Some storage/disks have been added to an existing AIX 6.1 server. The admin sent me the list of hdisk#'s for the new disks, but I need the corresponding rhdisk# for the same hdisk. (I know from past experience that the rhdisk that maps to an hdisk is not always the same number. For instance, there is an hdisk14 and an rhdisk14, but they are not the same).
I am installing Oracle Grid software and it requires the specific rhdisk#'s in order to create the disk groups.
You might find what you want with a combination of lscfg -vl hdisk14 & lsattr -El hdisk14 and comparing them to the output for the rhdisk device. There will be a serial number to confirm which it is, but sadly I do not have access to any AIX servers any more.
Can you post some output? I think the value you want from lscfg will be marked as Z1, but it's only a vague memory.
I hope that this helps,
Robin
Thanks for the reply Robin. I get plenty of output when I run the commands for hdisk14 but none for rhdisk14.
hostname[]:/dev> ls -l *disk14
brw------- 1 oracle dba 13, 13 Sep 21 14:24 hdisk14
crw------- 1 oracle dba 13, 13 Sep 21 14:24 rhdisk14
hostname[]:/dev> lscfg -vl hdisk14
hdisk14 U8408.E8E.215A4DW-V9-C25-T1-W500507680110C327-LC000000000000 MPIO FC 2145
Manufacturer................IBM
Machine Type and Model......2145
ROS Level and ID............0000
Device Specific.(Z0)........0000063268181002
Device Specific.(Z1)........0200602
Serial Number...............60050768018085F2880000000000098F
hostname[]:/dev> lsattr -El hdisk14
PCM PCM/friend/sddpcm PCM True
PR_key_value none Reserve Key True
algorithm load_balance Algorithm True
clr_q no Device CLEARS its Queue on error True
dist_err_pcnt 0 Distributed Error Percentage True
dist_tw_width 50 Distributed Error Sample Time True
flashcpy_tgtvol no Flashcopy Target Lun False
hcheck_interval 60 Health Check Interval True
hcheck_mode nonactive Health Check Mode True
location Location Label True
lun_id 0xc000000000000 Logical Unit Number ID False
lun_reset_spt yes Support SCSI LUN reset True
max_coalesce 0x40000 Maximum COALESCE size True
max_transfer 0x40000 Maximum TRANSFER Size True
node_name 0x500507680100c327 FC Node Name False
pvid none Physical volume identifier False
q_err yes Use QERR bit True
q_type simple Queuing TYPE True
qfull_dly 2 delay in seconds for SCSI TASK SET FULL True
queue_depth 20 Queue DEPTH True
recoverDEDpath no Recover DED Failed Path True
reserve_policy no_reserve Reserve Policy True
retry_timeout 120 Retry Timeout True
rw_timeout 60 READ/WRITE time out value True
scbsy_dly 20 delay in seconds for SCSI BUSY True
scsi_id 0x26c00 SCSI ID False
start_timeout 180 START unit time out value True
timeout_policy fail_path Timeout Policy True
unique_id 3321360050768018085F2880000000000098F04214503IBMfcp Device Unique Identification False
ww_name 0x500507680110c327 FC World Wide Name False
hostname[]:/dev> lscfg -vl rhdisk14
lscfg: device rhdisk14 not found.
hostname[]:/dev> lsattr -El rhdisk14
lsattr: 0514-519 The following device was not found in the customized
device configuration database:
rhdisk14
Then you also have the directory listing that you show us above. The device major & minor node match in your display (major=13, minor=13) and these should be unique to your device.
Have you got a longer listing of /dev/*hdisk* that we can work through?
Robin
I think it is much easier than that: simply compare the major and minor numbers, because these will match for device files pointing to the same (quasi-physical) device.
I hope this helps.
bakunin
Check for the "rdisk" with same "Major, Minor" number in "/dev" directory using "ls -l
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