LinuxQuestions.org
Visit Jeremy's Blog.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Software
User Name
Password
Linux - Software This forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.

Notices

Reply
 
LinkBack Search this Thread
Old 07-26-2010, 12:32 PM   #1
selfprogrammed
Member
 
Registered: Jan 2010
Location: Minnesota, USA
Distribution: Slackware 10.2, 13.37
Posts: 215

Rep: Reputation: 45
Lilo missing device-mapper no-solution


Lilo complains about the device-mapper is missing from kernel.
"/proc/misc", "Is device mapper missing from kernel?".

This has been reported before and is still occurring.

The device-mapper is missing because it is now optional under the
MD config items with the RAID and LVM stuff. From what I have determined, it must only be needed to handle the mapping of a logical volume address to multiple drives/partitions/sectors.

Lilo was able to cope with simple drives since its creation, and apparently still does, although it gives no indication of it in its complaining.

In my opinion, this is a Lilo bug. It should cope silently with kernels that do not have RAID/LVM and not look like an installation error.

The problem is that the same message (looks identical) has shown up in a non-Lilo related posting.

Question: Is this message coming from somewhere other than Lilo ??

Question: Does everyone who dares turn off the RAID/LVM support have to put up with these kind of error messages ??

Question: In a simple system without RAID and no LVM, are all such missing device-mapper messages bogus ?? That is does anyone know of any situation where the message indicated something important ??

Question: Do users WITHOUT RAID/LVM need to put in the device-mapper
for any other use (besides shutting up Lilo) ??
 
Old 07-27-2010, 06:57 AM   #2
MS3FGX
Guru
 
Registered: Jan 2004
Location: NJ, USA
Distribution: Slackware, Debian
Posts: 5,850

Rep: Reputation: 350Reputation: 350Reputation: 350Reputation: 350
I have seen that message on pretty much every machine I have ever installed LILO on, and always just ignore it. LILO seems rather verbose in general (I.E. warning about LBA 48, even though that is what everyone wants), so I have gotten used to it. It isn't like you have to re-run LILO that often anyway (unless you are a kernel fanatic or something).
 
0 members found this post helpful.
Old 07-29-2010, 04:13 PM   #3
selfprogrammed
Member
 
Registered: Jan 2010
Location: Minnesota, USA
Distribution: Slackware 10.2, 13.37
Posts: 215

Original Poster
Rep: Reputation: 45
Thanks for replying.
After 10 years of using Lilo, this is the first time I have seen this error message.
It only showed up on the latest Slackware relase 13.1 (my previous is Slackware 10.2, which apparently has device-mapper always present).

I assume, that if you are seeing this message too, that you are doing many installs without RAID/LVM, or all that, and are not seeing any other problems.

I could not find the error messages in
>> strings /sbin/lilo
nor could I them in the kernel, nor by grep kernel source.
I do not know where they actually come from.
 
  


Reply

Tags
devicemapper, lilo, lvm, raid


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Custom kernel - lilo complains device-mapper missing donni Linux - Software 3 07-26-2010 12:47 PM
Device-mapper missing from kernel jazpaisley Linux - Kernel 1 07-26-2010 12:09 PM
mkrescue Fatal: device-mapper: only linear boot device supported Molly Slackware 5 01-06-2009 04:35 PM
device mapper / multipath creating extra device, won't let me talk to the one i want chakkerz Linux - Server 1 03-16-2008 05:52 PM
LVM problems, device-mapper missing dworkin Linux - Newbie 3 03-22-2004 04:54 PM


All times are GMT -5. The time now is 10:43 AM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration