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The purpose od devid2devnm is to return a kernel name of an
md device, whether that device is a whole device or a partition,
we want the whole device. md4, never md4p2.
In one place I was using devid2devnm where I really wanted the
partition if there was one ... and wasn't really interested in it
being an md device.
So introduce a new 'devid2kname' for that case.
Signed-off-by: NeilBrown <neilb@suse.de>
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As they are uses for mdstat as well as mdadm.conf, they don't really
belong in conf.c
This removes a dependency between mdmon and conf.c
Signed-off-by: NeilBrown <neilb@suse.de>
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To be able to revert-reshape of raid4/5/6 which is changing
the number of devices, the reshape must has been stopped on a multiple
of the old and new stripe sizes.
The kernel only enforces the new stripe size multiple.
So we enforce the old-stripe-size multiple by careful use of
"sync_max" and monitoring "reshape_position".
Signed-off-by: NeilBrown <neilb@suse.de>
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Now that I am using white-space mode in Emacs I can see all of this,
and I don't like it :-)
Signed-off-by: NeilBrown <neilb@suse.de>
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After recent git pull 'make raid6check' did not work anymore, as
sysfs_read() was called with a wrong argument and as check_env()
was used by use_udev(), but not defined.
Replace sysfs_read(..., -1, ...) by sysfs_read(..., NULL, ...)
Move check_env() from util.c to lib.c
Signed-off-by: Bernd Schubert <bernd.schubert@itwm.fraunhofer.de>
Signed-off-by: NeilBrown <neilb@suse.de>
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We widely use a "devnum" which is 0 or +ve for md%d devices
and -ve for md_d%d devices.
But I want to be able to use md_%s device names.
So get rid of devnum (a number) and use devnm (a 32char string).
eg.
md0
md_d2
md_home
Signed-off-by: NeilBrown <neilb@suse.de>
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map_dev can be slow so it is best to not call it when
not necessary.
The final test in "find_free_devnum" is not relevant when
udev is being used, so remove the test in that case.
Signed-off-by: NeilBrown <neilb@suse.de>
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Signed-off-by: NeilBrown <neilb@suse.de>
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1/ When printing the "name=" entry for --brief output,
enclose name in quotes if it contains spaces etc.
Quotes are already supported for reading mdadm.conf
2/ When a name is used as a device name, translate spaces
and tabs to '_', as well as the current translation of
'/' to '-'.
Signed-off-by: NeilBrown <neilb@suse.de>
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malloc should never fail, and if it does it is unlikely
that anything else useful can be done. Best approach is to
abort and let some super-daemon restart.
So define xmalloc, xcalloc, xrealloc, xstrdup which don't
fail but just print a message and exit. Then use those
removing all the tests for failure.
Also replace all "malloc;memset" sequences with 'xcalloc'.
Signed-off-by: NeilBrown <neilb@suse.de>
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Both --detail and --monitor can report the names of member
devices on an array, and do so by searching /dev and finding
the shortest name that matches.
If
--prefer=foo
is given, they will instead prefer a name that contain /foo/.
So
mdadm --detail /dev/md0 --prefer=by-path
will list the component devices via their /dev/disk/by-path/xxx
names.
Signed-off-by: NeilBrown <neilb@suse.de>
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Some of util.c is dependent on lots of other code, some of it
is stand-alone.
Move some of the stand-alone stuff into a new lib.c so it can be used
by smaller utilities.
Signed-off-by: NeilBrown <neilb@suse.de>
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