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52. By Serge Hallyn on 2010-10-19

Fix SCM failover bugs in manzanita:
1. multipathd expects uevents from kernel about /sys/block/sda. But
we are only getting them about /sys/devices/pci000:00/.../block/sda.
So we never add or remove devices that we should add based on
uevents.
2. Since we never see (or rather, never understand) the ACTION=remove
event for /dev/block/sda, but we have the device pinned, we never
end up unpinning it. So the kernel doesn't re-use sda when the
path shows back up. So we end up using funky-using paths like sdaa.
This looked for all the world like a kernel refcount problem, but
was actually a userspace bug. (We should have known based on the
fact that rollover stopped after multipathd crashed :)
Note that /sys/block/sda is always a symlink to the longer pathname.
This patch fixes this bug by accepting the uevents on the full block
/sys/ pathname. (LP: #660597)

51. By Serge Hallyn on 2010-10-18

swear i added this before

50. By Serge Hallyn on 2010-10-18

fix cl

49. By Serge Hallyn on 2010-10-18

set DEBUG=1 for sysfs.c - I'm hoping to see the full pathnames
resolved

48. By Serge Hallyn on 2010-10-18

fix patch

47. By Serge Hallyn on 2010-10-18

fix changelog

46. By Serge Hallyn on 2010-10-18

don't use sscanf - it seems broken here (?)

45. By Serge Hallyn on 2010-10-18

fix patch (compilation failures)

44. By Serge Hallyn on 2010-10-18

add missing file

43. By Serge Hallyn on 2010-10-18

debug the actual devpath contents