map_num() returns NULL if key is not defined. This patch adds
alternative, non NULL version for cases where NULL is not expected.
There are many printf() calls where map_num() is called on variable
without NULL verification. It works, even if NULL is passed because
gcc is able to ignore NULL argument quietly but the behavior is
undefined. For safety reasons such usages will use map_num_s() now.
It is a potential point of regression.
Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
IMSM does more than comparing metadata and errors reported directly
from compare_super_imsm can be useful.
Add verbose flag to compare_super method and make all not critical
error printing configurable.
Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Since Linux 5.4 a layout is needed for RAID0 arrays with
varying device sizes.
This patch makes the layout of an array visible (via --examine)
and sets the layout on newly created arrays.
--layout=dangerous
can be used to avoid setting a layout so that they array
can be used on older kernels.
Tested-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Fixes the side effect of the patch b6180160f ("imsm: save current_vol number")
- wrong UUID is printed in detail for each volume.
New parameter "subarray" is added to determine what info should be extracted
from metadata (subarray or container).
The parameter affects only IMSM metadata.
Signed-off-by: Blazej Kucman <blazej.kucman@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
mdassemble doesn't handle container based arrays, no support for sysfs,
etc. It has not been actively maintained for years, so time to send it
off to retirement.
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Show the currently enabled consistency policy in the output from
--detail. Add 3 spaces to all existing items in Detail output to align
with "Consistency Policy : ".
Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@gmail.com>
Add a new parameter to mdadm: --consistency-policy=. It determines how
the array maintains consistency in case of unexpected shutdown. This
maps to the md sysfs attribute 'consistency_policy'. It can be used to
create a raid5 array using PPL. Add the necessary plumbing to pass this
option to metadata handlers. The write journal and bitmap
functionalities are treated as different policies, which are implicitly
selected when using --write-journal or --bitmap options.
Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@gmail.com>
In Detail.c the buffer path in function Detail is defined as path[200],
in fact the max lenth of content which needs to write to the buffer is
287. Because the length of dname of struct dirent is 255.
During building it reports error:
error: ‘%s’ directive writing up to 255 bytes into a region of size 189
[-Werror=format-overflow=]
In function examine_super0 there is a buffer nb with length 5.
But it need to show a int type argument. The lenght of max
number of int is 10. So the buffer length should be 11.
In human_size function the length of buf is 30. During building
there is a error:
output between 20 and 47 bytes into a destination of size 30.
Change the length to 47.
Signed-off-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@gmail.com>
Allow per-device "failfast" flag to be set when creating an
array or adding devices to an array.
When re-adding a device which had the failfast flag, it can be removed
using --nofailfast.
failfast status is printed in --detail and --examine output.
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
add_internal_bitmap() returned 1 on success and 0 on error which is
inconsistent. This changes it to return 0 on success and use more
reasonable error codes on error.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
For cluster raid, we need to displays bitmap related
contents from different bitmaps which are based on node
num. So bitmap_file_open and locate_bitmap are changed a
little bit for the purpose.
Reported-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Fixes: b98043a2f8 ("Show all bitmaps while examining bitmap")
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
v0.90 metadata can handle devices between 2GB and 4GB, but we need
to treat the 'size' and unsigned. In a couple of places we don't.
URL: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=809447
Signed-off-by: NeilBrown <neilb@suse.com>
"mdadm -X DISK" is used to report information about a bitmap
file, it is better to not display all the related infos if
bitmap is cleared with "--bitmap=none" under grow mode.
To do that, the locate_bitmap is changed a little to have a
return value based on MD_FEATURE_BITMAP_OFFSET.
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: NeilBrown <neilb@suse.com>
To support change the cluster name, the commit do the followings:
1. extend original write_bitmap function for new scenario.
2. add the scenarion to handle the modification of cluster's name
in write_bitmap1.
3. let the cluster name also show in examine_super1 and detail_super1
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
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>
make dprintf() print program name and __func__, so that
this messaging is consistent.
Also remove all __func__ messages from pr_err(). We shouldn't
leak that internal data in error message.
If we really want function name there, we new pr_XXX might
be wanted.
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>
We can only revert a reshape if the reshape_position aligns
properly for the old geometry.
If it doesn't we just fail for now.
Also fix a +/- error with updating raid_disks for super1.c
Signed-off-by: NeilBrown <neilb@suse.de>
This allows the smooth conversion of legacy 0.90 arrays
to 1.0 metadata.
Old metadata is likely to remain but will be ignored.
It can be removed with
mdadm --zero-superblock --metadata=0.90 /dev/whatever
Signed-off-by: NeilBrown <neilb@suse.de>
This allows the metadata on a device to be saved and later restored.
This can be useful before experimenting on an array that is misbehaving.
Suggested-by: Dan Williams <dan.j.williams@intel.com>
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>
Commit 1e2b276535 (Report error in --update
string is not recognised) broke homehost updating functionality because it
depended on each string comparison being done even after we already found
a match. Make it work again by restructuring code.
Reported-by: (and original version by) Justin Maggard <jmaggard10@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Now that we use O_DIRECT for all device IO, BLKFLSBUF is not needed to
ensure we get current data, and it can impose a cost if any flush-out
is needed. So remove it.
To be safe, add O_DIRECT to one place where it isn't currently used:
when reading a bitmap.
Signed-off-by: NeilBrown <neilb@suse.de>
As 'info->size' is signed, it cannot even hold values above
2TB.
But it isn't used much. sb->size is the important value and it
is unsigned.
So use that to check for overflow of size.
Reported-by: Eugene San <eugenesan@gmail.com>
And here's another trivial bugfix, now for spelling mistakes in various
places, authred by Sergey Kirpichev (Cc'ed) and carried in debian mdadm
package.
Signed-off-by: NeilBrown <neilb@suse.de>
When --uuid is specified in the command line, even for v0.90
superblock we override last portion of uuid with data from
--homehost, which is wrong (and disagrees with the manpage).
Only use homehost in super0 if no uuid is specified.
Signed-off-By: Michael Tokarev <mjt@tls.msk.ru>
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>
If we change some functions to accept 'verbose', where <0 means to be
quiet, in place of 'quiet', then we will be able to merge
'quiet' and 'verbose' together for simplicity.
Signed-off-by: NeilBrown <neilb@suse.de>
malloc should never fail, and if it does it is unlikely
that anything else useful can be done. Best approach is to
abort and let some super-daemon restart.
So define xmalloc, xcalloc, xrealloc, xstrdup which don't
fail but just print a message and exit. Then use those
removing all the tests for failure.
Also replace all "malloc;memset" sequences with 'xcalloc'.
Signed-off-by: NeilBrown <neilb@suse.de>
RAID10 arrays with an odd number of devices had the arraysize
reported wrongly by --examine due to a rounding error.
Reported-by: Chris Francy <zoredache@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This makes super[01].c properly align buffers used for the bitmap
using posix_memalign() to make sure the writes don't fail in case the
bitmap is opened using O_DIRECT.
This is based on https://bugzilla.redhat.com/show_bug.cgi?id=789898
and an initial patch by Alexander Murashkin.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Adding a bitmap via ioctl can only add it at a fixed location.
That location is not suitable for 4K-block devices.
So allow setting the bitmap location via sysfs if kernel supports it
and aim to always use 4K alignments.
Signed-off-by: NeilBrown <neilb@suse.de>
We need to force multiplication to use ULL before they
get to big, else it overflows. So move the "2ULL" to the start.
Signed-off-by: NeilBrown <neilb@suse.de>
Mariusz Tkaczyk
NeilBrown
Blazej Kucman
Jes Sorensen
Artur Paszkiewicz
Xiao Ni
NeilBrown
Jes Sorensen
Guoqing Jiang
Michael Tokarev