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Server hangs during bootup.
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manu_leo
Guru
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Joined: 20 Jan 2014
Posts: 453
Location: India

PostPosted: Sat Aug 23, 2014 5:51 pm    Post subject: Server hangs during bootup. Reply with quote

Hi Experts,

All was working fine till now. But because the cpu cores were not utilized completely, I increased the 'maximum number of cpu' in the make menuconfig under /usr/src/linux from 32 to 48. My server has 2 Processor of 12 cores each and with hyperthreading TURNED ON, it makes it to 48.

I changed the value to 48 and then recompiled the kernel using :-

Quote:
make -j48 && make -j48 modules_install


I then copied the bzImage to /boot . Then I
Quote:
emrged grub
and ran
Quote:
'grub2-install /dev/sda' and 'grub2-mkconfig -o /boot/grub/grub.cfg'
. All went fine without any errors. I rebooted my server and during the boot time, I see it loading from the new image, but it gets stuck after some time.

It passes all the checks and then gets stuck at
Quote:
'' Configuring Kernel parameters '' .
and just sits them for all.


I am not sure how to get this fixed and need your expertise on it.

Appreciate all your help in advance.
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eccerr0r
Watchman
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Joined: 01 Jul 2004
Posts: 7134
Location: almost Mile High in the USA

PostPosted: Sun Aug 24, 2014 2:44 pm    Post subject: Reply with quote

Screenshot/screen capture (via digital camera) would be helpful.

I don't think building via -j XXX will create a bad kernel unless there's some dependency fault, which likely should have been detected earlier with fewer cpus...

Also it's unneeded to rebuild the bootloader each time you make a new kernel.

You have a rather exotic machine that perhaps needs to be dealt with directly on the LKML if it turns out to be a kernel bug.
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