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dmeventd: check for running dmeventd for status

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Before initiation fifo communication, check whether there is
running dmeventd - in case there is no running instance, this
would be just blocked for 5 seconds trying to open fifo.
This commit is contained in:
Zdenek Kabelac 2024-04-08 19:44:39 +02:00
parent d8e52aed87
commit 092951f634
2 changed files with 6 additions and 0 deletions
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1
WHATS_NEW_DM
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@ -1,5 +1,6 @@
Version 1.02.198 - Version 1.02.198 -
=================== ===================
Query with dmeventd -i quickly ends when there is no running dmeventd.
Enhance dm_get_status_raid to handle mismatching status or reported legs. Enhance dm_get_status_raid to handle mismatching status or reported legs.
Create /dev/disk/by-label symlinks for DM devs that have crypto as next layer. Create /dev/disk/by-label symlinks for DM devs that have crypto as next layer.
Persist udev db for DM devs on cleanup used in initrd to rootfs transition. Persist udev db for DM devs on cleanup used in initrd to rootfs transition.

5
daemons/dmeventd/dmeventd.c
View File

@ -2080,6 +2080,11 @@ static int _info_dmeventd(const char *name, struct dm_event_fifos *fifos)
int version; int version;
int ret = 0; int ret = 0;
if (!dm_daemon_is_running(DMEVENTD_PIDFILE)) {
fprintf(stderr, "No running dmeventd instance for status query.\n");
return 0;
}
/* Get the list of registrations from the running daemon. */ /* Get the list of registrations from the running daemon. */
if (!init_fifos(fifos)) { if (!init_fifos(fifos)) {
fprintf(stderr, "Could not initiate communication with existing dmeventd.\n"); fprintf(stderr, "Could not initiate communication with existing dmeventd.\n");