Signed-off-by: Libo Chen <libo.chen@huawei.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Currsntly this affects nothing, but xfer close should be called.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

If we have empty pagemap, the page server receives no
IO-s for one and doesn't create image file. Intoroduce
the OPEN command to say to page server, that we're about
to xfer and image so it can prepare.

https://bugzilla.openvz.org/show_bug.cgi?id=2584Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

First of all, 4 bits are not enough for type (shmem pagemap's is
28, which is 5 bits). Plus the encode trimmed bits from the id.

https://bugzilla.openvz.org/show_bug.cgi?id=2584Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Since commit 43ce038e -t is not required for restore,
plus a warning is printed if it is used. Let's remove
-t from criu restore in all test cases.
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

cr-check.c for some reason got x bit O_o
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Will be needed for parasite code.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

pages_scanned -- the amount of pages criu looked at for decision
pages_skipped_parent -- the amount of pages that were skipped, due to
                        they are present in parent image
pages_writted -- the amount of pages criu transfered into image
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

-D is used for dump and restore, i.e. to read and write image files,
depending on the command, so let's put a read/write-neutral description.
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

A couple of fixes related to the fact.

This is an addition to commit 43ce038eSigned-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

This patch

1. Replaces using argv[0] with criu literal. Using argv[0] is bad
because it can be a relative path, and it can be not "criu" but
say a symlink pointing to criu.

2. Reformats the source to print basic help test in justone call to
pr_msg(), same as commit 6ea0e002 did for extended help, for same
reasons: having it this way is easier to do further edits.
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

I'll need to modify this header so before anything
else lets beautify it

 - drop struct pstree_item declaration it's already in pstree.h
 - move struct cr_options to top
 - align members of struct ns_desc
 - move externs to top
 - add argument name to try_show_namespaces
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

#PSBM-19883
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

The "*:<fmt>" describes format for everyone else in pretty.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Use <field>: format.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

1. clean the code
2. add support for <field-name>:<format> strings in pretty
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Now they seem to look OK.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

The first is similar to existing snapshot test -- it calls
several pre-dumps on memory-changing zdtm test, then dumps
and check restore goes OK.

The second test is aimed at measuring frozen-time -- it
takes zdtm test with big mappings, dumps one, then start the
test again and calls one pre-dump plus dump. The sum of
frozen times in the 2nd dump (well, pre-dump + dump) should
be much smaller then the one of the 1st "just dump".
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

With this action criu will seize tasks, grab all its memory into
page-pipes, rest dirty tracker and will then release them. Writing
the memory from page-pipes would occur after tasks are unfreezed
and thus the frozen time should become reasonably small.

When pre-dump is in action, the dirty tracking is forcedly turned
off as well as tasks are resumed afterwards, not killed, by default.

This is a prerequisite for iterative migration.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Dumping memory is draining it from parasite, for pre-dump
this time would be reasonably small. _Writing_ the memory
would occur _after_ tasks unseize and resume.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

For pre-dump we'll need to cure the target task(s), but keep the
parasite_ctl (for its local args mapping) for memory image write.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

There will be more tests on memory snapshot.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

For pre-dump we won't need IDs, but will need items only,
thus make these two calls separate.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

They are not documented, thus OK for now. Two options --
* one to specify where the parent images are
* one to reset dirty memory tracking
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

This is required for (soon to be) pre-dump command -- this command
will have to keep parasite args with pagemap (iovecs) some time after
parasite is executed. Since we call mprotect cmd _after_ pages dump
we can thus spoil these iovecs. To address this vmas to mprotect and
iovecs to dump are located in one parasite args area one after another
without intersections.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Options are collected in global variable, no need to have them on stack.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

Basic timings for dump (freeze, frozen, mem dump).
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>