Date: Mon, 10 Dec 2001 17:37:48 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: Jordan Hubbard <jkh@winston.freebsd.org> Cc: Robert Watson <rwatson@FreeBSD.ORG>, Peter Wemm <peter@wemm.org>, Terry Lambert <tlambert2@mindspring.com>, freebsd-arch@FreeBSD.ORG Subject: Re: Proposed auto-sizing patch to sysinstall (was Re: Using a larger block size on large filesystems) Message-ID: <200112110137.fBB1bm149878@apollo.backplane.com> References: <44607.1008027292@winston.freebsd.org>
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:
:The reason that it's there, and I disliked it too when I first thought
:about it, is that since the partitions are not created until the very
:end, you don't get the nice /dev/sd0s1f type of device names since the
:label editor doesn't know this until it creates the chunks with
Oh. It's REAL easy to create the partitions in real time. If you
look at the code I comitted to -current to do the scale retry loop
and then consider that I also added a flag to the Chunk structure
indicating the automatically created chunks, all you have to do is
maintain a temporary copy of your disk template and delete/regenerate
the auto partitions every time someone makes a change.
I think it's very important for the user to see what is going on in
real time.
:libdisk. The reason it doesn't create them initially is because
:everything except the manually created filesystems are done
:"speculatively" since it would be very expensive to create and delete
:chunks when shuffling between profiles, and libdisk is also fragile
It's inexpensive. A few microseconds per keystroke at most... nothing
is actually going to disk after all, you are just manipulating a bunch
of malloc()'d libdisk structures.
:enough that I'd sort of expect that to break if you did it enough
:times. So I thought the user might like the chance to actually see
If so we'll fix the bugs. It's been fairly dependable in my tests.
:
:> If you haven't already, each profile needs to have a small paragraph
:> associated with it documenting what it is designed to do. Then as you
:
:Not a paragraph, but a single line, yes. It's displayed at the bottom
:of the screen whenever auto mode is invoked or the profile is switched.
:
:- Jordan
-MAtt
Matthew Dillon
<dillon@backplane.com>
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