
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_DATA5 -> ../dm-11
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_DATA6 -> ../dm-14
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_DATA7 -> ../dm-18
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_DATA8 -> ../dm-15
lrwxrwxrwx 1 root root 7 Aug 22 15:09 ASM_RECO1 -> ../dm-7
lrwxrwxrwx 1 root root 7 Aug 22 15:09 ASM_RECO2 -> ../dm-8
lrwxrwxrwx 1 root root 7 Aug 22 15:09 ASM_RECO3 -> ../dm-5
lrwxrwxrwx 1 root root 7 Aug 22 15:09 ASM_RECO4 -> ../dm-4
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_RECO5 -> ../dm-19
lrwxrwxrwx 1 root root 7 Aug 22 15:09 ASM_RECO6 -> ../dm-3
lrwxrwxrwx 1 root root 7 Aug 22 15:09 ASM_RECO7 -> ../dm-9
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_RECO8 -> ../dm-20
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_SLOB1 -> ../dm-23
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_SLOB2 -> ../dm-22
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_SLOB3 -> ../dm-25
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_SLOB4 -> ../dm-24
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_SLOB5 -> ../dm-29
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_SLOB6 -> ../dm-28
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_SLOB7 -> ../dm-27
lrwxrwxrwx 1 root root 8 Aug 22 15:09 ASM_SLOB8 -> ../dm-26
lrwxrwxrwx 1 root root 7 Aug 22 15:09 ASM_SYSD1 -> ../dm-6
crw-rw---- 1 root root 10, 236 Aug 22 13:21 control
lrwxrwxrwx 1 root root 7 Aug 22 13:21 vg_oracle631-lv_root -> ../dm-0
lrwxrwxrwx 1 root root 7 Aug 22 13:21 vg_oracle631-lv_swap -> ../dm-1
lrwxrwxrwx 1 root root 7 Aug 22 13:21 vg_u00-lv_oracle -> ../dm-2
[root@oracle631 ~]#
Now the LUNs can be added to ASMLib as shown below.
[root@oracle631 ~]# oracleasm createdisk ASM_SLOB1 /dev/mapper/ASM_SLOB1
Writing disk header: done
Instantiating disk: done
[root@oracle631 ~]# oracleasm createdisk ASM_SLOB2 /dev/mapper/ASM_SLOB2
Writing disk header: done
Instantiating disk: done
[root@oracle631 ~]# oracleasm createdisk ASM_SLOB3 /dev/mapper/ASM_SLOB3
Writing disk header: done
Instantiating disk: done
[root@oracle631 ~]# oracleasm createdisk ASM_SLOB4 /dev/mapper/ASM_SLOB4
Writing disk header: done
Instantiating disk: done
[root@oracle631 ~]# oracleasm createdisk ASM_SLOB5 /dev/mapper/ASM_SLOB5
Writing disk header: done
Instantiating disk: done
[root@oracle631 ~]# oracleasm createdisk ASM_SLOB6 /dev/mapper/ASM_SLOB6
Writing disk header: done
Instantiating disk: done
[root@oracle631 ~]# oracleasm createdisk ASM_SLOB7 /dev/mapper/ASM_SLOB7
Writing disk header: done
Instantiating disk: done
[root@oracle631 ~]# oracleasm createdisk ASM_SLOB8 /dev/mapper/ASM_SLOB8
Writing disk header: done
Instantiating disk: done
[root@oracle631 ~]#
Note that the LUNs can also be created in oracleasm programmatically at the command line as shown below.
[root@oracle632 ~]# for lun in `echo 1 2 3 4 5 6 7 8`; do oracleasm createdisk ASM_SLOB${lun} /dev/mapper/ASM_SLOB${lun}; done
Writing disk header: done
Instantiating disk: done
Writing disk header: done
Instantiating disk: done
Writing disk header: done
Instantiating disk: done
Writing disk header: done
Instantiating disk: done
Writing disk header: done
Instantiating disk: done
Writing disk header: done
Instantiating disk: done
Writing disk header: done
Instantiating disk: done
Writing disk header: done
Instantiating disk: done
[root@oracle632 ~]# oracleasm listdisks | grep SLOB
ASM_SLOB1
ASM_SLOB2
ASM_SLOB3
ASM_SLOB4
ASM_SLOB5
ASM_SLOB6
ASM_SLOB7
ASM_SLOB8
[root@oracle632 ~]#
The ASM diskgroup "SLOB" can now be created as shown below. Run the script while connected as the "grid" linux user.
[grid@oracle631 ~]$ pwd
/home/grid
[grid@oracle631 ~]$ ls -lrt crt_SLOB_ts.sql
-rw-r--r-- 1 grid oinstall 255 Aug 22 15:33 crt_SLOB_ts.sql
[grid@oracle631 ~]$ cat crt_SLOB_ts.sql
CREATE DISKGROUP SLOB
EXTERNAL REDUNDANCY
DISK 'ORCL:ASM_SLOB1','ORCL:ASM_SLOB2','ORCL:ASM_SLOB3','ORCL:ASM_SLOB4',
'ORCL:ASM_SLOB5','ORCL:ASM_SLOB6','ORCL:ASM_SLOB7','ORCL:ASM_SLOB8'
ATTRIBUTE
'compatible.asm' = '11.2',
'compatible.rdbms' = '11.2';
[grid@oracle631 ~]$ sqlplus "/ as sysasm"
SQL*Plus: Release 12.1.0.2.0 Production on Fri Aug 22 15:34:14 2014
Copyright (c) 1982, 2014, Oracle. All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Automatic Storage Management option
SQL> set time on timing on verify on echo on feedback on
15:34:23 SQL> spool crt_SLOB_ts.log
15:34:32 SQL> @crt_SLOB_ts.sql
15:34:39 SQL> CREATE DISKGROUP SLOB
15:34:39 2 EXTERNAL REDUNDANCY
15:34:39 3 DISK 'ORCL:ASM_SLOB1','ORCL:ASM_SLOB2','ORCL:ASM_SLOB3','ORCL:ASM_SLOB4',
15:34:39 4 'ORCL:ASM_SLOB5','ORCL:ASM_SLOB6','ORCL:ASM_SLOB7','ORCL:ASM_SLOB8'
15:34:39 5 ATTRIBUTE
15:34:39 6 'compatible.asm' = '11.2',
15:34:39 7 'compatible.rdbms' = '11.2';
Diskgroup created.
Elapsed: 00:00:07.66
15:34:46 SQL> exit
Disconnected from Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Automatic Storage Management option
[grid@oracle631 ~]$
The diskgroup has been created. Verify diskgroups using "asmcmd" command as shown below.
[grid@oracle631 ~]$ asmcmd
ASMCMD> lsdg
State Type Rebal Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Voting_files Name
MOUNTED EXTERN N 512 4096 1048576 8192 5952 0 5952 0 N DATA/
MOUNTED EXTERN N 512 4096 1048576 8192 8118 0 8118 0 N RECO/
MOUNTED EXTERN N 512 4096 1048576 16384 16318 0 16318 0 N SLOB/
MOUNTED EXTERN N 512 4096 1048576 1024 962 0 962 0 N SYSTEMDG/
ASMCMD>