From: Benoît Knecht <bknecht@protonmail.ch>
Date: Mon, 6 Dec 2021 08:14:56 +0000 (+0100)
Subject: mon: Abort device health when device not found
X-Git-Tag: v15.2.17~97^2~1
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=700adaba330362378acad976079770bff648b77c;p=ceph.git

mon: Abort device health when device not found

If `store->get_devname()` returns an empty device name, it means it couldn't
determine the device that backs the monitor DB store directory.

This can happen if `ceph-mon` runs with `PrivateDevices=yes` in systemd, or
within a container where the host `/dev` isn't exposed.

This commit makes sure we abort trying to get the device health at that point,
and return an appropriate error.

Signed-off-by: Benoît Knecht <bknecht@protonmail.ch>
(cherry picked from commit c05a3b769dccf5fe839a2150e39d899516469164)
---

diff --git a/src/mon/Monitor.cc b/src/mon/Monitor.cc
index 908d062ca8b8..786163790ce7 100644
--- a/src/mon/Monitor.cc
+++ b/src/mon/Monitor.cc
@@ -378,6 +378,11 @@ int Monitor::do_admin_command(
     cmd_getval(cmdmap, "devid", want_devid);
 
     string devname = store->get_devname();
+    if (devname.empty()) {
+      err << "could not determine device name for " << store->get_path();
+      r = -ENOENT;
+      goto abort;
+    }
     set<string> devnames;
     get_raw_devices(devname, &devnames);
     json_spirit::mObject json_map;
diff --git a/src/mon/MonitorDBStore.h b/src/mon/MonitorDBStore.h
index 6dba96064be0..9e4c57b06c8b 100644
--- a/src/mon/MonitorDBStore.h
+++ b/src/mon/MonitorDBStore.h
@@ -57,6 +57,10 @@ class MonitorDBStore
     return devname;
   }
 
+  std::string get_path() {
+    return path;
+  }
+
   std::shared_ptr<PriorityCache::PriCache> get_priority_cache() const {
     return db->get_priority_cache();
   }