Re: [lkdump-develop] "cat /proc/diskdump" command does not showregistered device

[Takao I. <ind...@jp...>]

Hi,

On Sun, 6 May 2007 10:16:42 +0100 (BST), rahul Katariya wrote:

>I am working on 64 bit redhat AS 4 update 3.  I installed diskdumputils-1.2.8
> package on my machine.
>   
>  I configured diskdump on my machine. 
>  ================================================
>  $ cat /etc/sysconfig/diskdump
>DEVICE=/dev/sdam2
>   
>  I executed folowing commands
>================================================
>  $ service diskdump initialformat
>Formatting dump device:
>Do you want to format /dev/sdam2 (yes/NO)? yes
>/dev/sdam2: [100.0%]
>
>  $ service diskdump start
>Starting diskdump:                                                           
> [  OK  ]
>
>   
>  $ dmesg -c
>disk_dump: Maximum block size: 16384
>disk_dump: total blocks required: 1048433 (header 3 + bitmap 38 + memory 
>1048392)
>
>  $ tail -f /var/log/messages
>May  6 14:31:14  kernel: disk_dump: Maximum block size: 16384
>May  6 14:31:14  kernel: disk_dump: total blocks required: 1048433 (header 3 
>+ bitmap 38 + memory 1048392)
>May  6 14:31:15 diskdump: activating succeeded
>
>  $ cat /proc/diskdump
># sample_rate: 8
># block_order: 2
># fallback_on_err: 1
># allow_risky_dumps: 1
># dump_level: 0
># compress: 0
># total_blocks: 1048433
>#
>================================================
>   
>  Why  "cat /proc/diskdump" command does not show registered device? 
>   
>  I tried to test diskdump functionality by executing "echo c > /proc/sysrq-
>trigger "  command. 
>   
>  After reboot I execute "savecore /dev/sdam2" command. But it is not 
>successful as dump has not taken on the device.
>   
>  How to solve this problem? 

Your dump device (/dev/sdam2) may not be available to diskdump.
Diskdump of RHEL4 u3 supports only the following device.
Please check your HBA of dump device.

o aic7xxx
o aic79xx
o ipr
o mptfusion
o megaraid
o sym53c8xx
o sata_promise
o ata_piix


Takao Indoh