talos-op-linux/fs/ceph/osd_client.h, branch master

ceph: factor out libceph from Ceph file system

2010-10-20T22:37:28+00:00

This factors out protocol and low-level storage parts of ceph into a separate libceph module living in net/ceph and include/linux/ceph. This is mostly a matter of moving files around. However, a few key pieces of the interface change as well: - ceph_client becomes ceph_fs_client and ceph_client, where the latter captures the mon and osd clients, and the fs_client gets the mds client and file system specific pieces. - Mount option parsing and debugfs setup is correspondingly broken into two pieces. - The mon client gets a generic handler callback for otherwise unknown messages (mds map, in this case). - The basic supported/required feature bits can be expanded (and are by ceph_fs_client). No functional change, aside from some subtle error handling cases that got cleaned up in the refactoring process. Signed-off-by: Sage Weil

ceph-rbd: osdc support for osd call and rollback operations

2010-10-20T22:37:25+00:00

This will be used for rbd snapshots administration. Signed-off-by: Yehuda Sadeh

ceph: messenger and osdc changes for rbd

2010-10-20T22:37:18+00:00

Allow the messenger to send/receive data in a bio. This is added so that we wouldn't need to copy the data into pages or some other buffer when doing IO for an rbd block device. We can now have trailing variable sized data for osd ops. Also osd ops encoding is more modular. Signed-off-by: Yehuda Sadeh Signed-off-by: Sage Weil

ceph: refactor osdc requests creation functions

2010-10-20T22:36:01+00:00

The osd requests creation are being decoupled from the vino parameter, allowing clients using the osd to use other arbitrary object names that are not necessarily vino based. Also, calc_raw_layout now takes a snap id. Signed-off-by: Yehuda Sadeh Signed-off-by: Sage Weil

ceph: resubmit requests on pg mapping change (not just primary change)

2010-05-11T16:53:56+00:00

OSD requests need to be resubmitted on any pg mapping change, not just when the pg primary changes. Resending only when the primary changes results in occasional 'hung' requests during osd cluster recovery or rebalancing. Signed-off-by: Sage Weil

ceph: don't use writeback_control in writepages completion

2010-05-06T04:31:40+00:00

The ->writepages writeback_control is not still valid in the writepages completion. We were touching it solely to adjust pages_skipped when there was a writeback error (EIO, ENOSPC, EPERM due to bad osd credentials), causing an oops in the writeback code shortly thereafter. Updating pages_skipped on error isn't correct anyway, so let's just rip out this (clearly broken) code to pass the wbc to the completion. Signed-off-by: Sage Weil

ceph: rename r_sent_stamp r_stamp

2010-03-23T14:47:00+00:00

Make variable name slightly more generic, since it will (soon) reflect either the time the request was sent OR the time it was last determined to be still retrying. Signed-off-by: Sage Weil

ceph: reset osd after relevant messages timed out

2010-03-04T19:26:35+00:00

This simplifies the process of timing out messages. We keep lru of current messages that are in flight. If a timeout has passed, we reset the osd connection, so that messages will be retransmitted. This is a failsafe in case we hit some sort of problem sending out message to the OSD. Normally, we'll get notification via an updated osdmap if there are problems. If a request is older than the keepalive timeout, send a keepalive to ensure we detect any breaks in the TCP connection. Signed-off-by: Yehuda Sadeh Signed-off-by: Sage Weil

ceph: use single osd op reply msg

2010-03-01T23:20:02+00:00

Use a single ceph_msg for the osd reply, even when we are getting multiple replies. Signed-off-by: Sage Weil

ceph: put unused osd connections on lru

2010-02-11T19:48:48+00:00

Instead of removing osd connection immediately when the requests list is empty, put the osd connection on an lru. Only if that osd has not been used for more than a specified time, will it be removed. Signed-off-by: Yehuda Sadeh Signed-off-by: Sage Weil