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config/rpc: add new option --mntns-compat-mode for old mount engine

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We plan to switch to Mounts-v2 engine for restoring mounts by default,
this options is to allow switching to old engine. This patch only adds
an option, no engine behind it yet.

Cherry-picked from Virtuozzo criu:
https://src.openvz.org/projects/OVZ/repos/criu/commits/503f9ad2c

Changes: allow --mntns-compat-mode option only on restore and only if
MOVE_MOUNT_SET_GROUP is supported (this also requires change in
unittest/mock.c), change id in rpc criu_opts.

Signed-off-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
This commit is contained in:
Pavel Tikhomirov 2020-05-25 17:43:48 +03:00 • committed by Andrei Vagin
parent f6b52c711e
commit f2d1c7fab8
11 changed files with 62 additions and 0 deletions
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@ -137,6 +137,7 @@ message criu_opts {
optional int32 pidfd_store_sk = 62;
optional string lsm_mount_context = 63;
optional criu_network_lock_method network_lock = 64 [default = IPTABLES];
optional bool mntns_compat_mode = 65;
/* optional bool check_mounts = 128; */
}