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