Re: [gentoo-user] gentoo on a kvm - can't install kernel sources

[Michael Mair-Keimberger <m.mairkeimberger@gmail.com>]

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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...

thx
mmike

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