topic Re: What does s1 means on c4t0d4s1 in Operating System - HP-UX

What does s1 means on c4t0d4s1

Ranjith M — Wed, 25 Nov 2009 07:46:21 GMT

Hi All,

I have presented a lun from storage with the lun address "0D" on the Ioscan output the lun is showing as /dev/dsk/c4t0d4s1
There is also another lun which is showing as /dev/dsk/c4t0d4

Another lun was added with the address "05" this is correctly showing on the ctd as /dev/dsk/c4t0d5.

Please let me know what does s1 means

isocan -func output :

==
disk 31 0/4/1/0.3.2.255.0.0.4 sdisk CLAIMED DEVICE E MC SYMMETRIX
/dev/dsk/c4t0d4 /dev/rdsk/c4t0d4
/dev/dsk/c4t0d4s1 /dev/rdsk/c4t0d4s1
disk 32 0/4/1/0.3.2.255.0.0.5 sdisk CLAIMED DEVICE E MC SYMMETRIX
/dev/dsk/c4t0d5 /dev/rdsk/c4t0d5
==

Thanks

Ranjith

Re: What does s1 means on c4t0d4s1

Torsten. — Wed, 25 Nov 2009 07:56:10 GMT

this is a "slice" (partition), normally used for integrity boot disks only.

Re: What does s1 means on c4t0d4s1

Johnson Punniyalingam — Wed, 25 Nov 2009 08:47:02 GMT

c#t#d#s#

c = controllert = targetd = disks = slice

Re: What does s1 means on c4t0d4s1

Ranjith M — Wed, 25 Nov 2009 08:54:15 GMT

This is not a boot disk. I just created a device with the LUN address 0D and masked it to host. After masking this, is showing as s1

Before masking this device the disk visible to host was

/dev/dsk/c4t0d4 /dev/rdsk/c4t0d4

after the new device with address "0D" was added its showing as slice under above ctd

Thanks

Ranjith

Re: What does s1 means on c4t0d4s1

Bruce Hoffmann_1 — Wed, 25 Nov 2009 14:42:49 GMT

Have you checked the partition table on the device? This is done using the idisk command with -p option on the raw device (/dev/rdsk/c4t0d5). The output may help explain things.

FYI,

Bruce