Now it allows updating cluster nodes without specify --nodes. It can write superblock
with zero nodes. It can break the current cluster. Add this check to avoid this problem.
v2: It needs check c.update first to avoid NULL pointer reference
v3: Wol points the typo error
Signed-off-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
If we start reshaping on md which shares sub-devices with another
resyncing md, it may be forced to wait for others to complete. mdadm
occupies the md's fd during this time, which causes the md can not be
stopped and the filesystem can not be mounted on the md. We can close
md's fd earlier to solve this problem.
Reproducible Steps:
1. create two partitions on sda, sdb, sdc, sdd
2. create raid1 with sda1, sdb1
mdadm -C /dev/md1 --assume-clean -l1 -n2 /dev/sda1 /dev/sdb1
3. create raid5 with sda2, sdb2, sdc2
mdadm -C /dev/md2 --assume-clean -l5 -n3 /dev/sda2 /dev/sdb2 /dev/sdc2
4. start resync at md1
echo repair > /sys/block/md1/md/sync_action
5. reshape raid5 to raid6
mdadm -a /dev/md2 /dev/sdd2
mdadm --grow /dev/md2 -n4 -l6 --backup-file=/root/md2-backup
Now mdadm is occupying the fd of md2, causing md2 unable to be stopped
6.Try to stop md2, an error message shows
mdadm -S /dev/md2
mdadm: Cannot get exclusive access to /dev/md3:Perhaps a running process,
mounted filesystem or active volume group?
Reviewed-by: Alex Wu <alexwu@synology.com>
Reviewed-by: BingJing Chang <bingjingc@synology.com>
Reviewed-by: Danny Shih <dannyshih@synology.com>
Signed-off-by: ChangSyun Peng <allenpeng@synology.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
All URLs in the source are available over HTTPS, so convert all URLs to
HTTPS with the command below.
git grep -l 'http://' | xargs sed -i 's,http://,https://,g'
Revert the changes to announcement files `ANNOUNCE-*` as requested by
the maintainer.
Cc: linux-raid@vger.kernel.org
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
For 1.x metadata, when the user requested creation of an array on
component devices that were too small even to hold the superblock,
an undetected integer wraparound (underflow) resulted in an enormous
computed size which resulted in various follow-on errors such as
floating-point exception.
This patch detects this condition, prints a reasonable diagnostic
message, and refuses to continue.
Signed-off-by: David Favro <dfavro@meta-dynamic.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Manual assembly with existing link caused overwriting
this link. Add checking link and block this situation.
Signed-off-by: Kinga Tanska <kinga.tanska@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Got below error when run "make everything".
restripe.c: In function ‘test_stripes’:
restripe.c:870:4: error: ignoring return value of ‘read’, declared with attribute warn_unused_result [-Werror=unused-result]
read(source[i], stripes[i], chunk_size);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Fix it by check the return value of ‘read’, and free memory
in the failure case.
And check the return value of lseek as well per Jes's comment.
Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
We have to include the \0 character in the length when copying a
string with strncpy() for which length was found with strlen().
Otherwise the destination will not get null terminated - except that
we explicitly zeroed it out earlier.
This quiets down the compiler's warnings.
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Currently, 'make raid6check' is build broken since commit b06815989
("mdadm: load default sysfs attributes after assemblation").
/usr/bin/ld: sysfs.o: in function `sysfsline':
sysfs.c:(.text+0x2707): undefined reference to `parse_uuid'
/usr/bin/ld: sysfs.c:(.text+0x271a): undefined reference to `uuid_zero'
/usr/bin/ld: sysfs.c:(.text+0x2721): undefined reference to `uuid_zero'
Apparently, the compile of mdadm or raid6check are coupled with uuid
functions inside util.c. However, we can't just add util.o to CHECK_OBJS
which raid6check is needed, because it caused other worse problems.
So, let's introduce a uuid.c file which is indenpended file to fix the
problem, all the contents are splitted from util.c.
Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Add optional EXTRAVERSION parameter to Makefile and allow to mark version
by user friendly label. It might be useful when creating custom
spins of mdadm, or labeling some instance in between major releases.
Signed-off-by: Tkaczyk Mariusz <mariusz.tkaczyk@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Currently mdcheck (when called with `--duration`) logs only the
beginning of the check, the pausing and the continuation but not the
completion.
So, log the completion, too, so that it can be determined how long the
raid check took.
2020-05-08T18:00:02+02:00 deadpool root: mdcheck start checking /dev/md0
2020-05-08T18:00:02+02:00 deadpool root: mdcheck start checking /dev/md1
2020-05-09T15:32:04+02:00 deadpool root: mdcheck finished checking /dev/md1
2020-05-09T17:38:04+02:00 deadpool root: mdcheck finished checking /dev/md0
Cc: linux-raid@vger.kernel.org
Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
If the array is dirty handler will set resync_start to 0 to inform kernel
that resync is needed. RWH affects only raid456 module, for other
levels array will be started even array is degraded and resync cannot be
performed.
Force is really meaningful for raid456. If array is degraded and resync
is requested, kernel will reject an attempt to start the array. To
respect force, it has to be marked as clean (this will be done for each
array without PPL) and remove the resync request (only for raid 456).
Data corruption may occur so proper warning is added.
Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
When mdadm tries to assemble one working device and one zeroed-out device,
it failed but print successful message because there is --uuid option.
Following script always reproduce it.
dd if=/dev/zero of=/dev/ram0 oflag=direct
dd if=/dev/zero of=/dev/ram1 oflag=direct
./mdadm -C /dev/md111 -e 1.2 --uuid="12345678:12345678:12345678:12345678" \
-l1 -n2 /dev/ram0 /dev/ram1
./mdadm -S /dev/md111
dd if=/dev/zero of=/dev/ram1 oflag=direct
./mdadm -A /dev/md111 --uuid="12345678:12345678:12345678:12345678" \
/dev/ram0 /dev/ram1
Following is message from mdadm.
mdadm: No super block found on /dev/ram1 (Expected magic a92b4efc, got 00000000)
mdadm: no RAID superblock on /dev/ram1
mdadm: /dev/md111 assembled from 1 drive - need all 2 to start it (use --run to insist).
The mdadm say that it assembled but mdadm does not create /dev/md111.
The message is wrong.
After applying this patch, mdadm reports error correctly as following.
mdadm: No super block found on /dev/ram1 (Expected magic a92b4efc, got 00000000)
mdadm: no RAID superblock on /dev/ram1
mdadm: /dev/ram1 has no superblock - assembly aborted
Signed-off-by: Gioh Kim <gi-oh.kim@cloud.ionos.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
New drive in container always appears as spare. Manager is able to
handle that, and queues appropriative update to monitor.
No update from mdadm side has to be processed, just insert the drive and
ping the mdmon. Metadata has to be written if no mdmon is running (case
for Raid0 or container without arrays).
If bare drive is added very early on startup (by custom bare rule),
there is possiblity that mdmon was not restarted after switch root. Old
one is not able to handle new drive. New one fails because there is
drive without metadata in container and metadata cannot be loaded.
To prevent this, write spare metadata before adding device
to container. Mdmon will overwrite it (same case as spare migration,
if drive appears it writes the most recent metadata).
Metadata has to be written only on new drive before sysfs_add_disk(),
don't race with mdmon if running.
Signed-off-by: Tkaczyk Mariusz <mariusz.tkaczyk@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
On the node with /proc/mdstat is
Personalities : [raid1]
md0 : active raid1 sdb[4] sdc[3] sdd[2]
1046528 blocks super 1.2 [3/2] [UU_]
recover=REMOTE
bitmap: 1/1 pages [4KB], 65536KB chunk
Let's change the 'State' of 'mdadm -Q -D' accordingly
State : clean, degraded
With this patch, it will be
State : clean, degraded, recovering (REMOTE)
Signed-off-by: Lidong Zhong <lidong.zhong@suse.com>
Acked-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
When running mdadm monitor with scan mode, only one autorebuild process
is allowed. check_one_sharer() checks duplicated process by following
steps,
1) Read autorebuild.pid file,
- if file does not exist, no duplicated process, go to 3).
- if file exists, continue to next step.
2) Read pid number from autorebuild.pid file, then check procfs pid
directory /proc/<PID>,
- if the directory does not exist, no duplicated process, go to 3)
- if the directory exists, print error message for duplicated process
and exit this mdadm.
3) Write current pid into autorebuild.pid file, continue to monitor in
scan mode.
The problem for the above step 2) is, if after system reboots and
another different process happens to have exact same pid number which
autorebuild.pid file records, check_one_sharer() will treat it as a
duplicated mdadm process and returns error with message "Only one
autorebuild process allowed in scan mode, aborting".
This patch tries to fix the above same-pid-but-different-process issue
by one more step to check the process command name,
1) Read autorebuild.pid file
- if file does not exist, no duplicated process, go to 4).
- if file exists, continue to next step.
2) Read pid number from autorebuild.pid file, then check procfs file
comm with the specific pid directory /proc/<PID>/comm
- if the file does not exit, it means the directory /proc/<PID> does
not exist, go to 4)
- if the file exits, continue next step
3) Read process command name from /proc/<PIC>/comm, compare the command
name with "mdadm" process name,
- if not equal, no duplicated process, goto 4)
- if strings are equal, print error message for duplicated process
and exit this mdadm.
4) Write current pid into autorebuild.pid file, continue to monitor in
scan mode.
Now check_one_sharer() returns error for duplicated process only when
the recorded pid from autorebuild.pid exists, and the process has exact
same command name as "mdadm".
Reported-by: Shinkichi Yamazaki <shinkichi.yamazaki@suse.com>
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
When adding a device to a container mdadm has to close its file
descriptor before sysfs_add_disk(). This generates change event.
There is race possibility because metadata is already written and other
-I process can place drive differently. As a result device can be added
to two containers simultaneously.
From IMSM perspective there is no need to react for change event. IMSM
doesn't support stacked devices.
Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Show the index of the subarray as 'Subarray' and the value of the
my_vol_raid_dev_num field as 'Volume ID'.
Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Also present its value in --examine and --examine --export.
Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Check if given size of member drive is not less than 1 MibiByte.
Signed-off-by: Blazej Kucman <blazej.kucman@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Functionalities --dump and --restore are not supported.
Remove dead code from imsm.
Signed-off-by: Blazej Kucman <blazej.kucman@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
After patch b6180160f ("imsm: save current_vol number")
current_vol for imsm is not set and kill_subarray()
cannot determine which volume has to be deleted.
Volume has to be passed as "subarray_id".
The parameter affects only IMSM metadata.
Signed-off-by: Blazej Kucman <blazej.kucman@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
The whitespace between Environment= and the true value causes confusion.
To avoid confusing other people in future, remove the whitespace to keep
it a simple, unambiguous syntax
Signed-off-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
When growing a raid0 device, if the new component disk size is not
big enough, the grow operation may fail due to lack of backup space.
The minimum backup space should be larger than:
LCM(old, new) * chunk-size * 2
where LCM() is the least common multiple of the old and new count of
component disks, and "* 2" comes from the fact that mdadm refuses to
use more than half of a spare device for backup space.
There are users reporting such failure when they grew a raid0 array
with small component disk. Neil Brown points out this is not a bug
and how the failure comes. This patch adds note information into
mdadm(8) man page in the Notes part of GROW MODE section to explain
the minimum size requirement of new component disk size or external
backup size.
Reviewed-by: Petr Vorel <pvorel@suse.cz>
Cc: NeilBrown <neilb@suse.de>
Cc: Jes Sorensen <jsorensen@fb.com>
Cc: Paul Menzel <pmenzel@molgen.mpg.de>
Cc: Wols Lists <antlists@youngman.org.uk>
Cc: Nix <nix@esperi.org.uk>
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Imsm tracks as "working_disk" each visible drive.
Assemble routine expects that the value will return count
of active member drives recorded in metadata.
As a side effect "--no-degraded" doesn't work correctly for imsm.
Align this field to others.
Added check, if the option --no-degraded is called with --scan.
Signed-off-by: Blazej Kucman <blazej.kucman@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Adding support for Tebibytes enables display size of
volumes in Tebibytes and Terabytes when they are
bigger than 2048 GiB (or GB).
Signed-off-by: Kinga Tanska <kinga.tanska@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Update --grow option description in manual, according to
the supported grow operations by IMSM.
Signed-off-by: Blazej Kucman <blazej.kucman@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
In commit 039b7225e6 ("md: allow creation of mdNNN arrays via
md_mod/parameters/new_array") support for name like mdNNN
was added. Special warning, when kernel is unable to handle
request, was added in commit 7105228e19
("mdadm/mdopen: create new function create_named_array for
writing to new_array"), but it was not adequate enough,
because in this situation mdadm tries to do it in old way.
This commit changes warning to be more relevant when
creating RAID container with "/dev/mdNNN" name and mdadm
back to old approach.
Signed-off-by: Kinga Tanska <kinga.tanska@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Commit 1180ed5 told make to only respect $(CROSS_COMPILE) when $(CC)
was unset. But that will never be the case, as make provides
a default value for $(CC). Change this logic to respect $(CROSS_COMPILE)
when $(CC) is the default. Patch originally by Helmet Grohne.
Fixes: 1180ed5 ("Makefile: make the CC definition conditional")
Signed-off-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
If you have a RAID0 array with varying sized devices
on a kernel before 5.4, you cannot assembling it on
5.4 or later without explicitly setting the layout.
This is now possible with
--update=layout-original (For 3.13 and earlier kernels)
or
--update=layout-alternate (for 3.14 and later kernels)
Signed-off-by: NeilBrown <neilb@suse.de>
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>
Change NVMe controller path to device node path
in mdadm --detail-platform and print serial number.
The method imsm_read_serial always trimes serial to
MAX_RAID_SERIAL_LEN, added parameter 'serial_buf_len'
will be used to check the serial fit
to passed buffor, if not, will be trimed.
Signed-off-by: Blazej Kucman <blazej.kucman@intel.com>
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>
Previous re-add operation only calls ioctl(HOT_ADD_DISK) for array without
metadata(e.g. mdadm -B/--build) when md driver is less than 0.90.02, but
commit 091e8e6 breaks the logic and current re-add operation can call
ioctl(HOT_ADD_DISK) even if md driver is 0.90.03.
This issue is reproduced by 05r1-re-add-nosuper:
------------------------------------------------
++ die 'resync or recovery is happening!'
++ echo -e '\n\tERROR: resync or recovery is happening! \n'
ERROR: resync or recovery is happening!
------------------------------------------------
Fixes: 091e8e6("Manage: Remove all references to md_get_version()")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Xiao Yang <ice_yangxiao@163.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
super-intel marks a number of structures 'packed', but this
doesn't change the layout - they are already well organized.
This is a problem a gcc warns when code takes the address
of a field in a packet struct - as super-intel sometimes does.
So remove the marking where isn't needed.
Do ensure this does introduce a regression, add a compile-time
assertion that the size of the structure is exactly the value
it had before the 'packed' notation was removed.
Note that a couple of structure do need to be packed.
As the address of fields is never taken, that is safe.
Signed-off-by: NeilBrown <neilb@suse.de>
Acked-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
The suse sysconfig/mdadm allows MDADM_CHECK_DURATION
to be set, but it is currently ignored.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
$MDADM_CHECK_DURATION allows the value to be split on spaces.
${MDADM_CHECK_DURATION} avoids such splitting.
Making this change removes the need for double quoting when setting
the default Environment, and means that double quoting isn't needed
in the EnvironmentFile.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
mdcheck_continue continues a regular array scan that was started by
mdcheck_start.
mdcheck_start will ensure that mdcheck_continue is active.
Howver if you reboot after a check has started, but before it finishes,
then mdcheck_continue won't cause it to continue, because nothing
starts it on boot.
So add an install option for mdcheck_contine, and make sure it
gets enabled when mdcheck_start is enabled.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Removed checks which limited second volume size only to max value (the
largest size that fits on all current drives). It is now permitted
to create second volume with size lower then maximum possible.
Signed-off-by: Krzysztof Smolinski <krzysztof.smolinski@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
The imsm container_content routine will set curr_volume index in super
for getting volume information. This flag has never been restored to
original value, later other function may rely on it.
Restore this flag to original value.
Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
There is a bug in udev (which will hopefully get fixed, but
we should allow for it anways).
When reading a sysfs attribute, it first reads the whole
value of the attribute, then reads again expecting to get
a read of 0 bytes, like you would with an ordinary file.
If the sysfs attribute changed between these two reads, it can
get a mixture of two values.
In particular, if it reads when 'array_state' is changing from
'clear' to 'inactive', it can find the value as "clear\nve".
This causes the test for "|clear|active" to fail, so systemd is allowed
to think that the array is ready - when it isn't.
So change the pattern to allow for this but adding a wildcard at
the end.
Also don't allow for an empty string - reading array_state will
never return an empty string - if it exists at all, it will be
non-empty.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
If there is no write I/O between removing member disk and re-add it, there is no
recovery after re-adding member disk.
Signed-off-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
devlist is an string. It will change to an array if there is disk that
is sbd disk. If one device is sbd, it runs devlist=().
This line code changes devlist from a string to an array. If there is
no sbd device, it can't run this line code. So it will still be a string.
The later codes need an array, rather than an string. So init devlist
as an array to fix this problem.
Signed-off-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
The sysfs nodes under bitmap are not recorded in md.4,
add them based on md.rst and kernel source code.
Cc: NeilBrown <neilb@suse.com>
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
Xiao Ni
allenpeng
Jes Sorensen
Paul Menzel
David Favro
Kinga Tanska
Guoqing Jiang
Tkaczyk Mariusz
Donald Buczek
Nigel Croxon
Gioh Kim
Lidong Zhong
Coly Li
Artur Paszkiewicz
Blazej Kucman
dann frazier
NeilBrown
Xiao Yang
Krzysztof Smolinski
Guoqing Jiang