svn commit: r190006 - in stable/7/usr.sbin: . makefs

Jaakko Heinonen jh at saunalahti.fi
Mon Mar 23 09:01:54 PDT 2009


On 2009-03-19, Sam Leffler wrote:
> Log:
>   MFC makefs: a tool for creating a file system image from a directory tree

FYI, images created with sector size (-S option) other than 512 don't
work on FreeBSD. (PR 131341)

Sector size affects to the value of the fs_fsbtodb super block field.
Looks like FreeBSD ffs requires that it's always calculated with
DEV_BSIZE (512). newfs(8) sets the sector size to DEV_BSIZE before
calculating fs_fsbtodb (however the code is marked with XXX).

Here is a workaround to recalculate fs_fsbtodb at mount time if it's not
based on DEV_BSIZE:

http://www.saunalahti.fi/~jh3/patches/ffs-fs_fsbtodb.diff

-- 
Jaakko


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