If it is a cluster raid, the disc.state need to be
changed accordingly when do re-add.
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: NeilBrown <neilb@suse.com>
When parse_cluster_confirm_arg return 0, it means the
arg are parsed successfully, so change !rv to rv.
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: NeilBrown <neilb@suse.com>
If the array is reshaping to more devices, then stopping
during that initial critical section is a bad idea.
So check for it and wait a bit.
Should probably handle final critical section of a reduction
too.
same-size reshape should be handled correctly already.
Signed-off-by: NeilBrown <neilb@suse.de>
A race can allow 'completed' to read as 2^63-1, which takes
a long time to count up to.
So guard against that possibility.
Signed-off-by: NeilBrown <neilb@suse.com>
A 'devnm' never starts with '/', so this test is pointless.
The code should use the passed-in devname unless it is clearly
not usable. So fix it to do that.
Signed-off-by: NeilBrown <neilb@suse.de>
These both have the same value, and have done since the
'devnm' concept was introduced.
So discard the pointless duplicate.
Signed-off-by: NeilBrown <neilb@suse.de>
A clustered disk is added by the traditional --add sequence.
However, other nodes need to acknowledge that they can "see"
the device. This is done by --cluster-confirm:
--cluster-confirm SLOTNUM:/dev/whatever (if disk is found)
or
--cluster-confirm SLOTNUM:missing (if disk is not found)
The node initiating the --add, has the disk state tagged with
MD_DISK_CLUSTER_ADD and the one confirming tag the disk with
MD_DISK_CANDIDATE.
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: NeilBrown <neilb@suse.de>
avail_size1 requires ->sb, so we must only call it if ->sb
was loaded.
If ->sb wasn't loaded, then we are only proceding on the basis that
the kernel might be able to work something out - we don't need to
do any tests on size.
Reported-by: Christoffer Hammarström <christoffer.hammarstrom@linuxgods.com>
Signed-off-by: NeilBrown <neilb@suse.de>
URL: https://bugs.debian.org/784874
We 'active_disks' does not count spares, so if array is rebuilding,
this will not necessarily find all devices, so may report an array
as failed when it isn't.
Counting up to nr_disks is better.
Signed-off-by: NeilBrown <neilb@suse.de>
It is best to keep strings all together so that they
are easier to search for in the source code.
If a string is so long that it looks ugly one line,
them maybe it should be broken into multiple lines
for display too.
Only strings which contain a newline can be broken
into multiple lines:
"It is OK to\n"
"break this string\n"
Signed-off-by: NeilBrown <neilb@suse.de>
"--remove detached" and others stopped working a while
back when I refactored some code.
For 'remove' and 'fail', the device may not exist so
if it is "MM:mm", (e.g. added by "detached"), just parse
out the numbers.
Reported-by: Killian De Volder <killian.de.volder@megasoft.be>
Signed-off-by: NeilBrown <neilb@suse.de>
The only use 'struct stat stb' to get the 'rdev', and sometimes
we don't even use 'stat'.
So make 'rdev' a stand-alone variable, and only declare stb'
when we actually need it.
Signed-off-by: NeilBrown <neilb@suse.de>
1/ enough_fd doesn't use avail_disks any more, so discard it.
2/ Manage_Add increments 'found' at the wrong place, so it can
waste time before calling enough().
Signed-off-by: NeilBrown <neilb@suse.de>
--add-spare is like --add, but a --re-add is never attempted.
So it is equivalent to two separate commands:
--zero-metadata
--add
Signed-off-by: NeilBrown <neilb@suse.de>
We really need to make sure assemble_container_content()
gets called to finished the assembly of these.
Reported-by: Francis Moreau <francis.moro@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Current "mdadm --run /dev/mdX" will not handle external metadata
properly. mdmon won't be started etc.
So use the code from "mdadm -IRs" instead - that already does all
the right things.
Reported-by: Francis Moreau <francis.moro@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This call to validate_geometry is really rather gratuitous.
It is purely about the fact that super0 cannot use more than 4TB.
So just make it an explicit test - less confusing that way.
With this, validate_geometry is only called from Create, which
makes it easier to reason about.
Also validate_geometry is now never passed NULL for the 'chunk'
parameter, so we can remove those annoying tests for NULL.
Signed-off-by: NeilBrown <neilb@suse.de>
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>
It is possible for 'sync_completed' to be further ahead than
we deduced from 'reshape_position'. However we cannot read it while
the array is frozen, so it is hard to know.
Once that array is unfrozen, check and if sync_completed is ahead of
'sync_max', push 'sync_max' well ahead if 'sync_completed' so it
will all synchronise up properly.
Signed-off-by: NeilBrown <neilb@suse.de>
To be able to revert-reshape of raid4/5/6 which is changing
the number of devices, the reshape must has been stopped on a multiple
of the old and new stripe sizes.
The kernel only enforces the new stripe size multiple.
So we enforce the old-stripe-size multiple by careful use of
"sync_max" and monitoring "reshape_position".
Signed-off-by: NeilBrown <neilb@suse.de>
Manage_runstop has an open-coded version of use_udev() which is no
longer correct. So make it use use_udev() explicitly.
Signed-off-by: NeilBrown <neilb@suse.de>
A RAID10 array can have 'sets' of devices which are reported by
--detail.
They can now be collectively failed or removed.
Signed-off-by: NeilBrown <neilb@suse.de>
When stopping an mdmon array, at reshape might be being aborted
which inhibets O_EXCL. So if that is possible, call flush_mdmon
to make sure mdmon isn't still busy.
Reported-by: Pawel Baldysiak <pawel.baldysiak@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
There are a number of fields which should not
be left uninitialised. e.g. attempt_re_add can get
confused if ->writemostly is not set correctly.
Signed-off-by: NeilBrown <neilb@suse.de>
When asked to incrementally-remove a device, try marking the array
read-auto first. That will delay recording the failure in the
metadata until it is really relevant.
This way, if the device are just unplugged when the array is not
really in use, the metadata will remain clean.
If marking the default as faulty fails because it is EBUSY, that
implies that the array would be failed without the device. As the
device has (presumably gone) - that means the array is dead. So try
to stop it. If that fails because it is in use, send a uevent to
report that it is gone. Hopefully whoever mounted it will now let go.
This means that if you plug in some devices and they are
auto-assembled, then unplugging them will auto-deassemble relatively
cleanly.
To be complete, we really need the kernel to disassemble the array
after the last close somehow. Maybe if a REMOVE has failed and a STOP
has failed and nothing else much has happened, it could safely stop
the array on last close.
Signed-off-by: NeilBrown <neilb@suse.de>
We widely use a "devnum" which is 0 or +ve for md%d devices
and -ve for md_d%d devices.
But I want to be able to use md_%s device names.
So get rid of devnum (a number) and use devnm (a 32char string).
eg.
md0
md_d2
md_home
Signed-off-by: NeilBrown <neilb@suse.de>
mdadm /dev/mdXX --re-add faulty
will identify any faulty devices in the array, remove them, and
--re-add them.
Signed-off-by: NeilBrown <neilb@suse.de>
A recent change to improve error messages for subdev management broken
all use cases were device names like %d:%d were used.
Re-arrange the code again so we use dev_open first - which understands
those names - and then only try 'stat' if that failed.
The important thing is to base the 'Cannot find' message on the result
of 'stat', not on the result of 'open'.
Signed-off-by: NeilBrown <neilb@suse.de>
As dev_open uses O_DIRECT it will fail on directories and such.
So we never get to report that it isn't a block device.
So do a 'stat' earlier and if it is a block device, report the
error there.
Signed-off-by: NeilBrown <neilb@suse.de>
--replace can be used to replace a device without completely failing
it. Once the replacement completes the device will be failed.
--with can indicate which of several spares to use.
Signed-off-by: NeilBrown <neilb@suse.de>
mdadm --create /dev/md0 .... /dev/sda1:1024 /dev/sdb1:2048 ...
The size is in K unless a suffix: K M G is given.
The suffix 's' means sectors.
Signed-off-by: NeilBrown <neilb@suse.de>
This is currently only useful for 1.x metadata and will allow an
explicit --data-offset request on command line.
Signed-off-by: NeilBrown <neilb@suse.de>
We must only remove from a container if the device isn't a
member of any member array.
To check we look at the 'holders' directory in sysfs.
We currently skip that check if ->devname is "detached", however
that can never be true since the change that introduced
add_detached().
Also sysfs_unique_holder returns status in 'errno' which isn't
entirely safe as e.g. closedir() is probably allowed to clear it.
So make sysfs_unique_holder return an unambigious value, and us
it to decide what to report.
Signed-off-by: NeilBrown <neilb@suse.de>
'external' arrays don't support --re-add yet so old metadata is no
value, and 'ddf' gets confusing in mdmon if old metadata is found.
So for now, zero out any old metadata found before adding a spare to
an externally-managed array.
Reported-by: Albert Pauw <albert.pauw@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This patch fixes the following make everything compilation error:
Manage.c: In function ‘Manage_add’:
Manage.c:538: error: ‘dev_st’ may be used uninitialized in this function
make: *** [mdadm.Os] Error 1
Signed-off-by: Lukasz Dorau <lukasz.dorau@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This makes Manage_subdevs smaller, and makes the error-path handling
for Manage_add much cleaner and probably less buggy.
Signed-off-by: NeilBrown <neilb@suse.de>
The indent level is way too deep here, and this is a well defined
task, so split it out to a separate function.
Signed-off-by: NeilBrown <neilb@suse.de>
'st' is use to examine the metadata on the device being added
to see if a 're-add' is possible. However it is loaded long before
the 're-add' attempt is made.
So move the 'load_super' closer to were it is used - allowing us to
discard a number of 'free_super' call - and rename it to 'dev_st'
to emphasize that it related to the current device.
Signed-off-by: NeilBrown <neilb@suse.de>
Guoqing Jiang
NeilBrown
NeilBrown
Lukasz Dorau