For container= and member= to be effective in an mdadm.conf line
they must both be present. So when checking for their absence we
need container != NULL || member != NULL.
Signed-off-by: NeilBrown <neilb@suse.de>
The line 'auto' in mdadm.conf can be used to disable assembly
of specific metadata types, or of all arrays.
This does not affect assembly of arrays listed in mdadm.conf
or on command line.
auto -all
will disable all auto-assembly.
auto -ddf
will cause mdadm to ignore ddf arrays that are not explicitly
mentioned, and auto assemble anything else it finds.
Signed-off-by: NeilBrown <neilb@suse.de>
Sometimes we want to ensure particular arrays are never
assembled automatically. This might include an array made of
devices that are shared between hosts.
To support this, allow ARRAY lines in mdadm.conf to use the word
"ignore" rather than a device name. Arrays which match such lines
are never automatically assembled (though they can still be assembled
by explicitly giving identification information on the mdadm command
line.
Signed-off-by: NeilBrown <neilb@suse.de>
Try to treat members of containers much like other arrays for
assembly.
We still look through the list of devices for a match (it will be
the container), then find the relevant 'info' and try to assemble
the array.
Signed-off-by: NeilBrown <neilb@suse.de>
Add anything that looks like a container in /proc/mdstat to the devlist
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
When mdadm.conf is automatically generated, we might not know a
suitable /dev/name. But we do know the uuid of the container.
So allow that as an option.
Signed-off-by: NeilBrown <neilb@suse.de>
i.e. in mdadm.conf you can have a line like
ARRAY uuid=whatever
and it will use auto-name-generation to give a name to the array at
assemble-time. The is different from blind auto-assembly in that the
array will be treated as 'local'.
Given an mdadm.conf like the following allow /dev/imsm and /dev/md/r1 to be
created by "mdadm -As".
DEVICES partitions
ARRAY /dev/imsm metadata=imsm auto=md UUID=b98f5dbe-aa859e7b-0e369b89-a80986d4
ARRAY /dev/md/r1 container=/dev/imsm member=0 auto=mdp UUID=3538e39c-b397c2e9-1aa031f9-2bc0eca4
spares=1
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Made the mistake of recompiling the F9 mdadm rpm which has a patch to
remove -Werror and add "-Wp,-D_FORTIFY_SOURCE -O2" which turns on lots
of errors:
config.c:568: warning: ignoring return value of asprintf
Assemble.c:411: warning: ignoring return value of asprintf
Assemble.c:413: warning: ignoring return value of asprintf
super0.c:549: warning: ignoring return value of posix_memalign
super0.c:742: warning: ignoring return value of posix_memalign
super0.c:812: warning: ignoring return value of posix_memalign
super1.c:692: warning: ignoring return value of posix_memalign
super1.c:1039: warning: ignoring return value of posix_memalign
super1.c:1155: warning: ignoring return value of posix_memalign
super-ddf.c:508: warning: ignoring return value of posix_memalign
super-ddf.c:645: warning: ignoring return value of posix_memalign
super-ddf.c:696: warning: ignoring return value of posix_memalign
super-ddf.c:715: warning: ignoring return value of posix_memalign
super-ddf.c:1476: warning: ignoring return value of posix_memalign
super-ddf.c:1603: warning: ignoring return value of posix_memalign
super-ddf.c:1614: warning: ignoring return value of posix_memalign
super-ddf.c:1842: warning: ignoring return value of posix_memalign
super-ddf.c:2013: warning: ignoring return value of posix_memalign
super-ddf.c:2140: warning: ignoring return value of write
super-ddf.c:2143: warning: ignoring return value of write
super-ddf.c:2147: warning: ignoring return value of write
super-ddf.c:2150: warning: ignoring return value of write
super-ddf.c:2162: warning: ignoring return value of write
super-ddf.c:2169: warning: ignoring return value of write
super-ddf.c:2172: warning: ignoring return value of write
super-ddf.c:2176: warning: ignoring return value of write
super-ddf.c:2181: warning: ignoring return value of write
super-ddf.c:2686: warning: ignoring return value of posix_memalign
super-ddf.c:2690: warning: ignoring return value of write
super-ddf.c:3070: warning: ignoring return value of posix_memalign
super-ddf.c:3254: warning: ignoring return value of posix_memalign
bitmap.c:128: warning: ignoring return value of posix_memalign
mdmon.c:94: warning: ignoring return value of write
mdmon.c:221: warning: ignoring return value of pipe
mdmon.c:327: warning: ignoring return value of write
mdmon.c:330: warning: ignoring return value of chdir
mdmon.c:335: warning: ignoring return value of dup
monitor.c:415: warning: rv may be used uninitialized in this function
...some of these like the write() ones are not so trivial so save those
fixes for the next patch.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Some kernel versions don't put a space between 'active' and '(auto-read-only)'
in /proc/mdstat. This causes a parsing problem leaving 'level' set to
NULL which causes a crash.
So synthesise a space there if it is missing, and check for 'level' to
be NULL and don't de-ref if it is.
sys/dir.h is an old BSD'ism, include dirent directly.
small step for better klibc support.
compile tested against glibc.
Signed-off-by: maximilian attems <max@stro.at>
Signed-off-by: Neil Brown <neilb@suse.de>
Have "#ifdef STATIC" in config.c, and the 'rmconf' target
was a mess.
Instead, create 'pwgr.c' with stub routines for those unavailable
when statically compiled, and include that in STATICOBJ
Signed-off-by: Neil Brown <neilb@suse.de>
So when you say auto=md or auto=part in mdadm.conf, it give a preference
for type of array, but standard name will override.
But --auto=md is more insistant.
FIXME I'm not at all happy about handling of names that already exist.
I don't think that should be removed if the device is active.
Signed-off-by: Neil Brown <neilb@suse.de>
This means the output of "mdadm -Es" can be used as a complete
mdadm.conf file .... if you really want to do that.
Signed-off-by: Neil Brown <neilb@suse.de>
A pending patch to the kernel causes bitmap file updates
to not go through the page cache, so O_DIRECT is needed to
ensure that we read current data.
Signed-off-by: Neil Brown <neilb@suse.de>
This includes:
adding --metadata= option to choose metadata format
adding metadata= word to config file.
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
NeilBrown
Dustin Kirkland
Dan Williams
maximilian attems