If we will need to change array level when a reshape completes, a copy
of mdadm waits in the background.
Currently this copy hold the device (/dev/mdX) open. This prevents
the array from being stopped.
So close the file descriptor and re-open after the reshape completes.
Signed-off-by: NeilBrown <neilb@suse.de>
The "data_size" is with respect to "data_offset". When the kernel
changes "data_offset" it modifies "data_size" to match - see
md_finish_reshape() in the kernel.
So when mdadm switches the data_offset for the new data_offset, it
must update data_size correspondingly.
Signed-off-by: NeilBrown <neilb@suse.de>
Let the first created array be RAID5 rather than RAID0. This makes
the test harder than before, because everything after the first
Create has do be done indirectly through mdmon.
Signed-off-by: NeilBrown <neilb@suse.de>
Fix a bug that caused the wrong conf record to be used to derive
data offset and size on secondary RAID (RAID10).
Signed-off-by: NeilBrown <neilb@suse.de>
Factor out single disk from __write_init_super_ddf to a new function
_write_super_to_disk. Use this function in store_super_ddf.
Signed-off-by: NeilBrown <neilb@suse.de>
Increase seq number only when there's actually a metadata change.
This is better then increasing it at every write.
This also fixes another endianness bug.
Signed-off-by: NeilBrown <neilb@suse.de>
This was waiting on "reshape_position" which doesn't
get update events.
Before sysfs_wait was introduced, the code to wait didn't
wait at all, so it spun.
With sysfs_wait, it would wait forever.
Change to wait in sync_completed which does get events.
Signed-off-by: NeilBrown <neilb@suse.de>
* Aligned the spelling of “RAID” to use captial letters in all places.
* Aligned the spelling of the RAID level names (LINEAR, RAID1, …) to use capital
letters in all places, except for the string “faulty” in places where not the
RAID level was meant.
Signed-off-by: Christoph Anton Mitterer <mail@christoph.anton.mitterer.name>
If we stop too soon after reshape starts (probably only during
testing), we can get confused by the status of the reshape.
If that might be happening - sleep a bit longer.
Also allow for reshape going unusually slowly (again, probably only
during testing).
Signed-off-by: NeilBrown <neilb@suse.de>
Having a fix time for a wait is clumsy and can make us
wait much too long.
So use mdstat_wait and keep the mdstat_fd open.
This requires an 'mdstat_close' so it doesn't stay open
forever.
Signed-off-by: NeilBrown <neilb@suse.de>
We only need 'hold' if we want to mdstat_wait for a change.
These two callers don't care about a change, so they shouldn't
use the 'hold' flag.
Signed-off-by: NeilBrown <neilb@suse.de>
Currently we compare fields between primary and secondary
superblocks, before we check if the primary is even valid.
This is a bit backwards, so reverse it.
Signed-off-by: NeilBrown <neilb@suse.de>
The "indirect" code path for adding VDs was not working correctly
for secondary RAID level. The "other BVDs" were not transmitted
to mdmon. Thus mdmon wouldn't build up correct information, and
RAID creation would fail when mdmon was already running on the container.
This patch fixes this.
Signed-off-by: NeilBrown <neilb@suse.de>
The return value of disk.raid_disk may be wrong.
The old code was using raiddisk, which is only valid with auto
layout. This leads to errors when arrays are created with
specified disks and mdmon is already running, like this:
mdadm -CR /dev/md/container -n5 $d1 $d2 $d3 $d4 $d5
mdadm -CR /dev/md/r5 -n5 -l5 /dev/md/container -z 5000
mdadm -CR /dev/md/r1 -n2 -l1 $d1 $d2
=> resulting array will use wrong disks
This patch fixes that.
Signed-off-by: NeilBrown <neilb@suse.de>
Use refnum rather than raiddisk for identifying the physical disk.
raiddisk should only be used for auto-layout.
Signed-off-by: NeilBrown <neilb@suse.de>
Implement kill_subarray, for mdmon running and not running.
The way Kill_subarray() is implemented, this requires that the
DDF layer uses "currentconf" to remember the last subarray
queried with container_content(), and use it as the one to kill.
I don't like this much but IMSM does it the same way.
Signed-off-by: NeilBrown <neilb@suse.de>
commit d682f344 inserted this call to "Kill" in write_init_super_ddf:
"Matching the functionality already in super0 and super1, when
we first create a container, remove any other recognisable metadata to
ensure it doesn't cause confusion."
But we should do this only at first container creation, not when
subarrays are created later.
Signed-off-by: NeilBrown <neilb@suse.de>
The kernel docs state that meta data is never written in states
clear, inactive, suspended, readonly, and read_auto.
Why should this be different for containers?
We need to write metadata when the array is disabled, though.
Tested with the DDF (10*) and IMSM (9*) tests, works.
Signed-off-by: NeilBrown <neilb@suse.de>
This patch adds RAID10 support to the DDF test script.
It actually passes!
Signed-off-by: Martin Wilck <mwilck@arcor.de>
Signed-off-by: NeilBrown <neilb@suse.de>
With secondary RAID level, disks may belong to other BVDs in
a given conf record. This needs to be taken into account
when fixing the vlist.
Signed-off-by: Martin Wilck <mwilck@arcor.de>
Signed-off-by: NeilBrown <neilb@suse.de>
For secondary RAID, we need to check which BVD needs to be updated.
Signed-off-by: Martin Wilck <mwilck@arcor.de>
Signed-off-by: NeilBrown <neilb@suse.de>
For debugging DDF structure changes, it is important to be able
to identify VCs by their GUIDs.
Signed-off-by: Martin Wilck <mwilck@arcor.de>
Signed-off-by: NeilBrown <neilb@suse.de>
If there are already disks in the container, reserve the same amount
of workspace as the first disk. Fill in the primary/secondary/
workspace LBA values.
Signed-off-by: Martin Wilck <mwilck@arcor.de>
Signed-off-by: NeilBrown <neilb@suse.de>
The used slots in the phys disk table aren't necessarily the
first ones. Rather, unused entries are represented by entries
where the GUID is all 0xff.
Signed-off-by: Martin Wilck <mwilck@arcor.de>
Signed-off-by: NeilBrown <neilb@suse.de>
Use get_pd_index_from_refnum() in get_extents to determine
matching VD. This will ensure RAID 10 (secondary RAID level)
support, too.
This also fixes a bug in the previous get_extents() code (missing
__be16_to_cpu for conf.prim_elmnt_count).
DDF test case (10ddf-create) verified.
Signed-off-by: Martin Wilck <mwilck@arcor.de>
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown
mwilck@arcor.de
Christoph Anton Mitterer