How to present EMC MirrorView SnapView snapshot devices to a Linux server using Veritas DMP
Article ID: 100037847
Updated On:
Description
Description
This document attempts to explain the devices required to present an EMC MirrorView SnapView snapshot device to a Linux server using Veritas DMP as the multipathing solution.
How to view the EMC CLARiiON devices associated with StorageGroup "vcssx065_066"
Sample output
Note: The IP address for the EMC CLARiiON in this instance is "10.209.64.26"
Daffy # /opt/Navisphere/bin/naviseccli -h 10.209.64.26 storagegroup -list -gname Daffy303_304 -host
Storage Group Name: Daffy303_304
Storage Group UID: 84:43:0F:12:03:14:E0:11:B8:90:00:60:16:0E:E6:04
HBA/SP Pairs:
HBA UID SP Name SPPort
------- ------- ------
20:00:00:E0:8B:1A:AD:B5:21:00:00:E0:8B:1A:AD:B5 SP A 0
Host name: vcslx303.vxindia.veritas.com
20:00:00:E0:8B:1A:AD:B5:21:00:00:E0:8B:1A:AD:B5 SP B 0
Host name: vcslx303.vxindia.veritas.com
HLU/ALU Pairs:
HLU Number ALU Number
---------- ----------
0 281
Shareable: YES
Daffy # ./add.luns
+ /opt/Navisphere/bin/naviseccli -h 10.209.64.26 snapview -startsession VCS_mvsnap_sync_fd_session -lun 281 -persistence -consistent
You must activate a snapshot on this session before you can access it.
+ /opt/Navisphere/bin/naviseccli -h 10.209.64.26 snapview -createsnapshot 281 -snapshotname lun281_fd_snapshot
+ /opt/Navisphere/bin/naviseccli -h 10.209.64.26 snapview -activatesnapshot VCS_mvsnap_sync_fd_session -snapshotname lun281_fd_snapshot
+ /opt/Navisphere/bin/naviseccli -h 10.209.64.26 storagegroup -addsnapshot -gname Daffy303_304 -snapshotname lun281_fd_snapshot
+ /opt/Navisphere/bin/naviseccli -h 10.209.64.26 storagegroup -list -gname Daffy303_304 -host
Storage Group Name: Daffy303_304
Storage Group UID: 84:43:0F:12:03:14:E0:11:B8:90:00:60:16:0E:E6:04
HBA/SP Pairs:
HBA UID SP Name SPPort
------- ------- ------
20:00:00:E0:8B:1A:AD:B5:21:00:00:E0:8B:1A:AD:B5 SP A 0
Host name: vcslx303.vxindia.veritas.com
20:00:00:E0:8B:1A:AD:B5:21:00:00:E0:8B:1A:AD:B5 SP B 0
Host name: vcslx303.vxindia.veritas.com
HLU/ALU Pairs:
HLU Number ALU Number
---------- ----------
0 281
HLU/SLU Pairs:
HLU No. SNAP SHOT UID SNAP SHOT NAME
------ ----------------------------------------------- --------------
1 60:06:01:60:93:00:1B:00:94:D8:85:D0:E3:44:E0:11 lun281_fd_snapshot
Shareable: YES
Display the devices currently discovered by the O/S
Daffy # /usr/bin/lsscsi
[0:0:0:0] disk MAXTOR ATLAS10K5_73SCA JNZM /dev/sda
[0:0:6:0] process PE/PV 1x6 SCSI BP 1.0 -
[2:0:0:0] storage HP HSV200 6110 -
[2:0:0:1] disk HP HSV200 6110 /dev/sdb
[2:0:0:2] disk HP HSV200 6110 /dev/sdc
[2:0:0:3] disk HP HSV200 6110 /dev/sdd
[2:0:0:4] disk HP HSV200 6110 /dev/sde
[2:0:0:5] disk HP HSV200 6110 /dev/sdf
[2:0:0:6] disk HP HSV200 6110 /dev/sdg
[2:0:0:7] disk HP HSV200 6110 /dev/sdh
[2:0:1:0] storage HP HSV200 6110 -
[2:0:1:1] disk HP HSV200 6110 /dev/sdi
[2:0:1:2] disk HP HSV200 6110 /dev/sdj
[2:0:1:3] disk HP HSV200 6110 /dev/sdk
[2:0:1:4] disk HP HSV200 6110 /dev/sdl
[2:0:1:5] disk HP HSV200 6110 /dev/sdm
[2:0:1:6] disk HP HSV200 6110 /dev/sdn
[2:0:1:7] disk HP HSV200 6110 /dev/sdo
[2:0:2:0] disk DGC RAID 5 0326 /dev/sdp
[2:0:3:0] disk DGC RAID 5 0326 /dev/sdq
Rediscover newly presented devices.
Daffy # echo '- - -' > /sys/class/scsi_host/host2/scan
Refresh the O/S device listing
Daffy # /usr/bin/lsscsi
[0:0:0:0] disk MAXTOR ATLAS10K5_73SCA JNZM /dev/sda
[0:0:6:0] process PE/PV 1x6 SCSI BP 1.0 -
[2:0:0:0] storage HP HSV200 6110 -
[2:0:0:1] disk HP HSV200 6110 /dev/sdb
[2:0:0:2] disk HP HSV200 6110 /dev/sdc
[2:0:0:3] disk HP HSV200 6110 /dev/sdd
[2:0:0:4] disk HP HSV200 6110 /dev/sde
[2:0:0:5] disk HP HSV200 6110 /dev/sdf
[2:0:0:6] disk HP HSV200 6110 /dev/sdg
[2:0:0:7] disk HP HSV200 6110 /dev/sdh
[2:0:1:0] storage HP HSV200 6110 -
[2:0:1:1] disk HP HSV200 6110 /dev/sdi
[2:0:1:2] disk HP HSV200 6110 /dev/sdj
[2:0:1:3] disk HP HSV200 6110 /dev/sdk
[2:0:1:4] disk HP HSV200 6110 /dev/sdl
[2:0:1:5] disk HP HSV200 6110 /dev/sdm
[2:0:1:6] disk HP HSV200 6110 /dev/sdn
[2:0:1:7] disk HP HSV200 6110 /dev/sdo
[2:0:2:0] disk DGC RAID 5 0326 /dev/sdp
[2:0:2:1] disk DGC RAID 5 0326 -
[2:0:3:0] disk DGC RAID 5 0326 /dev/sdq
[2:0:3:1] disk DGC RAID 5 0326 -
Refresh VxVM
Daffy # vxdisk scandisks
Refresh the contents of the /etc/vx/disk.info file
Daffy # vxddladm assign names
Display the devices presented to VxVM
Daffy # vxdisk -x UDID -x LUN_SERIAL_NO -p list | grep DGC
emc_clariion0_281 DGC%5FRAID%205%5FCK200065000220%5F6006016093001B002AD4B6D9FD13E011 6006016093001B002AD4B6D9FD13E011
emc_clariion0_281_1 DGC%5FRAID%205%5FCK200065000220%5F6006016093001B0094D885D0E344E011 6006016093001B0094D885D0E344E011
Daffy # /opt/Navisphere/bin/naviseccli -h 10.209.64.26 storagegroup -list -gname Daffy303_304 -host | grep ":"
Storage Group Name: Daffy303_304
Storage Group UID: 84:43:0F:12:03:14:E0:11:B8:90:00:60:16:0E:E6:04
HBA/SP Pairs:
20:00:00:E0:8B:1A:AD:B5:21:00:00:E0:8B:1A:AD:B5 SP A 0
Host name: vcslx303.vxindia.veritas.com
20:00:00:E0:8B:1A:AD:B5:21:00:00:E0:8B:1A:AD:B5 SP B 0
Host name: vcslx303.vxindia.veritas.com
HLU/ALU Pairs:
HLU/SLU Pairs:
1 60:06:01:60:93:00:1B:00:94:D8:85:D0:E3:44:E0:11 lun281_fd_snapshot
Shareable: YES
Daffy # vxdisk -eo alldgs list
DEVICE TYPE DISK GROUP STATUS OS_NATIVE_NAME ATTR
emc_clariion0_281 auto:cdsdisk - (dg2) online sdq lun RAID_5
emc_clariion0_281_1 auto:cdsdisk - (dg2) online udid_mismatch sds lun RAID_5 <<< EMC MirrorView SnapView snapshot lun
eva4k6k0_0 auto:cdsdisk - (OracleDG) online sdb -
eva4k6k0_1 auto:cdsdisk - (OracleDG) online sdj -
eva4k6k0_2 auto:cdsdisk - (WebSphereDG) online sdk -
eva4k6k0_3 auto:cdsdisk - (WebSphereDG) online sdl -
eva4k6k0_4 auto:cdsdisk - - online sdm -
eva4k6k0_5 auto:cdsdisk DISK00 EVACA0 online sdn -
eva4k6k0_6 auto - - error sdo -
sda auto:none - - online invalid sda -
How to import the EMC MirrorView SnapView Snapshot lun using VxVM tags
Daffy # vxdisk settag emc_clariion0_281_1 snap_dg2
Daffy # vxdisk listtag
DEVICE NAME VALUE
emc_clariion0_281_1 snap_dg2 -
Daffy # vxdg -Cfn snap_dg2 -o useclonedev=on -o updateid -o tag=snap_dg2 import dg2
Daffy # vxdisk -eo alldgs list
DEVICE TYPE DISK GROUP STATUS OS_NATIVE_NAME ATTR
emc_clariion0_281 auto:cdsdisk - (dg2) online sdq lun RAID_5
emc_clariion0_281_1 auto:cdsdisk emc_clariion0_296 snap_dg2 online clone_disk sds lun RAID_5 <<< EMC MirrorView SnapView snapshot lun
eva4k6k0_0 auto:cdsdisk - (OracleDG) online sdb -
eva4k6k0_1 auto:cdsdisk - (OracleDG) online sdj -
eva4k6k0_2 auto:cdsdisk - (WebSphereDG) online sdk -
eva4k6k0_3 auto:cdsdisk - (WebSphereDG) online sdl -
eva4k6k0_4 auto:cdsdisk - - online sdm -
eva4k6k0_5 auto:cdsdisk DISK00 EVACA0 online sdn -
eva4k6k0_6 auto - - error sdo -
sda auto:none - - online invalid sda -
With VxVM 5.1 SP1 the VxVM volumes will be started automatically.
Daffy # rpm -qa VRTSvxvm
VRTSvxvm-5.1.100.000-SP1_RHEL5
Daffy # vxprint -qhtg snap_dg2
dg snap_dg2 default default 45000 1299101939.20.vcslx303.vxindia.veritas.com
dm emc_clariion0_296 emc_clariion0_281_1 auto 65536 134912 -
v vol1 - ENABLED ACTIVE 102400 SELECT - fsgen
pl vol1-01 vol1 ENABLED ACTIVE 102400 CONCAT - RW
sd emc_clariion0_296-01 vol1-01 emc_clariion0_296 0 102400 0 emc_clariion0_281_1 ENA
The VxVM tunable "autostartvolumes" controls this behaviour.
Daffy # vxdefault list
KEYWORD CURRENT-VALUE DEFAULT-VALUE
autostartvolumes on on <<<<<
fssmartmovethreshold 100 100
reclaim_on_delete_start_time 22:10 22:10
reclaim_on_delete_wait_period 1 1
sharedminorstart 33000 33000
usefssmartmove all all
Daffy # mount -t vxfs /dev/vx/dsk/snap_dg2/vol1 /snap_vol1
UX:vxfs mount.vxfs: ERROR: V-3-21251: /snap_vol1 does not exist
Daffy # mkdir /snap_vol1
Daffy # mount -t vxfs /dev/vx/dsk/snap_dg2/vol1 /snap_vol1
Process complete
Issue/Introduction
