A small bitmap-chunksize hurts performance without helping
resync speed much - particularly on internal bitmaps.
So set the default to at least 64Meg.
Signed-off-by: NeilBrown <neilb@suse.de>
1.1 is more flexible in a number of ways and is safer.
0.90 is still fully supported.
1.0 should possibly be used for RAID1 arrays that you
want to boot off, depending on your boot loader.
Signed-off-by: NeilBrown <neilb@suse.de>
This seems more appropriate for current (and recent) model drives than
64K.
64K is still the default for '--build' as changing that could corrupt
data.
64K is also the default rounding for 'linear' on kernels older than
2.6.16.
Signed-off-by: NeilBrown <neilb@suse.de>
LANG=C man --warnings -l mdadm.8 > /dev/null
complains that '.XX' is an invalid macro.
This is not correct. The sequence
.ig XX
anything can go here
.XX
is correct and is ignored (see 'info groff' and the 'ig' index
entry).
However the same can be achieved with
.ig
anything can go there
..
and this produces no warnings, so use that instead.
Signed-off-by: NeilBrown <neilb@suse.de>
ie. the percent increments after which RebuildNN event is generated
This is particulary useful when using --program option, rather than
(only) syslog for alerts.
Signed-off-by: Zdenek Behan <rain@matfyz.cz>
Signed-off-by: NeilBrown <neilb@suse.de>
This allows the layout to be parsed after the current level of the
array is know, so that the level doesn't need to be given (otherwise
pointlessly) on the command line.
Signed-off-by: NeilBrown <neilb@suse.de>
With 2.6.30 it is possible to tell the md driver to clip an array to a
size smaller than the real size of the array. This option gives
access to that feature. The size change does not persist
across restarts.
Signed-off-by: NeilBrown <neilb@suse.de>
If mdadm.conf contains
HOMEHOST <ignore>
or commandline contains
--homehost=<ignore>
then the check that array metadata mentions the given homehost is
replace by a check that the name recorded in the metadata is not
already used by some other array mentioned in mdadm.conf.
This allows more arrays to use their native name rather than having
an _NN suffix added.
This should only be used during boot time if all arrays required for
normal boot are listed in mdadm.conf.
If auto-assembly is used to find all array during boot, then the
HOMEHOST feature should be used to ensure there is no room for
confusion in choosing array names, and so it should not be set
to <ignore>.
Signed-off-by: NeilBrown <neilb@suse.de>
Currently Incremental_container is being called after adding each disk.
In the imsm case where spares are not tracked in the raid_disks field we
can use --no-degraded to block premature assembly.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Metadata formats like imsm work in concert with platform firmware and
hardware, so provide a way for mdadm to display this info to the user.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Its cumbersome to determine which devices to wait for in a system shutdown
script, so hook up --scan.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Previously it was possible to set the WRITEMOSTLY flag when
adding a device to an array, but not to clear the flag when re-adding.
This is now possible with --readwrite.
Signed-off-by: NeilBrown <neilb@suse.de>
.UR URL
text
.UE
is meant to create a hyperlink from the 'text' to the 'URL'.
But I wanted just to have the URL, so UR isn't really the right
tool - the URL gets displayed twice.
So just display the URL in bold and assume man2html etc can recognise
it and do the right thing.
Signed-off-by: NeilBrown <neilb@suse.de>
Root file systems backed by external metadata arrays need to be
explicitly checkpointed near the time the rootfs is marked readonly as
userspace will not have an opportunity to react to the final shutdown of
the array.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
For use in distro shutdown scripts with a RAID root file system.
Returns immediately if the array is 'readonly', or not an externally
managed array. It is up to the distro's scripts to make sure no new
writes hit the device after this returns 'true'.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Two places that should have been .B or .I were .M, which of
course is an error.
So fix these and that the opportunity to be more consistent
with highlighting of "mdadm". Make it always italic except when
used as a literal example, then bold.
