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--incremental currently fails if the device name passed does not
textually match the names permitted by the DEVICE line in mdadm.conf.
This is problematic when "mdadm -I" is run by udev as the name given
can be a temp name.
This patch makes two improvements:
1/ We generate a list of all existing devices that match the names
in mdadm.conf, and allow rdev based matching
2/ We allows extra aliases to be provided on the command line, and
perform textual matching on those. This is particularly suitable
for udev usages as ${DEVLINKS} can be provided even though the links
make not yet be created.
Signed-off-by: NeilBrown <neilb@suse.de>
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Normally "mdadm -I" will not start an array if it has reason to
expect further devices.
This means that if a device is removed while the host is shut down,
"mdadm -I" will never start the device.
If the array is know to the host, it make sense to start the array
anyway after a reasonable timeout.
This patch adds systemd/udev infrastructure so that 30 seconds after
a known array first becomes able to be assembled as a degraded array,
the array will be assembled even if more devices are still expected.
Signed-off-by: NeilBrown <neilb@suse.de>
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Right now, the rules that run blkid on raid arrays are executed after
the assembly rules. This means incremental assembly will always fail
when raid arrays are again physical components of raid arrays.
Instead of simply reversing the order, split the rules up into two files,
one dealing with array properties and one dealing with assembly.
Signed-off-by: NeilBrown <neilb@suse.de>
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