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Internal LUN, device recognized by the host
To verify the correspondence of the internal LU number in the array and the
device name recognized by the host, use the inqraid command tool or the
raidscan command. The following example illustrates using the inqraid
command tool in the HP-UX system.
•
# ls /dev/rdsk/* | ./inqraid –find
Group PairVol (L/R) (Port#,TID,LU-M), Seq#,LDEV#, P/S, Status, Seq#, P-LDEV# M
horcl dev00(L)
->/dev/rdsk/c23t0d0
Group PairVol (L/R) (Port#,TID,LU-M), Seq#,LDEV#, P/S, Status, Seq#, P-LDEV# M
horcl dev10(L)
-> Hraddisk3
The device name recognized
by the host.
Figure 2-7: Correspondence between Internal LU and Device
For details on the inqraid command tool, refer to
page
1-85. For details on raidscan command, refer to
on page
Pair-splitting guidelines
When the host cannot recognize an LU while the protection function is ON,
the following message is displayed and operations to the pair of the
unrecognized LU cannot be performed.
[EX_ENPERM] Permission denied with the LDEV
Figure 2-8: Message Displayed when Host Cannot Recognize an LU
Issue the pairdisplay command and verify the pair status. An example is
shown below.
•
C:\horcm\etc>pairdisplay –g vg01 -fc
Group
PairVol (L/R) (Port#,TID, LU-M) ,Seq#,LDEV#.P/S,Status, % ,P-LDEV# M
vg01
oradb1(L)
vg01
oradb1(R)
vg01
oradb2(L)
vg01
oradb2(R)
vg01
oradb3(L)
vg01
oradb3(R)
After the pair status is verified, turn the protection function OFF, restart
HORCM, and then split the pair (to turn the protection function OFF, delete
the environment variable $HORCMPROMOD). For details on the
environment variable, see
2–32
Hitachi AMS 2000 Family Command Control Interface (CCI) Reference Guide
(CL2-A, 0, 0-0) 85006145
(CL2-A, 2, 3-0) 85006145
The port number, target ID, LU number, and MU number
registered in the configuration definition file.
Recognized by Host
1-51.
(CL1-A , 1, 1-0 )85009876
(CL1-A , 1, 2-0 )85009876 ****. ---- ----,----- ---- -
(CL1-A , 1, 3-0 )85009876
(CL1-A , 1, 4-0 )85009876 ****. ---- ----,----- ---- -
(CL1-A , 1, 5-0 )85009876
(CL1-A , 1, 6-0 )85009876 ****. ---- ----,----- ---- -
Figure 2-9: Pair Status Verification
Environment variables, on page
Troubleshooting
0
S-VOL
SSUS, -----
3
S-VOL
SSUS, -----
The internal LU number in the AMS
array.
Inqraid command tool, on
Raidscan command,
1. P-VOL PSUE,
0
2 -
3. P-VOL PSUE,
0
2 -
5. P-VOL PSUE,
0
2 -
LUs not recognized by the host.
1-3.
9
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6
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Troubleshooting
