Today i have faced this issue, i hope it will help you to resolve incorrect LUN size issue.
You created a logical drive of capacity x GB, and mapped it so there is a LUN (Logical Unit Number) with size x GB. When you run format command, Solaris shows incorrect size for the logical drive.
eg.,
Partition table showing only 500 GB, where it is supposed to show 816 GB.
partition> pCurrent partition table (original):Total disk cylinders available: 53233 + 2 (reserved cylinders) Part Tag Flag Cylinders Size Blocks 0 root wm 0 - 16 135.88MB (17/0/0) 274193 1 swap wu 17 - 33 135.88MB (17/0/0) 274193 2 backup wu 0 - 53232 500.41GB (53233/0/0) 858595057 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 usr wm 34 - 53232 500.15GB (53199/0/0) 858046671 7 unassigned wm 0 0 (0/0/0) 0
It could be a Solaris bug. However the following steps may fix the issue and show the real size of the LUN.
Note:
I’m no storage expert – just outlining the steps that helped me resolving the issue. May be there are better/simpler ways to resolve this issue which I do not know yet.
Steps:
Run the following commands as root user:
# touch /reconfigure# reboot
# format
Select the disk and check the partition table. Do you see the configured size? If yes, you are done – stop here. If not, go to the next step.
eg., continued ..
# formatSearching for disks...done AVAILABLE DISK SELECTIONS: 0. c1t0d0 /pci@7c0/pci@0/pci@1/pci@0,2/LSILogic,sas@2/sd@0,0 1. c1t1d0 /pci@7c0/pci@0/pci@1/pci@0,2/LSILogic,sas@2/sd@1,0 2. c0t40d0 <SUN-StorEdge3510-415I cyl 65533 alt 2 hd 64 sec 408> /pci@7c0/pci@0/pci@1/pci@0,2/SUNW,qlc@1/fp@0,0/ssd@w216000c0ffd7e5fb,0 3. c2t216000C0FFD7E5FBd1 <SUN-StorEdge3510-415I cyl 47588 alt 2 hd 64 sec 255> /pci@7c0/pci@0/pci@1/pci@0,2/SUNW,qlc@1/fp@0,0/ssd@w216000c0ffd7e5fb,1 Specify disk (enter its number): 2selecting c0t40d0[disk formatted]Warning: Current Disk has mounted partitions. FORMAT MENU: disk - select a disk type - select (define) a disk type partition - select (define) a partition table current - describe the current disk format - format and analyze the disk repair - repair a defective sector label - write label to the disk analyze - surface analysis defect - defect list management backup - search for backup labels verify - read and display labels save - save new disk/partition definitions inquiry - show vendor, product and revision volname - set 8-character volume name ! - execute , then return quit format> p PARTITION MENU: 0 - change `0' partition 1 - change `1' partition 2 - change `2' partition 3 - change `3' partition 4 - change `4' partition 5 - change `5' partition 6 - change `6' partition 7 - change `7' partition select - select a predefined table modify - modify a predefined partition table name - name the current table print - display the current table label - write partition map and label to the disk ! - execute , then return quit partition> pCurrent partition table (original):Total disk cylinders available: 53233 + 2 (reserved cylinders) Part Tag Flag Cylinders Size Blocks 0 root wm 0 - 16 135.88MB (17/0/0) 274193 1 swap wu 17 - 33 135.88MB (17/0/0) 274193 2 backup wu 0 - 53232 500.41GB (53233/0/0) 858595057 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 usr wm 34 - 53232 500.15GB (53199/0/0) 858046671 7 unassigned wm 0 0 (0/0/0) 0
In this example the issue wasn’t resolved just by rebooting the server with /reconfigure file in root file system.
Now go back one level by quitting the partition table screen; and then type in the word ‘type‘. When you are shown the available drive types, select ‘0. Auto configure‘ option by typing 0. Usually this step would fix the issue and show the right LUN size. Just label the disk by selecting ‘label‘ option and verify the partition table one more time to see if it is showing the right size.
eg., continued ..
partition> q format> type AVAILABLE DRIVE TYPES: 0. Auto configure 1. Quantum ProDrive 80S 2. Quantum ProDrive 105S 3. CDC Wren IV 94171-344 4. SUN0104 5. SUN0207 6. SUN0327 7. SUN0340 8. SUN0424 9. SUN0535 10. SUN0669 11. SUN1.0G 12. SUN1.05 13. SUN1.3G 14. SUN2.1G 15. SUN2.9G 16. Zip 100 17. Zip 250 18. Peerless 10GB 19. SUN72G 20. SUN-StorEdge3510-415I 21. SUN-StorEdge3510-415I 22. SUN-StorEdge3510-415I 23. other Specify disk type (enter its number)[21]: 0c0t40d0: configured with capacity of 815.96GB<SUN-StorEdge3510-415I cyl 65533 alt 2 hd 64 sec 408>selecting c0t40d0[disk formatted] format> currentCurrent Disk = c0t40d0<SUN-StorEdge3510-415I cyl 65533 alt 2 hd 64 sec 408>/pci@7c0/pci@0/pci@1/pci@0,2/SUNW,qlc@1/fp@0,0/ssd@w216000c0ffd7e5fb,0 format> labelReady to label disk, continue? y format> p PARTITION MENU: 0 - change `0' partition 1 - change `1' partition 2 - change `2' partition 3 - change `3' partition 4 - change `4' partition 5 - change `5' partition 6 - change `6' partition 7 - change `7' partition select - select a predefined table modify - modify a predefined partition table name - name the current table print - display the current table label - write partition map and label to the disk ! - execute , then return quit partition> pCurrent partition table (default):Total disk cylinders available: 65533 + 2 (reserved cylinders) Part Tag Flag Cylinders Size Blocks 0 root wm 0 - 10 140.25MB (11/0/0) 287232 1 swap wu 11 - 21 140.25MB (11/0/0) 287232 2 backup wu 0 - 65532 815.96GB (65533/0/0) 1711197696 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 usr wm 22 - 65532 815.69GB (65511/0/0) 1710623232 7 unassigned wm 0 0 (0/0/0) 0 partition> q
In this particular example, we can see that the issue is resolved.
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