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Odd problem with installing RHEL5.7
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Gary Heston
Jan 26, 2012, 12:23:02 AM1/26/12
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I've run into an odd problem with RHEL5.7 x86_64, installed on a server with a
SuperMicro X7DCA motherboard.
Once booted up in the installed OS, the DVD drive is nonexistant.
Nothing shows up for it in /dev at all; there's neither a /dev/hdn device, nor
a /dev/sdn entry, no link to /dev/cdrom, nothing.
However, I can boot a CD or DVD in the drive--including the install disc
for RHEL5.7.
This server was running Fedora 7 x86_64 for the previous few years with
no DVD drive issues. Copying discs to the arrays worked fine.
Has anyone ever seen anything like this or have any idea how to resolve
it? I know that some things changed between RHEL5.5, which I'm using on
several systems, and RHEL5.7, which broke the kickstart %post capability
of mounting an NFS share. I have no idea on how to get the DVD working
under RHEL5.7; I've never seen or heard of anything like this happening.
Any suggestions?
Gary
SuperMicro X7DCA motherboard.
Once booted up in the installed OS, the DVD drive is nonexistant.
Nothing shows up for it in /dev at all; there's neither a /dev/hdn device, nor
a /dev/sdn entry, no link to /dev/cdrom, nothing.
However, I can boot a CD or DVD in the drive--including the install disc
for RHEL5.7.
This server was running Fedora 7 x86_64 for the previous few years with
no DVD drive issues. Copying discs to the arrays worked fine.
Has anyone ever seen anything like this or have any idea how to resolve
it? I know that some things changed between RHEL5.5, which I'm using on
several systems, and RHEL5.7, which broke the kickstart %post capability
of mounting an NFS share. I have no idea on how to get the DVD working
under RHEL5.7; I've never seen or heard of anything like this happening.
Any suggestions?
Gary
Chris Adams
Jan 30, 2012, 10:03:28 AM1/30/12
to
Once upon a time, Gary Heston <ghe...@hiwaay.net> said:
>I've run into an odd problem with RHEL5.7 x86_64, installed on a server with a
>SuperMicro X7DCA motherboard.
>
>Once booted up in the installed OS, the DVD drive is nonexistant.
>Nothing shows up for it in /dev at all; there's neither a /dev/hdn device, nor
>a /dev/sdn entry, no link to /dev/cdrom, nothing.
>
>However, I can boot a CD or DVD in the drive--including the install disc
>for RHEL5.7.
Weird. I'm not seeing anything odd on my RHEL 5.7 servers, but only a
>I've run into an odd problem with RHEL5.7 x86_64, installed on a server with a
>SuperMicro X7DCA motherboard.
>
>Once booted up in the installed OS, the DVD drive is nonexistant.
>Nothing shows up for it in /dev at all; there's neither a /dev/hdn device, nor
>a /dev/sdn entry, no link to /dev/cdrom, nothing.
>
>However, I can boot a CD or DVD in the drive--including the install disc
>for RHEL5.7.
few have optical drives (and none of the drives have ever been used).
IIRC the install disc uses the same kernel as the installed OS (that
didn't use to be the case), so if one sees it, so should the other.
Do you see anything odd in the dmesg output on the installed system?
Does the system see the IDE controller and just not see the device, or
is the controller missing as well? Maybe compare the dmesg output
during the installer (boot the disc in "rescue" mode) with the output on
the installed system to see if there are errors.
Have you tried updating to the latest kernel?
>I know that some things changed between RHEL5.5, which I'm using on
>several systems, and RHEL5.7, which broke the kickstart %post capability
>of mounting an NFS share.
"-o nolock" to your mount command.
--
Chris Adams <cma...@hiwaay.net>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.
Gary Heston
Jan 31, 2012, 11:17:39 PM1/31/12
to
In article <OsGdncyqbZ_dLLvS...@posted.hiwaay2>,
24/7, so opportunities to reboot don't come often.
>Have you tried updating to the latest kernel?
No; I'll look at that as well when I can.
>>I know that some things changed between RHEL5.5, which I'm using on
>>several systems, and RHEL5.7, which broke the kickstart %post capability
>>of mounting an NFS share.
>IIRC that is due to NFS locking defaults changing; you might try adding
>"-o nolock" to your mount command.
I'll add that to the kickstart script and try it on a sacrificial
server.
Thanks,
Gary
Chris Adams <cma...@hiwaay.net> wrote:
>Once upon a time, Gary Heston <ghe...@hiwaay.net> said:
>>I've run into an odd problem with RHEL5.7 x86_64, installed on a server with a
>>SuperMicro X7DCA motherboard.
>>Once booted up in the installed OS, the DVD drive is nonexistant.
>>Nothing shows up for it in /dev at all; there's neither a /dev/hdn device, nor
>>a /dev/sdn entry, no link to /dev/cdrom, nothing.
>>However, I can boot a CD or DVD in the drive--including the install disc
>>for RHEL5.7.
>Weird. I'm not seeing anything odd on my RHEL 5.7 servers, but only a
>few have optical drives (and none of the drives have ever been used).
>IIRC the install disc uses the same kernel as the installed OS (that
>didn't use to be the case), so if one sees it, so should the other.
>Do you see anything odd in the dmesg output on the installed system?
>Does the system see the IDE controller and just not see the device, or
>is the controller missing as well? Maybe compare the dmesg output
>during the installer (boot the disc in "rescue" mode) with the output on
>the installed system to see if there are errors.
I'll look at what I can tomorrow; that server stays busy pretty much
>Once upon a time, Gary Heston <ghe...@hiwaay.net> said:
>>I've run into an odd problem with RHEL5.7 x86_64, installed on a server with a
>>SuperMicro X7DCA motherboard.
>>Once booted up in the installed OS, the DVD drive is nonexistant.
>>Nothing shows up for it in /dev at all; there's neither a /dev/hdn device, nor
>>a /dev/sdn entry, no link to /dev/cdrom, nothing.
>>However, I can boot a CD or DVD in the drive--including the install disc
>>for RHEL5.7.
>Weird. I'm not seeing anything odd on my RHEL 5.7 servers, but only a
>few have optical drives (and none of the drives have ever been used).
>IIRC the install disc uses the same kernel as the installed OS (that
>didn't use to be the case), so if one sees it, so should the other.
>Do you see anything odd in the dmesg output on the installed system?
>Does the system see the IDE controller and just not see the device, or
>is the controller missing as well? Maybe compare the dmesg output
>during the installer (boot the disc in "rescue" mode) with the output on
>the installed system to see if there are errors.
24/7, so opportunities to reboot don't come often.
>Have you tried updating to the latest kernel?
>>I know that some things changed between RHEL5.5, which I'm using on
>>several systems, and RHEL5.7, which broke the kickstart %post capability
>>of mounting an NFS share.
>IIRC that is due to NFS locking defaults changing; you might try adding
>"-o nolock" to your mount command.
server.
Thanks,
Gary
nik Simpson
Feb 3, 2012, 5:38:53 PM2/3/12
to
On 1/30/2012 9:03 AM, Chris Adams wrote:
> Once upon a time, Gary Heston<ghe...@hiwaay.net> said:
>> I've run into an odd problem with RHEL5.7 x86_64, installed on a server with a
>> SuperMicro X7DCA motherboard.
>>
>> Once booted up in the installed OS, the DVD drive is nonexistant.
>> Nothing shows up for it in /dev at all; there's neither a /dev/hdn device, nor
>> a /dev/sdn entry, no link to /dev/cdrom, nothing.
>>
>> However, I can boot a CD or DVD in the drive--including the install disc
>> for RHEL5.7.
>
> Weird. I'm not seeing anything odd on my RHEL 5.7 servers, but only a
> few have optical drives (and none of the drives have ever been used).
> IIRC the install disc uses the same kernel as the installed OS (that
> didn't use to be the case), so if one sees it, so should the other.
>
> Do you see anything odd in the dmesg output on the installed system?
> Does the system see the IDE controller and just not see the device, or
> is the controller missing as well? Maybe compare the dmesg output
> during the installer (boot the disc in "rescue" mode) with the output on
> the installed system to see if there are errors.
Looking at the specs of the motherboard, the controller is most likely
> Once upon a time, Gary Heston<ghe...@hiwaay.net> said:
>> I've run into an odd problem with RHEL5.7 x86_64, installed on a server with a
>> SuperMicro X7DCA motherboard.
>>
>> Once booted up in the installed OS, the DVD drive is nonexistant.
>> Nothing shows up for it in /dev at all; there's neither a /dev/hdn device, nor
>> a /dev/sdn entry, no link to /dev/cdrom, nothing.
>>
>> However, I can boot a CD or DVD in the drive--including the install disc
>> for RHEL5.7.
>
> Weird. I'm not seeing anything odd on my RHEL 5.7 servers, but only a
> few have optical drives (and none of the drives have ever been used).
> IIRC the install disc uses the same kernel as the installed OS (that
> didn't use to be the case), so if one sees it, so should the other.
>
> Do you see anything odd in the dmesg output on the installed system?
> Does the system see the IDE controller and just not see the device, or
> is the controller missing as well? Maybe compare the dmesg output
> during the installer (boot the disc in "rescue" mode) with the output on
> the installed system to see if there are errors.
SATA, there's no mention of legacy IDE for the board. Are teh hard
drives on the SATA controller or do you have another controller for the
disk drives?
--
Nik Simpson
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