[PATCH] olpc.fth - grow the root filesystem partition on boot
pgf at laptop.org
Fri Mar 16 23:55:54 EDT 2012
> On Fri, Mar 16, 2012 at 11:58:51AM -0600, Daniel Drake wrote:
> > I'll try to take on this project this release cycle.
> > Posted some thoughts at http://dev.laptop.org/ticket/10040
> Consensus is to implement a partition resize in OpenFirmware as the last
> step of ''fs-update''. This doesn't preclude the initramfs doing it,
> and the initramfs will do the filesystem resize.
i'm a little confused. i know i reported that filesystem resize was
quite fast now, but then james reported that a resize took a really
long time still, and i haven't retested. if a resize takes a really
long time, then i don't think we can do it in initramfs, can we?
> In OpenFirmware, we might either:
> * do the resize only if the .zd file requests it, (a new ''resize:''
> line after ''zblocks-end:''), or
> * do the resize regardless, thus affecting previous builds once a
> firmware update occurs.
> The first option avoids immediate impact to factory scripts which do an
> ''fs-verify'' after ''fs-update''.
> Once factory is given a build that includes ''resize:'', the factory
> scripts will require changing from
> fs-update ...
> fs-verify ...
> fs-update-no-resize ...
> fs-verify ...
> Not changing the scripts will cause an fs-verify failure for the first
> block of the storage.
> I expect builds to begin doing this in the 12.1.0 series, leaving the
> 11.3.1 series unchanged, but we don't easily separate OpenFirmware in
> that way.
> Adding resize: to the end of an .zd file does not cause any error on the
> current version of OpenFirmware on XO-1.75, so it can be added now:
> >From 7ed7ac8452da32bce60208558d0e729a4bfe35b8 Mon Sep 17 00:00:00 2001
> From: James Cameron <quozl at laptop.org>
> Date: Sat, 17 Mar 2012 10:56:30 +1100
> Subject: [PATCH] add resize
> bin/zhashfs.c | 4 ++--
> 1 files changed, 2 insertions(+), 2 deletions(-)
> diff --git a/bin/zhashfs.c b/bin/zhashfs.c
> index 12a0ffb..0d765ea 100644
> --- a/bin/zhashfs.c
> +++ b/bin/zhashfs.c
> @@ -221,8 +221,8 @@ int main(int argc, char **argv)
> LTC_ARGCHK(readlen == zblocksize);
> write_block(0, buf);
> - fprintf(outfile, "zblocks-end:\n");
> - fprintf(zfile, "zblocks-end:\n");
> + fprintf(outfile, "zblocks-end:\nresize:\n");
> + fprintf(zfile, "zblocks-end:\nresize:\n");
> James Cameron
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> Devel at lists.laptop.org
paul fox, pgf at laptop.org
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