Pd Suggested Action 6; Pdch; Format Of Possible Pdch Exception Messages; Pdch Example 1 - HP 3PAR StoreServ 7000 Troubleshooting Manual

pd Suggested Action 6

Check the release notes for mandatory updates and patches to the HP 3PAR OS version that is
installed and install as needed to support this PD in this cage.

pdch

Displays chunklets state issues
Checks LD connection paths, remote chunklets, and remote disks

Format of Possible pdch Exception Messages

pdch LD:<ldid> "Connection path is not the same as LD ownership"
pdch ch:<initpdid>:<initpdpos> "Chunklet is on a remote disk"
pdch LD:<ldid> "LD has <count> remote chunklets"

pdch Example 1

Component ------------Summary Description------------
pdch LDs wwith connection path different than ownership
Component -Identifier- -------Detailed Description--------
pdch

pdch Suggested Action 1

Use the CLI showld, showpd, and shownode commands. If the ownership issue is not created
due to a node missing or failed PD, Contact HP support to request support for moving the LDs to
the desired location for your system. See
cli% showld
Id Name
19 pdsld0.0
20 pdsld0.1
21 pdsld0.2

pdch Example 2

Component -------------------Summary Description------------------- Qty
pdch LDs with connection path different than ownership
pdch LDs with chunklets on a remote disk
Component -Identifier- ---------------Detailed Description--------------
pdch LD:35
pdch ld:35

pdch Suggested Action 2

The primary I/O paths for drives are balanced between the two nodes that are physically connected
to the drive cage. The node that normally has the primary path to a drive is considered the owning
node. If the secondary node's path has to be used for I/O to the drive, that is considered remote
I/O.
These messages usually indicate a node-to-cage FC path problem because the drives (chunklets)
are being accessed through their secondary path. These are usually a by product of other conditions
such as drive-cage/node-port/FC-loop problems; focus on troubleshooting those. If a node is offline
58 Troubleshooting
ld:tp-0-sd-0.1 Connection path is not the same as LD ownership
RAID -Detailed_State- Own SizeMB UsedMB Use Lgct LgId WThru MapV
1 normal
1 normal
1 normal
Connection path is not the same as LD ownership
LD has 1 remote chunklet
"Contacting HP Support about System Setup" (page
1/0 256 0 P,F
1/0 7680 0 P
1/0 256 0 P
Qty
1
0 --- Y N
0 --- Y N
0 --- Y N
23
18
73).