Re: Issue building a file based rootfs image with mkfs.btrfs

[Chris Mason <clmason@fusionio.com>]

Hi Saul,

Well, a little bigger than I expected turned into a lot bigger than I
expected.  I've pushed the current code to my integration branch, but
the next step is to re-integrate it with Dave's current tree and push
out rc2.

I need to retest convert as well.

-chris

Quoting Chris Mason (2013-10-14 11:26:55)
> Hi Saul,
> 
> Sorry for the delay, I'll push the patch out this afternoon.
> 
> -chris
> 
> Quoting Saul Wold (2013-10-14 11:25:28)
> > On 10/01/2013 06:18 PM, Chris Mason wrote:
> > > Hi Saul,
> > >
> > > The patch ended up a little bigger than I expected because it is sharing infrastructure with btfs-convert.  Travel added a little more delay, but I'm almost there.
> > >
> > 
> > Any news on this patch?
> > 
> > Sau!
> > 
> > > -chris
> > > ________________________________________
> > > From: Saul Wold [sgw@linux.intel.com]
> > > Sent: Tuesday, October 01, 2013 4:50 PM
> > > To: Chris Mason
> > > Cc: linux-btrfs@vger.kernel.org
> > > Subject: Re: Issue building a file based rootfs image with mkfs.btrfs
> > >
> > > On 09/28/2013 05:29 AM, Chris Mason wrote:
> > >> Quoting Saul Wold (2013-09-19 14:19:34)
> > >>> Hi there,
> > >>>
> > >>> I am attempting to build a rootfs image from an existing rootfs
> > >>> directory tree.  I am using the 0.20 @ 194aa4a of Chris's git repo.
> > >>>
> > >>> The couple problem I saw was that the target image file needed to exist,
> > >>> although I think I can patch that then the FS size was much larger than
> > >>> the actual size, I tracked this to the usage of ftw not accounting for
> > >>> symlinks, I have a patch for that which I will send once I finish
> > >>> getting the other issues resolved.
> > >>>
> > >>> Next issue I hit was an assertion failure after getting "not enough free
> > >>> space" message:
> > >>>
> > >>> not enough free space
> > >>> add_file_items failed
> > >>> unable to traverse_directory
> > >>> Making image is aborted.
> > >>> mkfs.btrfs: mkfs.c:1542: main: Assertion `!(ret)' failed.
> > >>>
> > >>> I am kind of stuck on this one, took it as far as I can right now.
> > >>> Would I be better off dropping back to 0.19 or can we move forward
> > >>> fixing this?
> > >>
> > >> Hi Saul,
> > >>
> > >> Update on my end, the problem is the image code expects every file to
> > >> fit inside a single chunk.  It's only creating 8MB chunks, so any file
> > >> over 8MB in size is causing problems.
> > >>
> > >> I'm fixing it up here, I should have a patch for you on Monday.
> > >>
> > > Any update on this?  Just curious.
> > >
> > > Thanks
> > >          Sau!
> > >
> > >> Thanks!
> > >>
> > >> -chris
> > >>
> > >> --
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