From: "H. Peter Anvin" <hpa@zytor.com>
To: kreijack@inwind.it
Cc: Goffredo Baroncelli <kreijack@libero.it>,
cwillu <cwillu@cwillu.com>,
helmut@hullen.de, linux-btrfs@vger.kernel.org
Subject: Re: R: Re: Subvolumes and /proc/self/mountinfo
Date: Wed, 20 Jun 2012 14:49:18 -0700 [thread overview]
Message-ID: <4FE2455E.2090007@zytor.com> (raw)
In-Reply-To: <4FE21134.9090501@libero.it>
On 06/20/2012 11:06 AM, Goffredo Baroncelli wrote:
>
> Am not saying that we *should* move the kernel away from /boot. I am
> only saying that having the kernel near /lib/modules *has* some advantages.
>
> Few year ago there are some gains to have a separate /boot (ah, the time
> when the bios were unable to address the bigger disk), where there are
> the minimum things to bootstrap the system.
>
There still is (in fact this exact problem has made a comeback, as there
are plenty of BIOSes which have bugs above the 2 TB mark); however,
there are also issues with RAID (firmware often cannot address all the
devices in the system -- and no, that isn't ancient history, I have a
system exactly like that that I bought last year), remote boot media
(your / might be on an iSCSI device, or even a network filesystem!) and
all kinds of situations like that.
The bottom line is that /boot is what the bootloader needs to be able to
address, whereas / can wait until the kernel has device drivers. That
is a *HUGE* difference.
> Now we have the possibility to move the kernel near the modules, and
> this could lead some interesting possibility: think about different
> linux installations, with an own kernel version and an own modules
> version; what are the reasons to put together under /boot different
> kernel which potential conflicting names ? de facto standard ?
> historical reasons ? Nothing wrong here; but also the idea to moving the
> kernel under /lib/modules is not so wrong.
No, it is completely, totally and very very seriously wrong.
-hpa
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
next prev parent reply other threads:[~2012-06-20 21:49 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-20 12:02 R: Re: Subvolumes and /proc/self/mountinfo Goffredo Baroncelli <kreijack@libero.it>
2012-06-20 15:37 ` H. Peter Anvin
2012-06-20 16:34 ` Goffredo Baroncelli
2012-06-20 17:41 ` H. Peter Anvin
2012-06-20 18:06 ` Goffredo Baroncelli
2012-06-20 19:15 ` Helmut Hullen
2012-06-20 20:22 ` Goffredo Baroncelli
2012-06-20 21:49 ` H. Peter Anvin [this message]
2012-06-21 5:47 ` Goffredo Baroncelli
2012-06-21 11:46 ` Martin Steigerwald
2012-06-21 17:05 ` Goffredo Baroncelli
2012-06-21 13:38 ` H. Peter Anvin
2012-06-21 17:05 ` Goffredo Baroncelli
2012-06-21 17:11 ` H. Peter Anvin
-- strict thread matches above, loose matches on Subject: below --
2012-06-20 12:10 Goffredo Baroncelli <kreijack@libero.it>
2012-06-20 11:51 Goffredo Baroncelli <kreijack@libero.it>
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