[ccoss] Re: unmount cdrom, device is busy, what is using it,using fuser as a solution

  • From: Christopher Paulin <cpaulin@xxxxxxx>
  • To: ccoss@xxxxxxxxxxxxx
  • Date: Fri, 28 Nov 2003 22:52:46 -0500

Bill wrote:

>Cool. I think these tips are great! I wonder if we should create a 
>monthy (or even weekly) tip on www.ccoss.org? ?Half the battle of using 
>a computer effectively is knowing what can be done let alone what can do 
>what you need!
>
>Cheers
>
I was thinking the same thing except to include these in the Unix 
Utilities by Example document.

Actually, what I was working on was copying a CD that came with a 
motherboard I installed for someone without using the Windows programs 
that came with my CD-recorder, and I found some things out about Linux 
on the way when I got stuck that I wanted to share with others and get 
advise for. That CD was not readable my the computer's CD-ROM I was 
working on but was with mine. That computer's CD-ROM works with other 
CDs ok. I realize now that I didn't need to copy it to the hard drive, 
but I didn't know how well the CD would read considering that it 
couldn't be read on the computer I worked on, so I now have a good copy 
according to the MD5 comparisons. Only one file didn't copy correctly 
the first time.

For copying the CD, I've been following 
"http://www.tldp.org/HOWTO/CD-Writing-HOWTO-3.html#ss3.1";. I got to this 
command: "mkisofs  -r   -o cd_image   private_collection/", and I got an 
error when I ran it:

chris@p450:/mnt/windows_xp/Documents and Settings> mkisofs -r -o 
cd_image temp_cd_copy/*
Using READM000.TXT;1 for  /Readme.txt (Readme.TXT)
Using READM001.TXT;1 for  /Readme.TXT (Readme.txt)
Using READM002.TXT;1 for  /Readme.txt (Readme.TXT)
Using READM003.TXT;1 for  /Readme.TXT (Readme.TXT)
Using READM004.TXT;1 for  /Readme.TXT (Readme.TXT)
Using READM005.TXT;1 for  /Readme.TXT (Readme.TXT)
mkisofs: Error: 'temp_cd_copy/usb/Readme.TXT' and 
'temp_cd_copy/Utility/Readme.TXT' have the same Rock Ridge name 
'Readme.TXT'.
mkisofs: Error: 'temp_cd_copy/Modem/Readme.TXT' and 
'temp_cd_copy/Lan/Readme.TXT' have the same Rock Ridge name 'Readme.TXT'.
mkisofs: Error: 'temp_cd_copy/Sound/Readme.TXT' and 
'temp_cd_copy/Modem/Readme.TXT' have the same Rock Ridge name 'Readme.TXT'.
mkisofs: Error: 'temp_cd_copy/usb/Readme.TXT' and 
'temp_cd_copy/Sound/Readme.TXT' have the same Rock Ridge name 'Readme.TXT'.
mkisofs: Error: 'temp_cd_copy/Utility/Readme.TXT' and 
'temp_cd_copy/Sound/Readme.TXT' have the same Rock Ridge name 'Readme.TXT'.
mkisofs: Unable to sort directory
chris@p450:/mnt/windows_xp/Documents and Settings>

I got as far as finding out that this is a documented bug according to 
the author, Jörg Schilling, and trying to figure out how to update to 
cdtools-2.0. I never found out if this was fixed. After that, I took a 
break.

Christopher Paulin

>
>dave wrote:
>
>  
>
>>you can also do this with the lsof (list open files) command:
>>
>>
>>
>>Christopher Paulin wrote:
>> 
>>
>>    
>>
>>>Have you ever tried to unmount the CD-ROM, and it says the device is 
>>>busy. This is a solution to find out what process is using the CD-ROM.
>>>
>>>chris@p450:~> cat /etc/fstab
>>>.....................
>>>/dev/cdrecorder      /media/cdrecorder    auto       
>>>ro,noauto,user,exec   0 0
>>>.....................
>>>chris@p450:~> ls -l /dev/cdrecorder
>>>lrwxrwxrwx    1 root     root            3 2003-10-13 21:35 
>>>/dev/cdrecorder -> sr0
>>>chris@p450:~> fuser -m /dev/sr0
>>>/dev/sr0:             1247
>>>chris@p450:~> fuser -m /dev/cdrecorder
>>>/dev/cdrecorder:      1247
>>>   
>>>
>>>      
>>>
>
>
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>
>  
>


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