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тАО08-10-2000 11:47 AM
тАО08-10-2000 11:47 AM
Solved! Go to Solution.
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тАО08-10-2000 11:47 AM
тАО08-10-2000 11:47 AM
Re: Finding alternate paths to disk
This will list the I/O paths to the disks
Brian
<*(((>< er
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тАО08-10-2000 11:58 AM
тАО08-10-2000 11:58 AM
Re: Finding alternate paths to disk
You could running ioscan -fnC disk or you can look at your /etc/lvmtab file, which will also give you the Volume Group to disk configuration.
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тАО08-10-2000 12:47 PM
тАО08-10-2000 12:47 PM
Re: Finding alternate paths to disk
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тАО08-10-2000 12:59 PM
тАО08-10-2000 12:59 PM
Re: Finding alternate paths to disk
disk 27 0/4/0/0.16.2.255.0.0.0 sdisk CLAIMED DEVICE HITACHI DF400F
/dev/dsk/c11t0d0 /dev/rdsk/c11t0d0
disk 33 0/4/0/0.16.3.255.0.0.0 sdisk CLAIMED DEVICE HITACHI DF400F
/dev/dsk/c12t0d0 /dev/rdsk/c12t0d0
disk 39 1/10/0/0.16.2.255.0.0.0 sdisk CLAIMED DEVICE HITACHI DF400F
/dev/dsk/c13t0d0 /dev/rdsk/c13t0d0
disk 45 1/10/0/0.16.3.255.0.0.0 sdisk CLAIMED DEVICE HITACHI DF400F
/dev/dsk/c14t0d0 /dev/rdsk/c14t0d0
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тАО08-10-2000 05:55 PM
тАО08-10-2000 05:55 PM
Re: Finding alternate paths to disk
I also found this DOc when I was looking for a similar thing it has some good pointers..
Document Id UNX1030197
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тАО08-11-2000 01:04 AM
тАО08-11-2000 01:04 AM
Re: Finding alternate paths to disk
you could also use my shell scipt for finding alternate links within LVM.
Regards
Andrew
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тАО08-11-2000 07:58 AM
тАО08-11-2000 07:58 AM
Re: Finding alternate paths to disk
I also have diff. HDS cabs, with not all disks assigned to vgs, and never was bothered by this point of view, because the alternate path were defined when you assigned your LUNs to the different controllers...
And of course I keep a paper copy of the HDS config, else you can use HDS sommet...
Now to see, just use pvdisplay:
# ioscan -funC disk
Class I H/W Path Driver S/W State H/W Type Description
======================================================================
disk 2 8/12.0.0 sdisk CLAIMED DEVICE HITACHI DF400
/dev/dsk/c0t0d0 /dev/rdsk/c0t0d0
disk 3 8/12.1.0 sdisk CLAIMED DEVICE HITACHI DF400
/dev/dsk/c0t1d0 /dev/rdsk/c0t1d0
disk 4 8/12.2.0 sdisk CLAIMED DEVICE HITACHI DF400
/dev/dsk/c0t2d0 /dev/rdsk/c0t2d0
disk 5 8/12.3.0 sdisk CLAIMED DEVICE HITACHI DF400
/dev/dsk/c0t3d0 /dev/rdsk/c0t3d0
disk 6 8/12.4.0 sdisk CLAIMED DEVICE HITACHI DF400
/dev/dsk/c0t4d0 /dev/rdsk/c0t4d0
disk 7 10/0.0.0 sdisk CLAIMED DEVICE HITACHI DF400
/dev/dsk/c1t0d0 /dev/rdsk/c1t0d0
disk 8 10/0.1.0 sdisk CLAIMED DEVICE HITACHI DF400
/dev/dsk/c1t1d0 /dev/rdsk/c1t1d0
disk 9 10/0.2.0 sdisk CLAIMED DEVICE HITACHI DF400
/dev/dsk/c1t2d0 /dev/rdsk/c1t2d0
disk 10 10/0.3.0 sdisk CLAIMED DEVICE HITACHI DF400
/dev/dsk/c1t3d0 /dev/rdsk/c1t3d0
disk 11 10/0.4.0 sdisk CLAIMED DEVICE HITACHI DF400
/dev/dsk/c1t4d0 /dev/rdsk/c1t4d0
disk 0 10/0.6.0 sdisk CLAIMED DEVICE SEAGATE ST39173WC
/dev/dsk/c1t6d0 /dev/rdsk/c1t6d0
disk 1 10/12/5.2.0 sdisk CLAIMED DEVICE TOSHIBA CD-ROM XM-5701TA
/dev/dsk/c2t2d0 /dev/rdsk/c2t2d0
draco # pvdisplay /dev/dsk/c1t2d0
--- Physical volumes ---
PV Name /dev/dsk/c1t2d0
PV Name /dev/dsk/c0t2d0 Alternate Link
VG Name /dev/r5vg01
PV Status available
Allocatable yes
VGDA 2
Cur LV 3
PE Size (Mbytes) 4
Total PE 2842
Free PE 1580
Allocated PE 1262
Stale PE 0
IO Timeout (Seconds) default
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тАО08-11-2000 09:31 AM
тАО08-11-2000 09:31 AM
SolutionI just read your reply again and what you want to know is: Can someone else add a disk he believes not used because he is seeing an alternate link.
When I tried that some time ago, I remembered the system saying the disk is a alternate link thus not allowing you to do so, but this is true with HP-UX im fighting now with an AIX to do the same but with no success...
I suppose I tried also with a disk not beeing used yet, this is another case but I dont remember what happened and I have none available to try (I used to do my test on a DF350) I suppose the system would accept to extend or create a new vg with this disk but will invert the alternate path, I never had trouble with HDS arrays...
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тАО08-11-2000 11:17 AM
тАО08-11-2000 11:17 AM