image up to.
From ticket:
While trying to run FreeBSD/mips on some device having very small flash media,
one is forced to compress file system with mkulzma(8) utility. It is desirable
to specify small UFS block/fragment sizes like 4096/512 bytes for makefs(8)
and big compression block size like 65535 bytes to mkulzma at the same time.
Then one obtains very good comression ratios (like 75% and more) but faces
the following problem.
geom_uncompress kernel module reports GEOM provider size rounded up to its
compression block size. Generally, this changes original media size and now
it fails to match the size of embedded UFS file system that leads to other
problems, f.e. geom_label kernel module does not like this and skips the
file system while tasting the GEOM and looking for UFS label.
This makes it impossible to refer to the file system using known UFS label
instead of something like /dev/map/rootfs.uncompress.
The following patch introduces new command line option "-r roundup" for makefs
that makes it round up the image to specified block size. Hence, geom_uncompress
does not change GEOM media size for images rounded that way and geom_label
accepts such GEOMs just fine.
With the patch applied, one can use following commands:
$ makefs -t ffs -r 65536 -o bsize=4096,fsize=512,label=flash optimization=space fs.img fs
$ mkulzma -s 65536 -o fs.img.ulzma fs.img
PR: bin/203707
Submitted by: <eugen@grosbein.net>
the minimum image size specified is always less than the maximum
image size. If makefs(1) is invoked specifying minimum image size,
but not maximum one, the program exits with an error. Example:
# sudo -E makefs -M 538968064 -B be /home/davide/disk.img $DESTDIR
makefs: `/home/davide/tftproot/mips' minsize of 538968064 rounded up
to ffs bsize of 8192 exceeds maxsize 0. Lower bsize, or round the
minimum and maximum sizes to bsize.
Assert then that minsize < maxsize iff maxsize is specified.
This change allows me to build MIPS images using makefs(1) and following
what specified in the wiki again.
Reviewed by: jmallett, ngie
would exceed the maximum size. This can be a difficult problem to diagnose
if one is, for instance, using -s with a fixed size in a script and the bsize
calculated for a filesystem image changes, necessitating a re-rounding of the
image size or a hand-setting of the bsize. Previously one would get a
cryptic message about how the size exceeded the maximum size, which normally
only happens if the contents of the image are larger than specified.
to be created. The support is based on mtree version 2.0, as used
in libarchive, but adds new features on top of it.
The current implementation is fully functional, but is envisioned
to grow at least the following additional features over time:
o Add support for the /include special command so that manifest
files can be constructed using includable fragments.
o Add support specifying a search path to locate content files.
o Content file filters: commands that provide file contents on
stdout.
The manifest file eliminates the need to first construct a tree
as root in order to create an image and allows images (releases)
to be created directly from object trees and/or source trees.
Reviewed by: deo
Sponsored by: Juniper Networks, Inc
include sys/time.h instead of time.h. This include is incorrect as
per the manpages for the APIs and the POSIX definitions. This commit
replaces sys/time.h where necessary with time.h.
The commit also includes some minor style(9) header fixup in newfs.
This commit is part of a larger effort by Garrett Cooper started in
//depot/user/gcooper/posix-conformance-work/ -- to make FreeBSD more
POSIX compliant.
Submitted by: Garrett Cooper yanegomi at gmail dot com
