linux.git/net/ceph/mon_client.c, branch v4.2

libceph: a couple tweaks for wait loops

2015-06-25T08:49:29+00:00

- return -ETIMEDOUT instead of -EIO in case of timeout
- wait_event_interruptible_timeout() returns time left until timeout
  and since it can be almost LONG_MAX we had better assign it to long

Signed-off-by: Ilya Dryomov 
Reviewed-by: Alex Elder

libceph: store timeouts in jiffies, verify user input

2015-06-25T08:49:29+00:00

There are currently three libceph-level timeouts that the user can
specify on mount: mount_timeout, osd_idle_ttl and osdkeepalive.  All of
these are in seconds and no checking is done on user input: negative
values are accepted, we multiply them all by HZ which may or may not
overflow, arbitrarily large jiffies then get added together, etc.

There is also a bug in the way mount_timeout=0 is handled.  It's
supposed to mean "infinite timeout", but that's not how wait.h APIs
treat it and so __ceph_open_session() for example will busy loop
without much chance of being interrupted if none of ceph-mons are
there.

Fix all this by verifying user input, storing timeouts capped by
msecs_to_jiffies() in jiffies and using the new ceph_timeout_jiffies()
helper for all user-specified waits to handle infinite timeouts
correctly.

Signed-off-by: Ilya Dryomov 
Reviewed-by: Alex Elder

libceph: use mon_client.c/put_generic_request() more

2015-02-19T10:31:37+00:00

Signed-off-by: Ilya Dryomov

libceph: nuke pool op infrastructure

2015-02-19T10:31:37+00:00

On Mon, Dec 22, 2014 at 5:35 PM, Sage Weil  wrote:
> On Mon, 22 Dec 2014, Ilya Dryomov wrote:
>> Actually, pool op stuff has been unused for over two years - looks like
>> it was added for rbd create_snap and that got ripped out in 2012.  It's
>> unlikely we'd ever need to manage pools or snaps from the kernel client
>> so I think it makes sense to nuke it.  Sage?
>
> Yep!

Signed-off-by: Ilya Dryomov

libceph: fix sparse endianness warnings

2015-01-08T17:36:57+00:00

The only real issue is the one in auth_x.c and it came with
3.19-rc1 merge.

Signed-off-by: Ilya Dryomov

libceph: Convert pr_warning to pr_warn

2014-10-14T17:03:23+00:00

Use the more common pr_warn.

Other miscellanea:

o Coalesce formats
o Realign arguments

Signed-off-by: Joe Perches 
Signed-off-by: Ilya Dryomov

libceph: gracefully handle large reply messages from the mon

2014-09-10T16:08:32+00:00

We preallocate a few of the message types we get back from the mon.  If we
get a larger message than we are expecting, fall back to trying to allocate
a new one instead of blindly using the one we have.

CC: stable@vger.kernel.org
Signed-off-by: Sage Weil 
Reviewed-by: Ilya Dryomov

libceph: add ceph_monc_wait_osdmap()

2014-06-06T01:29:57+00:00

Add ceph_monc_wait_osdmap(), which will block until the osdmap with the
specified epoch is received or timeout occurs.

Export both of these as they are going to be needed by rbd.

Signed-off-by: Ilya Dryomov 
Reviewed-by: Sage Weil

libceph: mon_get_version request infrastructure

2014-06-06T01:29:57+00:00

Add support for mon_get_version requests to libceph.  This reuses much
of the ceph_mon_generic_request infrastructure, with one exception.
Older OSDs don't set mon_get_version reply hdr->tid even if the
original request had a non-zero tid, which makes it impossible to
lookup ceph_mon_generic_request contexts by tid in get_generic_reply()
for such replies.  As a workaround, we allocate a reply message on the
reply path.  This can probably interfere with revoke, but I don't see
a better way.

Signed-off-by: Ilya Dryomov 
Reviewed-by: Sage Weil

libceph: rename ceph_msg::front_max to front_alloc_len

2014-01-14T09:27:26+00:00

Rename front_max field of struct ceph_msg to front_alloc_len to make
its purpose more clear.

Signed-off-by: Ilya Dryomov 
Reviewed-by: Sage Weil