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12-08-2011 10:23 PM
12-08-2011 10:23 PM
Dear Mr. Torsten,
I would like to thank you for your effort which you put for giving an excellent reply to one of the post which was submitted on 07-25-2008 11:50 AM. Your reply to that post was really really highly appreciated, as am a newbie in this environment was desperately looking for the solution for the same problem of hard disk failure which i faced in my company.
FYI, I run the below commands to get the required output. Find attached the file with the complete output of SAUTIL
# sautil /dev/ciss3
---- LOGICAL DRIVE SUMMARY ---------------------------------------------------
# RAID Size Status
0 5 279960 MB USING INTERIM RECOVERY MODE
---- SAS/SATA DEVICE SUMMARY -------------------------------------------------
Location Ct Enc Bay WWID Type Capacity Status
internal 2I 1 8 0x5000c500235b5741 DISK 146.8 GB OK
N/A 2I 1 7 0x5000c500235e0625 N/A N/A
internal 2I 1 6 0x5000c500235de691 DISK 146.8 GB OK
internal 2I 1 5 0x5000c500235de8c1 DISK 146.8 GB UNASSIGNED
******************************************************************************
From the output of SAUTIL, it clearly shows that the disk got failed on this we opened the request with hp-support on which we received a new peice of hd.
We replaced the old hd with the new one after that i got the below message from the output of SAUTIL
---- LOGICAL DRIVE SUMMARY ---------------------------------------------------
# RAID Size Status
0 5 279960 MB OK
---- SAS/SATA DEVICE SUMMARY -------------------------------------------------
Location Ct Enc Bay WWID Type Capacity Status
internal 2I 1 8 0x5000c500235b5741 DISK 146.8 GB OK
internal 2I 1 7 0x5000c5003c4d8e45 DISK 146.8 GB OK
internal 2I 1 6 0x5000c500235de691 DISK 146.8 GB OK
internal 2I 1 5 0x5000c500235de8c1 DISK 146.8 GB UNASSIGNED
Ok, as am a newbie i need some clarifcation from the above procedure of replacing the hd on failure. Will the server needs to be restart on replacing the hd? And also as you can see that one of the disk status is UNASSIGNED instead of SPARE on this i need your valuable advice and assistance. Will be really grateful if you could please let me know the process to make that disk to be get used autoatically in such a way that if incase one of the disk fails the spared one should immediatly get active.
Thanks & Best Regards
Syed
Solved! Go to Solution.
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12-09-2011 02:33 AM
12-09-2011 02:33 AM
SolutionHi,
this smartarray controller is the same as used in Proliant servers and works similar.
You can just replace a failed, disk, the controller will sync this disk.
For the UNASSIGNED drive:
This doesn't belong to a logical drive and isn't a spare.
To add as spare, do this (example):
Adding a Spare Disk Drive
# saconfig /dev/cissX -A <Logical drive #> -s
<Channel:Target> command is used to add a spare physical disk to an existing
logical drive:
# saconfig /dev/ciss7 -A 0 -s 1:3
Spare drive 1:3 added to Logical drive 0
You can add multiple spare physical disks to a logical drive, depending on the
number of physical disks in the array that are not in use.
In your case the logical drive is "0", disk is 2I:1:5 and controller is /dev/ciss0
Hope this helps!
Regards
Torsten.
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12-09-2011 02:41 AM
12-09-2011 02:41 AM
Re: HP-Unix 11.31 Hard Disk Failure
Hi,
From the post I see that the 4th physical disk is in "Unassigned" state and would like to make it as SPARE.
internal 2I 1 5 0x5000c500235de8c1 DISK 146.8 GB UNASSIGNED
Analyzed your SAUTIL_Output.txt file and following are my observations
-> 1 Logical drive configured (/dev/dsk/c0t0d0) with first 3 physical disks participation.
-> the 4 disk (0x5000c500235de8c1) is not a part of any logical drive and hence its in UNASSIGNED state.
So if you would like to configure the 4 disk as SPARE disk, you would need to configure it manually.
To add spare drive to existing logical drive, use the below command syntax.
# saconfig /dev/cissX -A <Logical drive #> -s <Channel:Target>
# sautil /dev/cissX --> check if the disk is added as spare to the logical drive.
Pradeep
I am an HP Employee
A quick resolution to technical issues for your HP Enterprise products is just a click away HP Support Center Knowledge-base
See Self Help Post for more details
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12-09-2011 11:33 PM
12-09-2011 11:33 PM
Re: HP-Unix 11.31 Hard Disk Failure
Hey Torsten,
I'm extremely grateful for you for answering my questions so promptly, thanks a lot. It worked smoothely.
Have configured the disk as SPARE successfully.
mcmsdbl2#saconfig /dev/ciss0
******************** SmartArray RAID Controller /dev/ciss0 ********************
Auto-Fail Missing Disks at Boot = disabled
Cache Configuration Status = cache enabled
Cache Ratio = 25% Read / 75% Write
---------- PHYSICAL DRIVES ----------
Location Ct Enc Bay WWID Size Status
Internal 2I 1 8 0x5000c500235b5741 146.8 GB OK
Internal 2I 1 7 0x5000c5003c4d8e45 146.8 GB OK
Internal 2I 1 6 0x5000c500235de691 146.8 GB OK
Internal 2I 1 5 0x5000c500235de8c1 146.8 GB SPARE
---------- LOGICAL DRIVE 0 ----------
Device File = c0t0d0
RAID Level = 5
Size = 279960 MB
Stripe Size = 64 KB
Status = OK
Participating Physical Drive(s):
Ct Enc Bay WWID
2I 1 8 0x5000c500235b5741
2I 1 7 0x5000c5003c4d8e45
2I 1 6 0x5000c500235de691
Participating Spare Drive(s):
Ct Enc Bay WWID
2I 1 5 0x5000c500235de8c1
Thanks once again.
Regards
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12-09-2011 11:37 PM
12-09-2011 11:37 PM
Re: HP-Unix 11.31 Hard Disk Failure
Hey Pradeep,
Thank you very much for taking the time to reply to me. I really appreciate it and your response was really very helpful for me to get rid out from those configuring queries very easily that too in a very grate understandable manner.
Thanks.
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12-10-2011 04:44 AM
12-10-2011 04:44 AM
Re: HP-Unix 11.31 Hard Disk Failure
Dear Torsten,
I will be really thankful if you could please let me know what exactly the difference between the below two results which appears after giving these two commands ( bdf and sautil /dev/ciss0 -s)
mcmsdbl1# bdf
Filesystem kbytes used avail %used Mounted on
/dev/vg00/lvol3 1048576 267776 774792 26% /
/dev/vg00/lvol1 1835008 342792 1480632 19% /stand
/dev/vg00/lvol8 8912896 5815416 3076496 65% /var
/dev/vg00/lvol7 5963776 3024968 2915896 51% /usr
/dev/vg00/lvo19 62914560 29124241 31678431 48% /u01
/dev/vg00/lvol4 524288 26984 494568 5% /tmp
/dev/vg00/lvol6 9043968 6929576 2097992 77% /opt
/dev/vg00/lvol5 131072 5432 124664 4% /home
/dev/vg00/lvo20 62914560 82195 58905477 0% /backup
mcmsdbl1# sautil /dev/ciss0 -s
---- LOGICAL DRIVE SUMMARY ---------------------------------------------------
# RAID Size Status
0 5 279960 MB OK
---- SAS/SATA DEVICE SUMMARY -------------------------------------------------
Location Ct Enc Bay WWID Type Capacity Status
internal 2I 1 8 0x5000c500235b646d DISK 146.8 GB OK
internal 2I 1 7 0x5000c500235df251 DISK 146.8 GB OK
internal 2I 1 6 0x5000c500235e1449 DISK 146.8 GB OK
internal 2I 1 5 0x5000c500235d1425 DISK 146.8 GB SPARE
Whats the relation between those slices and physical disks and what kind of information resides on those above disk's, will it needs to be backed up? how i can come to know the usage of those disks?
Thanks & Regards
Syed
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12-12-2011 01:25 AM
12-12-2011 01:25 AM
Re: HP-Unix 11.31 Hard Disk Failure
Hi Syed,
The sautil command provides detailed information about the Smart Array controller hardware RAID configuration, any logical drives that have been configured, and all SCSI devices that are attached to the controller.
sautil -s option provides a shorter and less detailed output.
In your case you have 4 internal physical disks and created a Logical drive 0 (/dev/dsk/c0t0d0) with RAID 5 configuration. This logical drive 0 (/dev/dsk/c0t0d0) is presented as a HP-UX Boot disk.
The bdf command displays the amount of free disk space available on the file systems in the Boot disk (/dev/dsk/c0t0d0).
You can always take a backup of HP-UX boot disk using Ignite-UX utility.
The same data residing in the boot disk is distributed across the physical disks as per the RAID configuration.
Pradeep
I am an HP Employee
A quick resolution to technical issues for your HP Enterprise products is just a click away HP Support Center Knowledge-base
See Self Help Post for more details