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<H1>[Mageia-dev] Issues with dracut</H1>
<B>Colin Guthrie</B>
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TITLE="[Mageia-dev] Issues with dracut">mageia at colin.guthr.ie
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<I>Sat Dec 17 00:19:55 CET 2011</I>
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<PRE>'Twas brillig, and JA Magallon at 16/12/11 23:08 did gyre and gimble:
><i> On Fri, 16 Dec 2011 12:35:22 +0000
</I>><i> Colin Guthrie <<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">mageia at colin.guthr.ie</A>> wrote:
</I>><i>
</I>>><i> Hiya,
</I>>><i>
</I>>><i> 'Twas brillig, and JA Magallon at 16/12/11 12:06 did gyre and gimble:
</I>>>><i> After those couple previous thread it looks like move to dracut is
</I>>>><i> ongoing, so I decided to try it.
</I>>><i>
</I>>><i> Good! This is exactly the kind of feedback we need!
</I>>><i>
</I>>>><i> I found a couple problems:
</I>>>><i>
</I>>>><i> - dracut inists on loading nouveau driver. With mknitrd, just booting with nokmsboot
</I>>>><i> works. Booting with a dracut generated initrd ignores that. I think it is plymouth
</I>>>><i> that forces it, even if I added 'blacklist nouveau' in a .conf file in modprobe.d:
</I>>>><i>
</I>>>><i> dracut -f:
</I>>><i>
</I>>><i> I'll include it but if it's blacklisted, it shouldn't ultimately be used
</I>>><i> in the ramfs even if it's included. That said, it's clearly inefficient
</I>>><i> to include it if it is blacklisted so we should try and fix that. Anssi,
</I>>><i> could this be your code to detect the h/w that causes it to bypass any
</I>>><i> blacklist checks (not sure if there are actually any blacklist checks
</I>>><i> when building the initrd... not relaly looked at it much)
</I>>><i>
</I>>><i> I think the nokmsboot parameter is not working in dracut because the
</I>>><i> udev rule that interprets it uses the grep command and that is not
</I>>><i> currently included in the ramdisk. I could hack it in easy enough, but
</I>>><i> we should maybe see if a more minimal method of detecting it in the
</I>>><i> commandline is possible.
</I>>><i>
</I>><i>
</I>><i> If its is (d)ash:
</I>><i>
</I>><i> CMDLINE=$(cat /proc/cmdline)
</I>><i> case "${CMDLINE}" in
</I>><i> *" nokmsboot "*)
</I>><i> echo YES
</I>><i> ;;
</I>><i> esac
</I>><i>
</I>><i> if if uses bash:
</I>><i>
</I>><i> CMDLINE=$(cat /proc/cmdline)
</I>><i> if [[ "${CMDLINE}" == *" nokmsboot "* ]]
</I>><i> then
</I>><i> echo YES
</I>><i> fi
</I>
Well it's in a udev rule so it's not 100% predictable what it's using.
I'll have a wee look just now.
Col
--
Colin Guthrie
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