Gitweb: http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=ec93f37b86977380b... Commit: ec93f37b86977380b59080981fb912ff30dd80ab Parent: 836eb122cec35c1f00281968d92f9d85e67652d7 Author: Zdenek Kabelac zkabelac@redhat.com AuthorDate: Mon Jan 23 14:24:27 2017 +0100 Committer: Zdenek Kabelac zkabelac@redhat.com CommitterDate: Mon Jan 23 14:55:47 2017 +0100

toolcontext: action for LVM_RUN_BY_DMEVENTD env var

When LVM_RUN_BY_DMEVENTD is set to 1, ensure there will be no interaction with dmeventd. --- lib/commands/toolcontext.c | 3 +++ man/lvm.8.in | 5 +++++ 2 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/lib/commands/toolcontext.c b/lib/commands/toolcontext.c index 2843bf8..678ee8a 100644 --- a/lib/commands/toolcontext.c +++ b/lib/commands/toolcontext.c @@ -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; }

diff --git a/man/lvm.8.in b/man/lvm.8.in index f1ffc7a..cad724b 100644 --- a/man/lvm.8.in +++ b/man/lvm.8.in @@ -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".