[ale] fstab question

Jim Kinney jim.kinney at gmail.com
Thu Nov 5 08:41:17 EST 2009


The futzing with ethX will likely continue as the board process still
has to walk the buss tree to find devices. The joy will always be the
order is determined by chipset walking methods. Some do onboard first
and others do onboard last (and the ones APS uses change on boot up!).
The parallel init is newer than '04 (I think). '08 saw it in the
kernel around 2.6.26. It lets things start out of order (screaming
fast boot times are nice for a laptop) and won't block the bootup on a
single process failure.

On Wed, Nov 4, 2009 at 10:08 PM, Jeff Hubbs <jhubbslist at att.net> wrote:
> Jim Kinney wrote:
>> that's still probably the kernel. How does persistent naming with udev
>> work in the bootup phase?
> I haven't really dealt with it much except for the network rules...when
> I port an image from one system to another of similar arch, I have to
> futz with that or the machine thinks eth0 is eth1.
>> Does Gentoo use the new parallel init?
>>
> Apparently it's been available since at least 2004; haven't messed with it.
>> On Wed, Nov 4, 2009 at 4:29 PM, Jeff Hubbs <jhubbslist at att.net> wrote:
>>
>>> Unsurprising; I personally haven't used an hd device in quite some time
>>> except for a thin client system I'm running right now whose CF card in a
>>> CardBus adapter comes up as /dev/hda.  So I guess it's the PCMCIA stuff
>>> that's doing that.
>>>
>>> Greg Freemyer wrote:
>>>
>>>> On Wed, Nov 4, 2009 at 3:42 PM, Jeff Hubbs <jhubbslist at att.net> wrote:
>>>>
>>>>
>>>>> Because Gentoo uses udev to facilitate persistent naming, this isn't
>>>>> much of an issue...I've been using hd, sd, and md devices/partitions for
>>>>> years and have never had anything get flipped.
>>>>>
>>>>>
>>>> Jeff,
>>>>
>>>> It did not go anywhere, but I just saw a lkml thread discussing
>>>> end-of-life (EOL)-ing the /dev/hdX drviver interface.
>>>>
>>>> As part of the discussion, fstab entries with /dev/hdX was was brought
>>>> up as roadblock.  After a few emails they concluded there were so few
>>>> users still doing that, that it was not a roadblock.  (I was very
>>>> surprised by that.)
>>>>
>>>> But they also agreed there was no hurry to EOL the /dev/hdX driver
>>>> set, so they just dropped the discussion.  I assume in a year or two
>>>> they will pick it back up.
>>>>
>>>> But if you are depending on /dev/hdX names being stable into the
>>>> distant future, at some point you will be proven wrong and will have
>>>> to change to /dev/sdX names.  If you were using mount by label, etc.,
>>>> then you would not have a problem.
>>>>
>>>> Greg
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>>>>
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>>
>>
>>
>>
>
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-- 
-- 
James P. Kinney III
Actively in pursuit of Life, Liberty and Happiness



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