linux.git/include/linux/ceph/libceph.h, branch v4.6-rc2

libceph: monc hunt rate is 3s with backoff up to 30s

2016-03-25T17:51:39+00:00

Unless we are in the process of setting up a client (i.e. connecting to
the monitor cluster for the first time), apply a backoff: every time we
want to reopen a session, increase our timeout by a multiple (currently
2); when we complete the connection, reduce that multipler by 50%.

Mirrors ceph.git commit 794c86fd289bd62a35ed14368fa096c46736e9a2.

Signed-off-by: Ilya Dryomov

libceph: monc ping rate is 10s

2016-03-25T17:51:39+00:00

Split ping interval and ping timeout: ping interval is 10s; keepalive
timeout is 30s.

Make monc_ping_timeout a constant while at it - it's not actually
exported as a mount option (and the rest of tick-related settings won't
be either), so it's got no place in ceph_options.

Signed-off-by: Ilya Dryomov

libceph: add nocephx_sign_messages option

2015-11-02T22:37:46+00:00

Support for message signing was merged into 3.19, along with
nocephx_require_signatures option.  But, all that option does is allow
the kernel client to talk to clusters that don't support MSG_AUTH
feature bit.  That's pretty useless, given that it's been supported
since bobtail.

Meanwhile, if one disables message signing on the server side with
"cephx sign messages = false", it becomes impossible to use the kernel
client since it expects messages to be signed if MSG_AUTH was
negotiated.  Add nocephx_sign_messages option to support this use case.

Signed-off-by: Ilya Dryomov

libceph: stop duplicating client fields in messenger

2015-11-02T22:37:46+00:00

supported_features and required_features serve no purpose at all, while
nocrc and tcp_nodelay belong to ceph_options::flags.

Signed-off-by: Ilya Dryomov

libceph: use keepalive2 to verify the mon session is alive

2015-09-08T20:14:30+00:00

Signed-off-by: Yan, Zheng 
Signed-off-by: Ilya Dryomov

ceph: pre-allocate data structure that tracks caps flushing

2015-06-25T08:49:31+00:00

Signed-off-by: Yan, Zheng

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: nuke time_sub()

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

Unused since ceph got merged into mainline I guess.

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

libceph: expose client options through debugfs

2015-04-20T15:55:39+00:00

Add a client_options attribute for showing libceph options.

Signed-off-by: Ilya Dryomov

libceph, ceph: split ceph_show_options()

2015-04-20T15:55:38+00:00

Split ceph_show_options() into two pieces and move the piece
responsible for printing client (libceph) options into net/ceph.  This
way people adding a libceph option wouldn't have to remember to update
code in fs/ceph.

Signed-off-by: Ilya Dryomov