This patches enables raid5/single array Online Capacity Expansion using container operation.
I've decided to post smaller series to allow us for closer/adaptive work.
Main changes in code:
- metadata is reloaded between reshape_super() and reshape_array(), reshape_super() doesn't modify local anchor
- disk slot is set by md (index == -1), this propably has to be fixed in md
- suspend_lo has to be set to suspend_hi value after reshape to unblock array
- fixes
The main problems I can see:
- cannot add spare disks to container (add spare to raid0 works),
I've payed no attantion for it so far as I'm using workaround for tests: create container with bigger disks number before any array is created.
- adding disks to md with set index/slot should be fixed/investigated in md (for details look patches description)
- array cannot be opened excl. in reshape_array()
As I've put information in patch, it is possible caused by mdmon, I cannot see double array open operation in mdadm.
On mdadm begin open_dev_excl() is possible.
BR
Adam
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Adam Kwolek (13):
FIX: Fill sys_name for disk add
FIX: parity disks use for redundant levels only
FIX/WORKAROUND: Arrays cannot be opened exclusively
FIX: Cannot unmount array after reshape
Finalize reshape after adding disks to array
FIX/WORKAROUND: added disks are not used by reshape process /md/
FIX: wrong flags are passed to function
imsm: FIX: update disks status in container_contents()
msm: FIX: when mdadm reloads anchor not need for local modyfication
FIX: load anchor to get all information
imsm: FIX: when monitor is active post update
imsm: FIX: allow for container reshape any unset size value
Manage reshape process in manage_reshape vector.
Grow.c | 29 +++++++++++++++++++++--------
monitor.c | 11 +++++++++++
super-intel.c | 30 +++++++++++++-----------------
3 files changed, 45 insertions(+), 25 deletions(-)
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