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From: Venky Shankar <vshankar@redhat.com>
To: jlayton@redhat.com, idryomov@gmail.com, lhenriques@suse.de
Cc: pdonnell@redhat.com, ceph-devel@vger.kernel.org,
	Venky Shankar <vshankar@redhat.com>
Subject: [PATCH v4 5/5] doc: document new CephFS mount device syntax
Date: Wed, 14 Jul 2021 15:35:54 +0530	[thread overview]
Message-ID: <20210714100554.85978-6-vshankar@redhat.com> (raw)
In-Reply-To: <20210714100554.85978-1-vshankar@redhat.com>

Signed-off-by: Venky Shankar <vshankar@redhat.com>
---
 Documentation/filesystems/ceph.rst | 25 ++++++++++++++++++++++---
 1 file changed, 22 insertions(+), 3 deletions(-)

diff --git a/Documentation/filesystems/ceph.rst b/Documentation/filesystems/ceph.rst
index 7d2ef4e27273..4942e018db85 100644
--- a/Documentation/filesystems/ceph.rst
+++ b/Documentation/filesystems/ceph.rst
@@ -82,7 +82,7 @@ Mount Syntax
 
 The basic mount syntax is::
 
- # mount -t ceph monip[:port][,monip2[:port]...]:/[subdir] mnt
+ # mount -t ceph user@fsid.fs_name=/[subdir] mnt -o mon_addr=monip1[:port][/monip2[:port]]
 
 You only need to specify a single monitor, as the client will get the
 full list when it connects.  (However, if the monitor you specify
@@ -90,16 +90,35 @@ happens to be down, the mount won't succeed.)  The port can be left
 off if the monitor is using the default.  So if the monitor is at
 1.2.3.4::
 
- # mount -t ceph 1.2.3.4:/ /mnt/ceph
+ # mount -t ceph cephuser@07fe3187-00d9-42a3-814b-72a4d5e7d5be.cephfs=/ /mnt/ceph -o mon_addr=1.2.3.4
 
 is sufficient.  If /sbin/mount.ceph is installed, a hostname can be
-used instead of an IP address.
+used instead of an IP address and the cluster FSID can be left out
+(as the mount helper will fill it in by reading the ceph configuration
+file)::
 
+  # mount -t ceph cephuser@cephfs=/ /mnt/ceph -o mon_addr=mon-addr
 
+Multiple monitor addresses can be passed by separating each address with a slash (`/`)::
+
+  # mount -t ceph cephuser@cephfs=/ /mnt/ceph -o mon_addr=192.168.1.100/192.168.1.101
+
+When using the mount helper, monitor address can be read from ceph
+configuration file if available. Note that, the cluster FSID (passed as part
+of the device string) is validated by checking it with the FSID reported by
+the monitor.
 
 Mount Options
 =============
 
+  mon_addr=ip_address[:port][/ip_address[:port]]
+	Monitor address to the cluster. This is used to bootstrap the
+        connection to the cluster. Once connection is established, the
+        monitor addresses in the monitor map are followed.
+
+  fsid=cluster-id
+	FSID of the cluster (from `ceph fsid` command).
+
   ip=A.B.C.D[:N]
 	Specify the IP and/or port the client should bind to locally.
 	There is normally not much reason to do this.  If the IP is not
-- 
2.27.0


  parent reply	other threads:[~2021-07-14 10:06 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-14 10:05 [PATCH v4 0/5] ceph: new mount device syntax Venky Shankar
2021-07-14 10:05 ` [PATCH v4 1/5] ceph: generalize addr/ip parsing based on delimiter Venky Shankar
2021-07-14 10:05 ` [PATCH v4 2/5] ceph: rename parse_fsid() to ceph_parse_fsid() and export Venky Shankar
2021-07-14 10:05 ` [PATCH v4 3/5] ceph: new device mount syntax Venky Shankar
2021-07-14 10:05 ` [PATCH v4 4/5] ceph: record updated mon_addr on remount Venky Shankar
2021-07-14 16:17   ` Jeff Layton
2021-07-14 16:35     ` Luis Henriques
2021-07-14 18:15       ` Jeff Layton
2021-07-15 11:42         ` Luis Henriques
2021-07-15  5:52     ` Venky Shankar
2021-07-14 18:05   ` Jeff Layton
2021-07-14 10:05 ` Venky Shankar [this message]
2021-07-14 15:33 ` [PATCH v4 0/5] ceph: new mount device syntax Jeff Layton
2021-07-16 18:47 ` Jeff Layton
2021-07-19  7:03   ` Venky Shankar

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