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The specific config settings have been removed
from the lvm.conf(5) man page, and replaced with
a description of how to use lvm dumpconfig to
view the settings.
The sample lvm.conf and lvmlocal.conf files are now generated:
example.conf.base - initial ungenerated part of the file
example.conf.gen - generated portion from dumpconfig
example.conf.in - combination of .base and .gen files
example.conf - result of configure processing .in file
lvmlocal.conf.base - initial ungenerated part of the file
lvmlocal.conf.gen - generated portion from dumpconfig
lvmlocal.conf.in - combination of .base and .gen files
lvmlocal.conf - result of configure processing .in file
Do not edit the .in files, but edit config_settings.h
or the .base files, and then use 'make generate' to create
the new .in files.
- configure
with options
- make
creates tools/lvm
- make generate
uses tools/lvm to create example.conf.in and lvmlocal.conf.in
by combining .base files with dumpconfig output.
- configure
with same options as above
creates example.conf and lvmlocal.conf from .in files
Use builddir not srcdir with make pofile.
Append 'incfile:' lines to %.d files to handle newly-missing dependencies
without 'make clean' after a file is moved or deleted.
This breaks brew/koji as DESTDIR should not be contained in any file and
results in message like:
+ /usr/lib/rpm/check-buildroot
/builddir/build/BUILDROOT/lvm2-2.02.106-0.311.el7.x86_64/usr/share/man/man8/lvm2-activation-generator.8:.B /builddir/build/BUILDROOT/lvm2-2.02.106-0.311.el7.x86_64/usr/lib/systemd/system-generators/lvm2-activation-generator
Found '/builddir/build/BUILDROOT/lvm2-2.02.106-0.311.el7.x86_64' in installed files; aborting
error: Bad exit status from /var/tmp/rpm-tmp.UfX2SX (%install)
The commit splits original clvmd service in two new native services
for systemd enabled systems while original init scripts remain unaltered.
New systemd native services:
1) clvmd daemon itself (lvm2_clvmd_red_hat.service.in)
2) (de)activation of clustered VGs (lvm2_cluster_activation_red_hat.service.in)
There're several reasons to split it. First, there's no support for conditional
stop in systemd and AFAIK they don't plan to support it. In other words:
if the deactivation fails for some reason, systemd doesn't care and will simply
kill all remaining processes in original cgroup (by default). Killing the
remaining procs can be suppressed however it doesn't solve the following problem:
You can't repeat the stop command of a failed service. The repeated stop command
is simply not propagated to the service in a failed state. You would have to start
and then try to stop the service again. Unfortunately, this can't be done while
the daemon is still running (and we need the daemon to stay active until all
clustered VGs are deactivated properly).
In a separated setup we need only to restart the failed activation service and
that's fine.
The PIE and RELRO compiler/linker options can be used to produce a code
some techniques applied that makes the code more immune to some attacks:
- PIE (Position Independent Executable). It can make use of the ASLR
(Address Space Layout Randomization) provided by kernel to avoid
static locations for .text regions of executables (this is the 'pie'
compiler and linker option)
- RELRO (Relocation Read-Only). This prevents overwrite attacks of
the GOT (Global Offset Table) and PLT (Procedure Lookup Table)
used for relocations by making it read-only after all relocations
are resolved (these are the 'relro' and 'now' linker options) -
hence all symbols are resolved at the very start so there's no
need for those tables to be writeable later.
These compiler/linker options are now used by default for daemons
if the compiler/linker supports it.
In the case we have a dir with multiple objects and for
an individual object file we need special define -
allow to define it without adding extra rules.
To ensure dmeventd.o compilation will use EXTRA_FLAGS:
CFLAGS_dmeventd.o += $(EXTRA_FLAGS)
Then it's better to use:
dmeventd.o: CFLAGS += $(EXTRA_FLAGS)
Use configure --enable-python_bindings to generate them.
Note that the Makefiles do not yet control the owner or permissions of
the two new files on installation.
Add make help target.
Add LVM_TEST_PARALLEL to support parallel runs of tests
Work around the problem the dmsetup table/info may return error
by using dmtable and dminfo function that will use 'should'.
(Error happens when some concurently running process removes table
entry while dmsetup command resolves table entries inside the loop.)
/etc/tmpfiles.d directory holds configuration files for temporary/volatile
files and directories that should be automatically managed. For example,
if we have some parts of the fs hierarchy on tmpfs, we'd like to recreate
some files or directories on every boot so they're always prepared for use.
Systemd can read such configuration files. For now, the lock and run directory
are the ones that are most probably placed on tmpfs. If this is the case, we
can install the configuration by 'make install_tmpfiles_configuration'.
Use gcc warning options only for .c -> .o compilation
So it makes the output more clear.
Do not use INCLUDES and DEFS for .o -> .so.
Do not use CFLAGS for deps .d generation.
udev may also need to be disabled if you didn't build it statically too.
dmeventd.static could be fixed with some more work but I don't really see the
point: without dlopen() it's useless, and if you have dlopen(), why not support
normal shared libraries too?
