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тАО06-16-2009 06:27 AM
тАО06-16-2009 06:27 AM
cciss messages in dmesg
could someone explain me the following cciss messages which I saw recently in dmesg?
Red Hat Enterprise Linux ES release 4 (Nahant Update 8)
dmesg output (partly):
HP CISS Driver (v 2.6.20.RH1)
cciss: Device 0x46 has been found at bus 4 dev 3 func 0
ACPI: PCI Interrupt 0000:04:03.0[A] -> GSI 51 (level, low) -> IRQ 217
cciss: using DAC cycles
blocks= 142253279 block_size= 512
heads= 255, sectors= 32, cylinders= 17433
blocks= 573480303 block_size= 512
heads= 255, sectors= 32, cylinders= 70280
blocks= 142253279 block_size= 512
heads= 255, sectors= 32, cylinders= 17433
cciss/c0d0: p1 p2
blocks= 573480303 block_size= 512
heads= 255, sectors= 32, cylinders= 70280
cciss/c0d1:
blocks= 573480303 block_size= 512
heads= 255, sectors= 32, cylinders= 70280
blocks= 573480303 block_size= 512
heads= 255, sectors= 32, cylinders= 70280
cciss/c0d1:
blocks= 573480303 block_size= 512
heads= 255, sectors= 32, cylinders= 70280
blocks= 573480303 block_size= 512
heads= 255, sectors= 32, cylinders= 70280
cciss/c0d1:
blocks= 573480303 block_size= 512
heads= 255, sectors= 32, cylinders= 70280
blocks= 573480303 block_size= 512
heads= 255, sectors= 32, cylinders= 70280
cciss/c0d1:
blocks= 573480303 block_size= 512
heads= 255, sectors= 32, cylinders= 70280
blocks= 573480303 block_size= 512
heads= 255, sectors= 32, cylinders= 70280
cciss/c0d1:
blocks= 573480303 block_size= 512
heads= 255, sectors= 32, cylinders= 70280
blocks= 573480303 block_size= 512
heads= 255, sectors= 32, cylinders= 70280
.
.
.
I can't find information what these messages mean. Any info on that? where to look after?
Many thanks in advance
Regards
Markus
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тАО06-16-2009 06:45 AM
тАО06-16-2009 06:45 AM
Re: cciss messages in dmesg
Disks have been detected, probably due to RH's built in multi-pathing capabilities.
Notice they are all the same size.
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тАО06-16-2009 06:52 AM
тАО06-16-2009 06:52 AM
Re: cciss messages in dmesg
Thanks for your reply.
I recognised too that the disks are all of the same size, in fact it's always the same disk.
It's always cciss/c0d1. Why? I saw ~180 exactly the same entries for cciss/c0d1 in dmesg.
Thanks and regards
Markus
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тАО06-16-2009 07:17 AM
тАО06-16-2009 07:17 AM
Re: cciss messages in dmesg
This can't be multipathing with cciss. It an internal RAID controller and only presents disks down one path. The messages are all related to the same device cciss/c0d1, and for the most part the same block number on that device. Maybe it's detected a bad block on the disk and is attempting to mapping it out and replace it with another?
I'm afraid I have no idea what these messages mean otherwise. Have you installed the Proliant Support Pack for your system. HP's diagnostic tools might throw more light on this for you.
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тАО06-16-2009 03:20 PM
тАО06-16-2009 03:20 PM
Re: cciss messages in dmesg
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тАО06-25-2009 11:58 PM
тАО06-25-2009 11:58 PM