[Yum] Yum service hangs

[seth vidal]

On Wed, 2004-09-01 at 11:01, Ugo Bellavance wrote:
> Hi,
> 
> 	I use the yum service on Tao Linux (RHEL 3.0 clone) and it tends to 
> hang sometimes.  This means that I can't run yum manually and the 
> updates aren't done.  When I try to run it manually I get this error:
> 
> [root at server divers]# yum update
> 
> Existing lock /var/run/yum.pid: another copy is running. Aborting.
> 
> 
> 	This is the ps -aux | grep yum output:
> 
> [root at server divers]# ps -aux | grep yum
> root      9794  0.0  0.0  2136  476 ?        S    Aug31   0:00 /bin/sh 
> /etc/cron.daily/yum.cron
> root      9795  0.0  0.0  1960  380 ?        S    Aug31   0:00 awk -v 
> progname=/etc/cron.daily/yum.cron progname {?????   print progname 
> ":\n"?????   progname="";????       }????       { print; }
> root      9796  0.0  0.5 15104 5808 ?        S    Aug31   0:00 
> /usr/bin/python /usr/bin/yum -R 10 -e 0 -d 0 -y update yum
> 
> 	Another consequence is that my daily cronjobs don't end untill I kill 
> the processes.
> 
> This is the message I get from cron's e-mail once I do.
> 
> /usr/bin/run-parts: line 36:  9794 Terminated              $i 2>&1
>        9795                       | awk -v "progname=$i" 'progname {
> 				   print progname ":\n"
> 				   progname="";
> 			       }
> 			       { print; }'
> 
> Then, I delete /var/run/yum.pid and I can run yum manually.
> 
> Someone on another list said that it looks like it hangs while trying to 
> read from the mirror.  Is it possible for a repo to hang a client by not 
> replying?
> 

unless your repos are REAAAAAAAAAAAAAAALLY slow, I've found that a hang
in yum is most often caused by an rpmdb lockup.
-sv