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Re: "yum update" with most of the rpms already on a USB key?



2009/3/2 Michael J Gruber <michaeljgruber+gmane fastmail fm>:
> Robert P. J. Day venit, vidit, dixit 02.03.2009 14:57:
>> On Mon, 2 Mar 2009, Mike Cloaked wrote:
>>
>>>
>>>
>>> Robert P. J. Day-2 wrote:
>>>>   so, just so i don't misunderstand, i want to do a *full* system
>>>> update, but i want to specify a local directory to check *first*
>>>> for any necessary rpm files before venturing online, in order to
>>>> minimize downloading.  is that what's going to happen here?
>>>> thanks.
>>> One option is to plug in your usbkey, and then rsync or cp the rpms over to
>>> /var/cache/yum....  on the system you are about to update.  Then yum -y
>>> update will update the full system, and only download any additional rpms
>>> into /var/cache/yum/ that it needs over and above those you copied in from
>>> the key.
>>
>>   i thought of that and was fairly sure it would work, but that
>> approach has two issues:
>>
>> 1) i wasn't *absolutely* sure that yum doesn't squirrel away any
>> accompanying meta-info as it's populating /var/cache/yum so i was a
>> little nervous about just dumping a pile of extra rpms in there which
>> yum itself didn't stash there.
>>
>> 2) on some systems, /var might be a separate filesystem and just isn't
>> capable of handling 1 or 2 Gig of packages tossed into it.  (yes,
>> yes, symlinks, i know. :-)
>>
>> hence wanting to specify an additional local repository to be used
>> in conjunction with the standard online one.  i'm still a little
>> nervous about the earlier suggestion of:
>>
>>   # yum localupdate /location/of/updates/*.rpm
>>
>> in my mind, specifying an explicit list of rpms to "update" always
>> makes me think that it should be trying to update *exactly* that set
>> of packages.  that's not what i want -- i want a full system update
>> for which i can identify a convenient local directory that can contain
>> any useful *subset* of packages that don't need to be downloaded.
>
> localupdate only updates the mentioned packages, plus dependencies. But
> you can always follow up with an ordinary "yum update".
>
>> sort of:
>>
>>   # yum update --look_here_first <local_dir_name_full_of_rpms>
>>
>> is that what that "localupdate" incantation is going to do?  and if
>
> No, see above.
>
>> so, isn't there an appropriate option to specify just the directory,
>> rather than having to wildcard the entire set of rpm file names in
>> that directory?
>
> cp'ing/rsync'ing over works fine.
>
> If you do this often it may be worthwhile to "createrepo" on the stick
> and to specify that repo as a permanent yum repo.
>
> Michael
>
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adding cost < 1000  to your repos in yum.conf will do the work or
installing yum-priorites and setting the priorities of the repos.


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