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cgroup: Add "ignore" mode for --manage-cgroups

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Since commit 6c572bee8f ("cgroup: Set "soft" mode by default") it
become impossible to set ignore mode at all. Provide a user option to do
that.

Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrei Vagin <avagin@gmail.com>
This commit is contained in:
Dmitry Safonov 2019-05-01 14:59:44 +01:00 • committed by Andrei Vagin
parent 8c5b25cbf5
commit 4eb2df5ae6
3 changed files with 6 additions and 1 deletions
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2
Documentation/criu.txt
View file

@ -440,6 +440,8 @@ The 'mode' may be one of the following:
*strict*::: Restore all cgroups and their properties from the scratch,
requiring them to not present in the system.
*ignore*::: Don't deal with cgroups and pretend that they don't exist.
*--cgroup-root* ['controller'*:*]/'newroot'::
Change the root cgroup the controller will be installed into. No controller
means that root is the default for all controllers not specified.

2
criu/config.c
View file

@ -368,6 +368,8 @@ static int parse_manage_cgroups(struct cr_options *opts, const char *optarg)
opts->manage_cgroups = CG_MODE_FULL;
} else if (!strcmp(optarg, "strict")) {
opts->manage_cgroups = CG_MODE_STRICT;
} else if (!strcmp(optarg, "ignore")) {
opts->manage_cgroups = CG_MODE_IGNORE;
} else
goto Esyntax;

3
criu/crtools.c
View file

@ -345,7 +345,8 @@ usage:
" --irmap-scan-path FILE\n"
" add a path the irmap hints to scan\n"
" --manage-cgroups [m] dump/restore process' cgroups; argument can be one of\n"
" 'none', 'props', 'soft' (default), 'full' or 'strict'\n"
" 'none', 'props', 'soft' (default), 'full', 'strict'\n"
" or 'ignore'\n"
" --cgroup-root [controller:]/newroot\n"
" on dump: change the root for the controller that will\n"
" be dumped. By default, only the paths with tasks in\n"