| Commit message (Collapse) | Author | Age | Files | Lines |
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Coverity-ID: 1055174
Signed-off-by: Matthew Daley <mattjd@gmail.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
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This will allow a user to default to a network driver domain
system-wide.
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
Acked-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
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During the Xen 4.3 release we discussed that this feature could be
turned on by default - as it benefits all of the guests - not just
tmem related.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: George Dunlap <george.dunlap@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
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During the review it was noticed that it would be better if internally
the claim_mode was held as an 'int' instead of a 'bool'. The reason
is that during the startup of xl, one has call the libxl_defbool_setdefault.
otherwise any usage of claim_mode would result in assert break.
The assert is due to the fact that using defbool without any set
values (either true of false) will cause it hit an assertion.
If we use an 'int' we don't have to worry about it and by default
the value of zero will suffice for checks whether the claim is
enabled or disabled.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Ian Campbell <Ian.Campbell@citrix.com>
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The XENMEM_claim_pages hypercall operates per domain and it should be
used system wide. As such this patch introduces a global configuration
option 'claim_mode' that by default is disabled.
If this option is enabled then when a guest is created there will be an
guarantee that there is memory available for the guest. This is an
particularly acute problem on hosts with memory over-provisioned guests
that use tmem and have self-balloon enabled (which is the default option
for them). The self-balloon mechanism can deflate/inflate the balloon
quickly and the amount of free memory (which 'xl info' can show) is stale
the moment it is printed. When claim is enabled a reservation for the
amount of memory ('memory' in guest config) is set, which is then reduced
as the domain's memory is populated and eventually reaches zero.
If the reservation cannot be meet the guest creation fails immediately
instead of taking seconds/minutes (depending on the size of the guest)
while the guest is populated.
Note that to enable tmem type guests, one needs to provide 'tmem' on the
Xen hypervisor argument and as well on the Linux kernel command line.
There are two boolean options:
(0) No claim is made. Memory population during guest creation will be
attempted as normal and may fail due to memory exhaustion.
(1) Normal memory and freeable pool of ephemeral pages (tmem) is used when
calculating whether there is enough memory free to launch a guest.
This guarantees immediate feedback whether the guest can be launched due
to memory exhaustion (which can take a long time to find out if launching
massively huge guests) and in parallel.
[v1: Removed own claim_mode type, using just bool, improved docs, all per
Ian's suggestion]
[v2: Updated the comments]
[v3: Rebase on top 733b9c524dbc2bec318bfc3588ed1652455d30ec (xl: add vif.default.script)]
[v4: Fixed up comments]
[v5: s/global_claim_mode/claim_mode/]
[v6: Ian Jackson's feedback: use libxl_defbool, better comments, etc]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
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In xl.conf, autoballoon="auto" will do the right thing for most
people. Make it the default (instead of "on").
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
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autoballoon=1 is not recommened if dom0_mem was used to reduce the
amount of dom0 memory. Instead of requiring users to change xl.conf
if they do this, extend the autoballoon option with a new choice:
"auto".
With autoballoon="auto", autoballooning will be disabled if dom0_mem
was used on the Xen command line.
For consistency, accept "on" and "off" as valid autoballoon options (1
and 0 are still accepted).
The default remains "on" for now.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
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Replace vifscript with vif.default.script. The old config option is
kept for backwards compatibility.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Cc: George Dunlap <george.dunlap@citrix.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
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This is a replacement for defaultbridge xl.conf option. The now
deprecated defaultbridge is still supported.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Cc: George Dunlap <George.Dunlap@eu.citrix.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
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This adds a new global option in the xl configuration file called
"vif.default.gatewaydev", that is used to specify the default
gatewaydev to use when none is passed in the vif specification.
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Tested-by: Ulf Kreutzberg <ulf.kreutzberg@hosteurope.de>
Cc: Ulf Kreutzberg <ulf.kreutzberg@hosteurope.de>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: George Dunlap <george.dunlap@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
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xl frequently just calls exit(3), especially on error. Try to clean
up some of our global state to make tools like valgrind more useful.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
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Add and option to xl.conf file to decide if hotplug scripts are
executed from the toolstack (xl) or from udev as it used to be in the
past.
This option is only introduced in this patch, but it has no effect
since the code to call hotplug scripts from libxl is introduced in a
latter patch.
This choice will be saved in "libxl/disable_udev", as specified in the
DISABLE_UDEV_PATH constant.
Signed-off-by: Roger Pau Monne <roger.pau@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
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* Give reason for check (unpredictable results)
* Give a better recommendation (shut down xend)
* Make it clear that -f is overriding a safety check.
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
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These are only used by xl.
Rename _libxl_paths.h -> _paths.h, these are not actually "libxl" paths but
rather are part of the Xen build time configuration. It is fine for xl to also
consume them.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
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Introduce a blkdev_start in xl.conf and a corresponding string in
libxl_domain_build_info.
Add a blkdev_start parameter to libxl__device_disk_local_attach: it is
going to be used in a following patch.
blkdev_start specifies the first block device to be used for temporary
block device allocations by the toolstack.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Campbell <ian.campbell@citrix.com>
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Each time xl forks, it needs to record the pid, so that its exit
status can be preserved if it happens that libxl's event loop reaped
it. Consequently we also have a new wrapper for waitpid, which in
that case returns the previously-reaped status.
When we get a console ready callback from libxl, check to see if we
have spawned but not reaped a previous console client, and if so reap
it now. (This is necessary to prevent improper use of the xlchild
struct, but has the happy consequence of checking the exit status of
the first console client in the pygrub case.)
Refactor the two calls to libxl_ctx_alloc into a new function
xl_ctx_alloc which also sets the child reaped handler callback.
All of this has the effect of suppressing a message
unknown child [nnnn] unexpected exited status zero
which would sometimes (depending on a race) appear with `xl create -c'
and pygrub.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Reported-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Roger Pau Monne <roger.pau@citrix.com>
[ ijc -- corrected return codes in xl_reaped_callback to match documented
convention. ]
Committed-by: Ian Campbell <ian.campbell@citrix.com>
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Prevent xl from doing any operation if xend daemon is running. That
prevents bugs that happened when xl and xend raced to close a domain.
Signed-off-by: Roger Pau Monne <roger.pau@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
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Abolish libxl_fork. Its only callers were in xl. Its functionality
is now moved elsewhere, as follows:
* The "logging version of fork", which is what it was billed as, is now
xl_fork, which also dies on failure.
* Closing the xenstore handle in the child is now done in
libxl__ev_child_fork, which is the only remaining place where fork
is called in libxl.
* We provide a new function libxl__ev_child_xenstore_reopen for
in-libxl children to make the ctx useable for xenstore again.
* Consequently libxl__spawn_record_pid now no longer needs to mess
about with its own xenstore handle. As a bonus it can now just use
libxl__xs_write.
Also, since we have now converted all the forkers in libxl, we can
always honour the fork_replacement childproc hook - so do so.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
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We introduce a new "carefd" concept, which relates to fds that we care
about not being inherited by long-lived children.
As yet we do not use this anywhere in libxl. Until all locations in
libxl which make such fds are converted, libxl__postfork may not work
entirely properly. If these locations do not use O_CLOEXEC (or use
calls for which there is no O_CLOEXEC) then multithreaded programs may
not work properly.
This introduces a new API call libxl_postfork_child_noexec which must
be called by applications which make long-running non-execing
children. Add the appropriate call to xl's postfork function.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
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libxl's task has become too complicated (particularly in the presence
of both forking and multithreading) to support reuse of the same
libxl_ctx after fork.
So abolish libxl_ctx_fork. xl instead simply initialises a new
libxl_ctx.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
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Toolstacks which use libxl should not need to use libxc.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Jackson <ian.jackson.citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
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Currently guests created with the xl stack will have "xenbr0"
written as their default into xenstore. It can be changed in
the individual guest config files, but there is no way to
have that default globally changed.
Add a config option to xl.conf that allows to have a different
default bridge name.
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
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Move the sxp producing code off into a separate file. It is supported
for legacy reasons and needn't be updated other than the improve
compatibility with xm.
libxl_domain_config is not currently generated by the IDL (adding the
necessary support for Array types is on my to do list) so hand code
the json generation function for now.
Since this rather directly exposes a libxl data structure it's not
clear what sort of forward compatibility guarantees we can
make. However it seems like it should be as stable as libxl's own API
(which we are looking to stabilise)
(Gratuitous string.h include needed for memset in libxl_util.h)
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
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* dolog leaked the log message (!)
* main() leaked the config_data (perhaps a false positive from valgrind,
but it's nicer to tidy it up).
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
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I want it for get_long but we might as well have it everywhere.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Jackson <ian.jackson.citrix.com>
Acked-by: Ian Jackson <ian.jackson.citrix.com>
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Currently unused but gives us scope for expansion in an ABI compatible manner
in the future.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson.citrix.com>
Committed-by: Ian Jackson <ian.jackson.citrix.com>
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Several places which were previsously indented using hard tabs are now
incorrectly indented. Fix them up.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
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Commit exactly the results of running
find \! -iname '*.txt' -type f -print0 | xargs -0 perl -p -i.bak -E 's/\s+\n/\n/'
Signed-off-by: Wei Liu <liuw@liuw.name>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed: Ian Jackson <ian.jackson@eu.citrix.com>
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This sets a global dryrun_only variable, which individual commands are
expected to honour. To avoid accidents, we introduce a new can_dryrun
member in the command table, which is initially set to 0 for each
command.
Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
Committed-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
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This completely removes libxenstore from libxl users' view.
xl still needs libxenctrl directly due to the direct use of the
xentoollog functionality but it is not exposed to the indirect linkage
anymore.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
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Add "vifscript" option to xl.conf which configures the default vif
script to use (default remains "vif-bridge")
Write each VIFs "ip" option to xenstore so the vif-route script can
pick it up.
Reported-by: W. Michael Petullo <mike@flyn.org>.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
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Free the needed amount of memory before proceeding with the domain
build.
Use a filelock to prevent other xl instances from conflicting during
this operation.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
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Add a global configuration file: /etc/xen/xl.conf; the only option
currently parsed is autoballoon that is 1 by default.
[fixed up for conflicts with libxl__ naming policy changes -iwj]
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
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This patch converts xl to randomly generate UUID's rather than using a
dodgy time-seeded PRNG. I have ignored various suggestions so far on
auto-generation of MAC addresses and left it as a topic for a future
patch to solve. In other words the behaviour stays the same it's just
using a true random source. This patch also implements the "uuid" config
file parameter in xl.
Signed-off-by: Gianni Tedesco <gianni.tedesco@citrix.com>
Acked-By: Christoph Egger <Christoph.Egger@amd.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
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Currently xl passes the entire argc+argv to each subcommand and relies
on the preservation of the global optind variable to ensure that the
subcommand correctly handles argument parsing (e.g. accounting for "xl
[command]" vs "xl -v [command]").
This requirement for individual sub-commands to parse arguments
relative to optind is subtle and prone to being forgotten (or simply
not expected). Several sub-commands have recently been broken in this
way (now fixed).
Therefore arrange that the argv+argc passed to the sub-commands looks
like you would expect for a regular C main function and includes
argv[0] equal to the command name with command specific arguments in
argv[1] onwards.
Since all sub-commands (currently) correctly obey the optind it is
sufficient to reset it to 1 (as described in getopt(3)) in order to
not break the sub-commands' own argument parsing.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
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It has been unused since 21732:eb34666befcc.
Removing the include of sys/ptrace.h and threaddb.h exposed a few
places which were using time(2) or gettimeofday(2) without including
time.h or sys/time.h respectively and were relying on an include.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
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Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
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Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
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Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com>
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for those of us who are used to typing "xm cr foo"
Signed-off-by: Tim Deegan <Tim.Deegan@citrix.com>
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xl help 'command' should give the help of the 'command',
but current it does not, it just gives a full list of xl
supported commands. This patch fix it.
Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
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The -v option, which must come before the xl command, increases the
logging level each time it is supplied.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
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We now require callers to provide a xentoollog_logger* for
libxl_ctx_init, and use that for all our own logging and also for
xc_interface_open.
Corresponding change to xl.c.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
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Declarations (as opposed to definitions) of external objects should
not appear in .c files.
Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
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This provides a single place to put declarations of external symbols
etc.
Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
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Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
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Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
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Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
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Signed-off-by: Yu Zhiguo <yuzg@cn.fujitsu.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
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Add option '-p' for command 'xl create', and update
the help info.
* -p Leave the domain paused after it is created.
Signed-off-by: Yu Zhiguo <yuzg@cn.fujitsu.com>
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