Systemd's btrfs rule runs btrfs dev ready on each device
as it's discovered. The btrfs command is executed as a builtin
command via an IMPORT{builtin} rule, which means it gets
executed at rule evaluation time, not rule execution time. That
means that the device mapper links haven't been setup yet and the only
nodes that can be depended upon are /dev/dm-#. That we see
/dev/mapper/name names in /proc/mounts is only because we replace the
device name we have cached with the one passed in via mount. If
we have a multi-device file system and the primary device is removed,
the remaining devices will show /dev/dm-#. In addition, if the
udev rule is executed again by someone generating a change event (e.g.
partprobe), the names are also replaced by the /dev/dm-# names.
This patch adds a new rule that adds a run rule that calls btrfs dev
ready again using the device mapper links once they're created.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
$ make clean
$ make btrfs-debug-tree
will fail because the dependency from $(btrfs_debug_tree_objects) is
missing. The variable standalone_deps magically collects all the deps
and will build them in advance. The simple fix to use the existing
substitution based on $@ does not work for pattern rules, as Noah found
out.
Reported-by: Noah Massey <noah.massey@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
commit b5e7979 "btrfs-progs: build: extend per-binary objects" allows
the standalone utilities to link against object files shared with the
main binary. However, the btrfs-*.static targets need to be adjusted
to build against the static versions of the common files.
Signed-off-by: Noah Massey <noah.massey@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
'btrfs du' differs from regular du in that it will work to resolve which
blocks are shared between files in its list. This gives the user a more
accurate bytecount from which they can make decisions regarding management
of their file space.
We still print a total number of bytes counted (like regular du), but also
print the number of bytes which were found to have been shared amongst the
file set provided. From there it becomes trivial to calculate how much space
is exclusively owned.
Signed-off-by: Mark Fasheh <mfasheh@suse.de>
[ rename files to reflect the filesystem command group, add GPL v2
file headers ]
Signed-off-by: David Sterba <dsterba@suse.com>
The standalone utilities could share object files with the main utility,
add a way to specify additional object files in a similar way to the
extra libs. The variable name must match the binary plus _objects
suffix and s/-/_/ .
Signed-off-by: David Sterba <dsterba@suse.com>
The long-term plan is to merge the features of standalone tools
into the btrfs binary, reducing the number of shipped binaries.
Signed-off-by: Alexander Fougner <fougner89@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
The long-term plan is to merge the features of standalone tools
into the btrfs binary, reducing the number of shipped binaries.
Signed-off-by: Alexander Fougner <fougner89@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
install -D does not create the last component, so this failed if
$(DESTDIR)$(bindir) did not already exist.
There's no need for a loop here since install accepts multiple source
arguments.
Signed-off-by: Mike Gilbert <floppym@gentoo.org>
Signed-off-by: David Sterba <dsterba@suse.com>
Change in "btrfs-progs: introduce helper for parsing args without
options" added a dependency on help.o that was duplicated for the static
build.
Signed-off-by: Noah Massey <noah.massey@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
All commands should support the "--" option separator. This is
transparently handled by getopt, but we don't use that everywhere.
Introduce a helper for commands that take no options (just the path).
The object file dependencies need to be adjusted a bit.
Signed-off-by: David Sterba <dsterba@suse.com>
This reuses the existing code for checking the free space cache, we just
need to load the free space tree. While we do that, we check a couple of
invariants on the free space tree itself. This requires pulling in some
code from the kernel to exclude the super stripes.
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
When I run sparse checking it gives the following error:
$ make C=1 V=1
gcc -MM -MG -MF cmds-fi-usage.o.d -MT cmds-fi-usage.o -MT \
cmds-fi-usage.static.o -MT cmds-fi-usage.o.d -g -O1 -Wall \
-D_FORTIFY_SOURCE=2 -include config.h -DBTRFS_FLAT_INCLUDES \
-D_XOPEN_SOURCE=700 -fno-strict-aliasing -fPIC cmds-fi-usage.c
[SP] ctree.c
sparse -g -O1 -Wall -D_FORTIFY_SOURCE=2 -include config.h \
-DBTRFS_FLAT_INCLUDES -D_XOPEN_SOURCE=700 -fno-strict-aliasing -fPIC \
-include -D__CHECKER__ -D__CHECK_ENDIAN__ -Wbitwise -Wuninitialized \
-Wshadow -Wundef -U_FORTIFY_SOURCE ctree.c
builtin:1:15: error: unable to open '-D__CHECKER__'
Makefile:177: recipe for target 'ctree.o' failed
make: *** [ctree.o] Error 1
It means '$(check_defs)' is passed to sparse as NULL and looks
'$(check_defs)'should be assigned before assigning '$(CHECKER_FLAGS)'.
BTW, I'm not familiar with make tool so there could be some my
misunderstanding and better solution.
Signed-off-by: Byongho Lee <bhlee.kernel@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Copied from linux kernel, 'make W=1' will build with various additional
warnings turned on. There are 3 levels, combinations are possible. The
build is quite noisy, not all warnings need to be fixed.
A specific warning can be turned on by 'make EXTRA_CFLAGS=-Wsomething'.
Signed-off-by: David Sterba <dsterba@suse.com>
In newer distros (ubuntu 15.10, fedora rawhide) the binutils
ar uses the new D flag per default to build deterministic
binaries.
Without this patch the following warning is issued, when
building btrfs-progs:
[AR] libbtrfs.a
/usr/bin/ar: `u' modifier ignored since `D' is the default (see `U')
For libtrfs.a performance benefit of the u option can be neglected,
so drop the u option and silence the warning.
In the future one might want to explicitly add the D option anyway.
Signed-off-by: Arnd Hannemann <arnd@arndnet.de>
Signed-off-by: David Sterba <dsterba@suse.com>
Allow fine tuned build options via EXTRA_CFLAGS and EXTRA_LDFLAGS
variables. Useful for additional debugging flags or warnings etc.
Signed-off-by: David Sterba <dsterba@suse.com>
We'd like to run each class of tests separately. There were some missing
prerequisities that should be/are verified by the tests, makefile rules
have been synced.
Signed-off-by: David Sterba <dsterba@suse.cz>
Same thing as clang cleanup patch commit 040b3f11ba
"btrfs-progs: Makefile: Move linker only option to LDFLAGS"
But the move to autoconfig seems using old Makefile.
So do it again.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Introduce new find-root.[ch] infrastructure which has better tree root
judgment and uses much less codes to do it.
The new infrastructure will only record tree blocks with highest level
among its generation, and do better judgment whether the found tree block
is the desired one(level + generation check other than the original
generation only check).
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Commit 878affd47d ("btrfs-progs: build more utilities by default")
resulted in installation of new utilities, that were not installed
before. Make them build but do not install them.
Signed-off-by: David Sterba <dsterba@suse.cz>
Keep only flags that are required to build properly, current fine
tunings are moved to the optional defaults in configure and can be
overriden by the user.
Signed-off-by: David Sterba <dsterba@suse.cz>
Commit 2c2e6c4e12 ("btrfs-progs: autoconf: cleanup compilation
flags usage") added the shared library to the linking command so the
resulting binaries depend dependent on libbtrfs.so. This is not
intended.
Reported-by: WorMzy Tykashi <wormzy.tykashi@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
The installed symlink points to the absolute path of btrfs,
a relative link is enough.
Reported-by: WorMzy Tykashi <wormzy.tykashi@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Lost in the conversion and breaks the build unless set explicitly.
Reported-by: WorMzy Tykashi <wormzy.tykashi@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Add btrfs_get_extent() and btrfs_punch_hole() for btrfs-progs.
Btrfs_get_extent() will act much like kernel one, return the first
extent that covers the given range.
The difference will be that progs btrfs_get_extent() can't handle
no-holes feature, which means caller should handle it carefully.
Btrfs_punch_hole() will punch a hole in given range of given inode,
however it differs from kernel one since it won't zero any page or drop
any extents if there is any extent in the hole range.
These functions are mainly used for later I_ERR_FILE_EXTENT_DISCOUNT
repair function.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
- add rule to generated version.h when any relevant stuff changed
- add rule to clean generated files on "make clean-all"
Signed-off-by: Karel Zak <kzak@redhat.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
- define basic default CFLAGS in configure.ac, because:
* autoconf default is -g -O2, but btrfs uses -g -O1
* it's better to follow autoconf; standard way to modify
CFLAGS is to call: CFLAGS="foo bar" ./configure
- move all flags to one place in Makefile.in
- don't use AM_CFLAGS, the CFLAGS and STATIC_CFLAGS are enough
- don't mix objects and flags in $LIBS, it's more readable to
add $(libs) to make rules
Signed-off-by: Karel Zak <kzak@redhat.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Jeff Mahoney