LiveUSB and PackageKit Updates
Jeff Weiss
jweiss at redhat.com
Tue Oct 14 13:13:09 UTC 2008
Jeff Weiss wrote:
> Michael Solberg wrote:
>> Hi!
>>
>> I'm sure someone's thought of this before, but I keep running into this
>> issue on the LiveUSB on the XO.
>>
>> The issue is that /var/cache/yum is mounted as tmpfs on the Live image.
>> When I log into a desktop session that already knows my wireless key,
>> the updates applet attempts to download all the packages from Rawhide.
>> This fills the 256MB of RAM pretty quickly and that hangs the machine.
>> Does it make sense to turn that applet off in this case? Or maybe not
>> mount /var/cache/yum as tmpfs when there's an overlay?
>>
>> Michael.
>>
>>
>
> This is two separate issues isn't it? Doesn't /var/cache/yum get
> written to whether you use the applet or yum on the command line?
>
> My understanding of the overlay was that once you write something to it,
> that space is gone forever, even if you delete those files. So having
> cache as part of the overlay will just make it fill up quicker. And
> aren't yum cache hits pretty unlikely? Wouldn't it just be when someone
> re-installs something they've uninstalled? I would have thought tmpfs
> is the way to go here - when end users run yum, it's better to
> re-download than to use up the overlay - once that's gone, you're hosed.
>
> Jeff Weiss
>
Er, on second thought there's really not much sense in eating up swap
space. Maybe we should just turn off the cache (keepcache=0) ?
I suspect that means it'll always have to download headers, but
bandwidth is more plentiful than memory on the XO :)
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