From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Benjamin Marzinski Date: Mon, 15 Jun 2020 17:00:54 -0500 Subject: [PATCH] multipathd: add "del maps" multipathd command This will flush all multipath devices. Signed-off-by: Benjamin Marzinski --- libmultipath/devmapper.c | 7 +++++-- libmultipath/devmapper.h | 2 +- multipath/main.c | 2 +- multipathd/cli.c | 1 + multipathd/cli_handlers.c | 19 +++++++++++++++++++ multipathd/cli_handlers.h | 1 + multipathd/main.c | 3 ++- multipathd/main.h | 1 + 8 files changed, 31 insertions(+), 5 deletions(-) diff --git a/libmultipath/devmapper.c b/libmultipath/devmapper.c index cda83ce4..7f98bf9d 100644 --- a/libmultipath/devmapper.c +++ b/libmultipath/devmapper.c @@ -951,7 +951,7 @@ dm_flush_map_nopaths(const char * mapname, int deferred_remove) #endif -int dm_flush_maps (int retries) +int dm_flush_maps (int need_suspend, int retries) { int r = 1; struct dm_task *dmt; @@ -974,7 +974,10 @@ int dm_flush_maps (int retries) r = 0; do { - r |= dm_suspend_and_flush_map(names->name, retries); + if (need_suspend) + r |= dm_suspend_and_flush_map(names->name, retries); + else + r |= dm_flush_map(names->name); next = names->next; names = (void *) names + next; } while (next); diff --git a/libmultipath/devmapper.h b/libmultipath/devmapper.h index adb55000..7e8812ad 100644 --- a/libmultipath/devmapper.h +++ b/libmultipath/devmapper.h @@ -55,7 +55,7 @@ int dm_flush_map_nopaths(const char * mapname, int deferred_remove); #define dm_suspend_and_flush_map(mapname, retries) \ _dm_flush_map(mapname, 1, 0, 1, retries) int dm_cancel_deferred_remove(struct multipath *mpp); -int dm_flush_maps (int retries); +int dm_flush_maps (int need_suspend, int retries); int dm_fail_path(const char * mapname, char * path); int dm_reinstate_path(const char * mapname, char * path); int dm_queue_if_no_path(const char *mapname, int enable); diff --git a/multipath/main.c b/multipath/main.c index 78822ee1..7ab3102f 100644 --- a/multipath/main.c +++ b/multipath/main.c @@ -1127,7 +1127,7 @@ main (int argc, char *argv[]) goto out; } else if (conf->remove == FLUSH_ALL) { - r = dm_flush_maps(retries) ? RTVL_FAIL : RTVL_OK; + r = dm_flush_maps(1, retries) ? RTVL_FAIL : RTVL_OK; goto out; } while ((r = configure(conf, cmd, dev_type, dev)) == RTVL_RETRY) diff --git a/multipathd/cli.c b/multipathd/cli.c index 800c0fbe..bdc9fb10 100644 --- a/multipathd/cli.c +++ b/multipathd/cli.c @@ -568,6 +568,7 @@ cli_init (void) { add_handler(DEL+PATH, NULL); add_handler(ADD+MAP, NULL); add_handler(DEL+MAP, NULL); + add_handler(DEL+MAPS, NULL); add_handler(SWITCH+MAP+GROUP, NULL); add_handler(RECONFIGURE, NULL); add_handler(SUSPEND+MAP, NULL); diff --git a/multipathd/cli_handlers.c b/multipathd/cli_handlers.c index 31c3d9fd..782bb003 100644 --- a/multipathd/cli_handlers.c +++ b/multipathd/cli_handlers.c @@ -852,6 +852,25 @@ cli_del_map (void * v, char ** reply, int * len, void * data) return rc; } +int +cli_del_maps (void *v, char **reply, int *len, void *data) +{ + struct vectors * vecs = (struct vectors *)data; + struct multipath *mpp; + int i, ret = 0; + + condlog(2, "remove maps (operator)"); + vector_foreach_slot(vecs->mpvec, mpp, i) { + if (flush_map(mpp, vecs, 0)) + ret++; + else + i--; + } + /* flush any multipath maps that aren't currently known by multipathd */ + ret |= dm_flush_maps(0, 0); + return ret; +} + int cli_reload(void *v, char **reply, int *len, void *data) { diff --git a/multipathd/cli_handlers.h b/multipathd/cli_handlers.h index 0f451064..6f57b429 100644 --- a/multipathd/cli_handlers.h +++ b/multipathd/cli_handlers.h @@ -26,6 +26,7 @@ int cli_add_path (void * v, char ** reply, int * len, void * data); int cli_del_path (void * v, char ** reply, int * len, void * data); int cli_add_map (void * v, char ** reply, int * len, void * data); int cli_del_map (void * v, char ** reply, int * len, void * data); +int cli_del_maps (void * v, char ** reply, int * len, void * data); int cli_switch_group(void * v, char ** reply, int * len, void * data); int cli_reconfigure(void * v, char ** reply, int * len, void * data); int cli_resize(void * v, char ** reply, int * len, void * data); diff --git a/multipathd/main.c b/multipathd/main.c index 1d9ce7f7..1d0579e9 100644 --- a/multipathd/main.c +++ b/multipathd/main.c @@ -631,7 +631,7 @@ sync_maps_state(vector mpvec) sync_map_state(mpp); } -static int +int flush_map(struct multipath * mpp, struct vectors * vecs, int nopaths) { int r; @@ -1551,6 +1551,7 @@ uxlsnrloop (void * ap) set_handler_callback(DEL+PATH, cli_del_path); set_handler_callback(ADD+MAP, cli_add_map); set_handler_callback(DEL+MAP, cli_del_map); + set_handler_callback(DEL+MAPS, cli_del_maps); set_handler_callback(SWITCH+MAP+GROUP, cli_switch_group); set_unlocked_handler_callback(RECONFIGURE, cli_reconfigure); set_handler_callback(SUSPEND+MAP, cli_suspend); diff --git a/multipathd/main.h b/multipathd/main.h index 7bb8463f..5dff17e5 100644 --- a/multipathd/main.h +++ b/multipathd/main.h @@ -28,6 +28,7 @@ int ev_add_path (struct path *, struct vectors *, int); int ev_remove_path (struct path *, struct vectors *, int); int ev_add_map (char *, const char *, struct vectors *); int ev_remove_map (char *, char *, int, struct vectors *); +int flush_map(struct multipath *, struct vectors *, int); int set_config_state(enum daemon_status); void * mpath_alloc_prin_response(int prin_sa); int prin_do_scsi_ioctl(char *, int rq_servact, struct prin_resp * resp, -- 2.17.2