Hi Neil,
This update allows imsm containers and member arrays to be discovered
with '-Eb' and subsequently assembled with '-As'.
For example here is a test for assembling a 4 drive container with (1)
4-disk raid5 array plus one spare.
# echo "DEVICES /dev/loop[0-4]" > tmp/mdadm.conf
# mdadm -Ebsc tmp/mdadm.conf >> tmp/mdadm.conf
# cat tmp/mdadm.conf
DEVICES /dev/loop[0-4]
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
# mdadm -Asvc tmp/mdadm.conf
mdadm: looking for devices for /dev/imsm
mdadm: /dev/loop4 is identified as a member of /dev/imsm, slot -1.
mdadm: /dev/loop3 is identified as a member of /dev/imsm, slot -1.
mdadm: /dev/loop2 is identified as a member of /dev/imsm, slot -1.
mdadm: /dev/loop1 is identified as a member of /dev/imsm, slot -1.
mdadm: /dev/loop0 is identified as a member of /dev/imsm, slot -1.
mdadm: added /dev/loop3 to /dev/imsm as -1
mdadm: added /dev/loop2 to /dev/imsm as -1
mdadm: added /dev/loop1 to /dev/imsm as -1
mdadm: added /dev/loop0 to /dev/imsm as -1
mdadm: added /dev/loop4 to /dev/imsm as -1
mdadm: Container /dev/imsm has been assembled with 5 drives
mdadm: looking to assemble member array 0 inside container /dev/imsm
mdadm: match found for member 0
I suppose brief_examine_super_imsm() can be updated to look at the
currently running kernel and not specify auto=mdp if the "extended
partition" capability is available. Is there a quick way to check for
this capability? You can see that I tagged this support as
"preliminary" as it does not attempt to address the multiple container
case, I left it alone for now as that solution depends on the device
name rework.
Please have a look.
Thanks,
Dan
The following changes since commit b01b06bda8dce132e6eb3c3826ad0f4b94ebdf43:
NeilBrown (1):
Merge branch 'master' into devel-3.0
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/mdadm.git devel
Dan Williams (7):
update copyright headers
imsm: update metadata immediately on "add spare" events
Examine: fix MD_DISK_SYNC is a bit not a flag
imsm: return associated uuid for spares
imsm: copy raid device info when associating spares
imsm: include members in ->brief_examine
Preliminary -As support for container member arrays
Assemble.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
Examine.c | 2 +-
Incremental.c | 6 ++++++
config.c | 2 ++
managemon.c | 19 +++++++++++++++++++
mdadm.h | 1 +
mdmon.c | 28 +++++++++++++++++++---------
mdmon.h | 20 ++++++++++++++++++++
monitor.c | 19 +++++++++++++++++++
sg_io.c | 2 +-
super-intel.c | 53 ++++++++++++++++++++++++++++++++++++++++++++---------
util.c | 9 +++++++++
12 files changed, 187 insertions(+), 20 deletions(-)
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