[CentOS] Yum hangs while doing update

[ken]

On 07/01/2013 02:04 PM Johnny Hughes wrote:
> On 07/01/2013 12:25 PM, ken wrote:
>> On 07/01/2013 01:21 PM Reindl Harald wrote:
>>> Am 01.07.2013 19:16, schrieb ken:
>>>> About thirty minutes ago I started an update.  Everything downloaded
>>>> fine.  But when it came to "Running Transaction", it hung:
>>>>
>>>> Running rpm_check_debug
>>>> Running Transaction Test
>>>> Finished Transaction Test
>>>> Transaction Test Succeeded
>>>> Running Transaction
>>>>      Updating       : xulrunner
>>>>        1/18
>>>>
>>>> And there it sits still.
>>>>
>>>> There's plenty of disk space.  The load on the CPU is under 1.0.  There
>>>> is some disk activity, but no way so much as to cause anything to hang
>>>> and no major writing related to yum.  Disk reads are just about null,
>>>> except just now when I grep'ed for something to make sure that the disk
>>>> could be read.  I'm not using even half of the available RAM
>>> what about look in dmesg and/or /var/log/messages?
>>>
>> No.  Nothing relevant there.
>
> Normally, there are a couple of big things to check:
>
> 1.  DNS is properly resolving the mirror and your the computer doing the
> update names.
> 2.  You do not have a full /var/ or /tmp/ partition
> 3.  You do not have a read only filesystem (usually due to a driver
> error ... full partitions will act the same way). Make sure you can
> write to /var/ and /tmp/
> 4.  Look at bandwidth to ensure it is not slow, look for a transparent
> webproxy in the path, etc.

yum already got past the downloading phase of the update process (see 
above), and as said above also, the filesystem is fine.  So none of 
those things come into play here.