| Commit message (Collapse) | Author | Age | Files | Lines |
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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>
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The action we are waiting for may not be complete until the monitor has
had a chance to take action on the result.
The following script can now remove the device on the first attempt,
versus a few attempts with the original Wait():
#!/bin/bash
#export MDADM_NO_MDMON=1
export IMSM_DEVNAME_AS_SERIAL=1
./mdadm -Ss
./mdadm --zero-superblock /dev/loop[0-3]
echo 2 > /proc/sys/dev/raid/speed_limit_max
./mdadm --create /dev/imsm /dev/loop[0-3] -n 4 -e imsm -a md
./mdadm --create /dev/md/r1 /dev/loop[0-3] -n 4 -l 5 --force -a mdp
./mdadm --fail /dev/md/r1 /dev/loop3
./mdadm --wait /dev/md/r1
x=0
while ! ./mdadm --remove /dev/imsm /dev/loop3 > /dev/null 2>&1
do
x=$((x+1))
done
echo "removed after $x attempts"
./mdadm --add /dev/imsm /dev/loop3
Include 2 small cleanups:
* remove the almost open coded fd2devnum() in Wait() by introducing a
new utility routine stat2devnum()
* teach connect_monitor() to parse the container device from a subarray
string
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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Fix on call that passed an invalid mode to open
Don't pass a third arg unless we also pass O_CREAT
Use symbolic args for 2nd and 3rd args
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Some kernel versions don't put a space between 'active' and '(auto-read-only)'
in /proc/mdstat. This causes a parsing problem leaving 'level' set to
NULL which causes a crash.
So synthesise a space there if it is missing, and check for 'level' to
be NULL and don't de-ref if it is.
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Sure, mdinfo is bigger, but having a uniform structure for lots of things
will make life easier.
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include limits.h directly instead of values.h
Signed-off-by: maximilian attems <max@stro.at>
Signed-off-by: Neil Brown <neilb@suse.de>
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another small step for better klibc support, glibc compile tested.
Signed-off-by: maximilian attems <max@stro.at>
Signed-off-by: Neil Brown <neilb@suse.de>
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From: Doug Ledford <dledford@redhat.com>
This one actually does a couple things. Mainly related to raid4, but
kinda touches other raid levels some.
When creating a raid4 array, treat it like a raid5 array in that we
create it in degraded mode by default and add the last disk as a spare.
Besides speeding things up, this has a second effect that it makes mdadm
more consistent. In order to create a degraded raid5 array, you need
only passing missing as one of the devices. For a degraded raid4 array,
prior to this patch, you must pass assume-clean or else it refuses to
create the array. Even force won't make it work without assume-clean.
With the patch, raid4 behaves identical to raid5.
Separate from that, the monitor functionality completely ignores raid4
arrays. That seems to stem from the code that checks to see if the
array is part of a long list of types. It seems easier to check which
array types *aren't* redundant instead of listing the ones that are
redundant and missing some of them. This makes the monitor service
actually watch raid4 arrays.
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From: Doug Ledford <dledford@redhat.com>
When running with SELinux enabled and using mdadm to monitor devices,
attempts to send emails to an admin will be blocked because mdadm is
holding open /proc/mdstat without setting the FD_CLOEXEC flag. As a
result, sendmail has an open descriptor to /proc/mdstat after the
popen() call, which SELinux decides isn't really any of sendmail's
business and so sendmail gets denied.
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2.6 broke --monitor in various ways, including spare migration
stopped working. This fixes it.
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--incremental allows arrays to be assembled one device at a time.
This is expected to be used with udev.
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map_dev can be slow and interferes with trying to stop the array.
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This doesn't get mailed out, but will appear in syslog...
Maybe it should be mailed if it was a 'check' or 'repair' pass...
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Never use /etc/mdadm.conf if --config file is given (previously
some code used one, some used the other).
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From: martin f krafft <madduck@madduck.net>
Signed-off-by: Neil Brown <neilb@suse.de>
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From: Luca Berra <bluca@vodka.it>
glibc 2.4 is pedantic on ignoring return values from fprintf, fwrite and
write, so now we check the rval and actually do something with it.
in the Grow.c case i only print a warning, since i don't think we can do
anything in case we fail invalidating those superblocks (is should never
happen, but then...)
Signed-off-by: Neil Brown <neilb@suse.de>
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Signed-off-by: Neil Brown <neilb@suse.de>
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Signed-off-by: Neil Brown <neilb@suse.de>
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Signed-off-by: Neil Brown <neilb@suse.de>
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Signed-off-by: Neil Brown <neilb@suse.de>
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be explicitly set.
Signed-off-by: Neil Brown <neilb@suse.de>
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--monitor should now work with arrays larger than 28 devices.
Signed-off-by: Neil Brown <neilb@suse.de>
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Whenever we need a device file to open, if one cannot be found in /dev,
create a temporary one.
Signed-off-by: Neil Brown <neilb@suse.de>
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This means that "-Ds" lists arrays in an approprate order
for assembly.
Signed-off-by: Neil Brown <neilb@suse.de>
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From: ross@jose.lug.udel.edu (Ross Vandegrift)
Hi Neil,
While adding the text message mode, I saw a FIXME asking for syslog
support in monitor mode.
This patch adds exactly that.
Signed-off-by: Neil Brown <neilb@suse.de>
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Signed-off-by: Neil Brown <neilb@suse.de>
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This allows for larger device number if glibc supports
it (requires 2.3.3).
Also fail before creating larger device number if glibc
support isn't present.
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
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