[H-GEN] a process that won't die

Daniel Quinlan daniel at netwise.net.au
Fri Oct 6 02:02:59 EDT 2000


On Fri, Oct 06, 2000 at 11:09:22AM +1000, Martin Pool wrote:
> If the machine is still up, you can track this down by working out
> which semaphore is held.  Please run this command to show the wait
> channel for all the processes:
> 
>   ps awwx -eo pid,tt,user,fname,tmout,f,wchan

23021 ?        root     useradd      - 100 do_down

> You might also try 
> 
>   strace -p 23021
> 
> which might discover which system call it's waiting it.  (Or it might
> hang, we're not quite sure.)

it just hung. tho I did notice something, strace's PID is now the
PPID of useradd

someone else suggested running lsof which yielded

host:~# lsof -p 23021 -lR
COMMAND   PID PPID     USER   FD   TYPE DEVICE  SIZE   NODE NAME
useradd 23021 6082        0  cwd    DIR    8,1  2048  34830 [0801]
useradd 23021 6082        0  rtd    DIR    8,1  1024      2 [0801]
useradd 23021 6082        0  txt    REG    8,1 50364 120947 [0801]
useradd 23021 6082        0    0u   CHR    3,3        49840 [0801]
useradd 23021 6082        0    1u   CHR    3,3        49840 [0801]
useradd 23021 6082        0    2u   CHR    3,3        49840 [0801]
useradd 23021 6082        0    3u   REG    3,2     0  57572 [0302]
useradd 23021 6082        0    4w   REG    3,2  4608  61743 [0302]
useradd 23021 6082        0    5r   REG    3,2   498  57571 [0302]
useradd 23021 6082        0    6wW  REG    8,1     0  28728 [0801]
useradd 23021 6082        0    7u   REG    8,1  1742  28958 [0801]
useradd 23021 6082        0    8u   REG    8,1  1141  28940 [0801]
useradd 23021 6082        0    9r   REG    8,1  1742  28958 [0801]
useradd 23021 6082        0   10w   CHR    4,0        49902 [0801]


when I run userdel this happens

host:/etc# userdel -r michael
userdel: unable to lock password file

which led me to find this

host:/etc# ls -al /etc/.pwd.lock 
-rw-------    1 root     root            0 Oct  6 10:28 /etc/.pwd.lock

not sure if it's related

and this might be of interest. (this being why I'm upgrading the kernel)
host:/etc# uname -a
Linux host 2.0.34 #2 Thu Jul 9 10:57:48 EST 1998 i586 unknown


regards,
-- 
Daniel Quinlan				daniel at netwise.net.au
Netwise Australia			ph:  07 3252 8111
"Engineering Your Network Solution"	fax: 07 3216 0226
GPG Key: http://mage.netwise.net.au/daniel.pub
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 232 bytes
Desc: not available
URL: <http://lists.humbug.org.au/pipermail/general/attachments/20001006/ba6dc6f9/attachment.sig>


More information about the General mailing list