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toolcontext: action for LVM_RUN_BY_DMEVENTD env var

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When LVM_RUN_BY_DMEVENTD is set to 1, ensure there will
be no interaction with dmeventd.
This commit is contained in:
Zdenek Kabelac 2017-01-23 14:24:27 +01:00
parent 836eb122ce
commit ec93f37b86
2 changed files with 8 additions and 0 deletions
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3
lib/commands/toolcontext.c
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@ -192,6 +192,9 @@ static int _get_env_vars(struct cmd_context *cmd)
}
}
if (strcmp((getenv("LVM_RUN_BY_DMEVENTD") ? : "0"), "1") == 0)
init_run_by_dmeventd(cmd);
return 1;
}

5
man/lvm.8.in
View File

@ -668,6 +668,11 @@ File descriptor to use for report output from LVM commands.
Name of default command profile to use for LVM commands. This profile
is overriden by direct use of \fB\-\-commandprofile\fP command line option.
.TP
.B LVM_RUN_BY_DMEVENTD
This variable is normally set by dmeventd plugin to inform lvm2 command
it is running from dmeventd plugin so lvm2 takes some extra action
to avoid comunication and deadlocks with dmeventd.
.TP
.B LVM_SYSTEM_DIR
Directory containing \fBlvm.conf\fP(5) and other LVM system files.
Defaults to "\fI#DEFAULT_SYS_DIR#\fP".