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Message-ID: <521A5FEC.6000308@gmail.com>
Date: Sun, 25 Aug 2013 21:50:04 +0200
From: Alan McKinnon <alan.mckinnon@gmail.com>
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Subject: Re: [gentoo-user] gentoo on a kvm - can't install kernel sources
References: <1753073.v6jMLBITqg@asterix> <521A2F6B.5050603@gmail.com> <2077307.k2HumuzRxI@asterix>
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On 25/08/2013 19:01, Michael Mair-Keimberger wrote:
>
>
> On Sunday 25 August 2013 18:23:07 Alan McKinnon wrote:
>
>> On 25/08/2013 15:51, Michael Mair-Keimberger wrote:
>
>> > Hi List,
>
>> >
>
>> >
>
>> >
>
>> > Since a few days i'm trying to install gentoo on a kvm guest from
>
>> > edis.at. They support to boot from a gentoo minimal live-cd in order to
>
>> > install your own gentoo. The system has 5GB storage and 256MB ram.
>
>> > Actually that should be enough for a minimal installation. However, till
>
>> > now i couldn't get over that point where i'm trying to install the
>
>> > kernel sources...
>
>> >
>
>> >
>
>> >
>
>> > The partition of the hd looks like this right now:
>
>> >
>
>> >
>
>> >
>
>> > 64MB /boot
>
>> >
>
>> > 256MB swap
>
>> >
>
>> > ~4,3GB /
>
>> >
>
>> >
>
>> >
>
>> > Swap is active and i also made sure there are enough inodes on / (i had
>
>> > to raised them).
>
>> >
>
>> >
>
>> >
>
>> > Even though there is enough space and 256mb ram + 256mb swap should be
>
>> > enough ram i can't install (copy) the kernel sources. They just stop
>
>> >
>
>> > suddenly. There is nothing in the build.log. Last view lines are:
>
>> >>>> /usr/src/linux-3.10.7-gentoo/sound/soc/pxa/pxa2xx-ac97.c
>
>> >>>>
>
>> >>>> /usr/src/linux-3.10.7-gentoo/sound/soc/pxa/pxa2xx-pcm.c
>
>> >>>>
>
>> >>>> /usr/src/linux-3.10.7-gentoo/sound/soc/pxa/pxa-ssp.c
>
>> >>>>
>
>> >>>> /usr/src/linux-3.10.7-gentoo/sound/soc/pxa/pxa2xx-i2s.c
>
>> >
>
>> > However i'll get errors in dmesg and it seems i'll get out of memory
>
>> > while installing:
>
>> >
>
>> >
>
>> >
>
>> > [snip]
>
>> >
>
>> > [63599.551452] emerge invoked oom-killer: gfp_mask=0x201da, order=0,
>
>> > oom_score_adj=0
>
>> >
>
>> > [63599.551466] Pid: 12358, comm: emerge Not tainted 3.8.13-gentoo #1
>
>> >
>
>> > .
>
>> >
>
>> > .
>
>> >
>
>> > .
>
>> >
>
>> > [63599.552434] Out of memory: Kill process 13382 (emerge) score 635 or
>
>> > sacrifice child
>
>> >
>
>> > [63599.552435] Killed process 13382 (emerge) total-vm:438472kB,
>
>> > anon-rss:206552kB, file-rss:0kB
>
>> >
>
>> > [snip]
>
>> >
>
>> >
>
>> >
>
>> > Any idea what i can do here, except buying an better kvm? From the docs
>
>> > 256MB should be fine so i don't know why it doesn't work?
>
>>
>
>> I cannot untar kernel sources on my virtualbox VMs with <=256M either,
>
>> and that goes back at least 18 months. tar just consumes too much
>
>> memory. Your options:
>
>>
>
>> - untar somewhere else and copy the uncompressed sources over
>
>> - get more memory
>
>>
>
>> when you build the kernel, you will find the same issue. gcc is going to
>
>> use much more ram than 256M to get the job done.
>
>>
>
>> Do keep in mind that you can probably get that VM to *run* in teeny
>
>> amounts of memory - maybe even only 64M - but building a kernel is a
>
>> hugely memory-intensive task
>
>
>
> Thx for crosschecking.
>
>
>
> Well it looks like docs are out of date, 256MB ram is definitely not
> enough. I already though about to extract it here and than copy it to
> the vm. However, uploading uncompressed kernel sources would take quite
> some time over my slow internet connection and i really wanted to avoid
> that.
>
>
>
> Anyway, either copy or buy a better vm. I guess i'll gonna make my own
> vm at home and copy the full system over...
I'd recommend cross-building just a kernel and modules locally and
copying that to the vm, it will only be about 6 to 8M
Some food for thought:
I do question the wisdom though of running Gentoo on a VM like that.
I've always found that Gentoo (despite all it's fantastic awesomeness
elsewhere) is really not fitted for that specific task very well - it
tends to be a lot of pain and not much gain.
Why do you want Gentoo on the vm? Is there a very good reason, or is it
because you are familiar with it?
If the second reason, you might want to have a look at FreeBSD or one of
the binary distros based of Gentoo like Sabayon. You might find the best
of both worlds in that space.
--
Alan McKinnon
alan.mckinnon@gmail.com