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2014-06-06fs/ceph: replace pr_warning by pr_warnFabian Frederick1-1/+1
Update the last pr_warning callsites in fs branch Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Sage Weil <sage@inktank.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-01ceph: tidy ceph_mdsmap_decode() a littleDan Carpenter1-20/+22
I introduced a new temporary variable "info" instead of "m->m_info[mds]". Also I reversed the if condition and pulled everything in one indent level. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Alex Elder <elder@inktank.com>
2013-07-01ceph: improve error handling in ceph_mdsmap_decodeEmil Goode1-1/+3
This patch makes the following improvements to the error handling in the ceph_mdsmap_decode function: - Add a NULL check for return value from kcalloc - Make use of the variable err Signed-off-by: Emil Goode <emilgoode@gmail.com> Signed-off-by: Sage Weil <sage@inktank.com>
2013-05-01ceph: Use pseudo-random numbers to choose mdsSam Lang1-3/+5
We don't need to use up entropy to choose an mds, so use prandom_u32() to get a pseudo-random number. Also, we don't need to choose a random mds if only one mds is available, so add special casing for the common case. Fixes http://tracker.ceph.com/issues/3579 Signed-off-by: Sam Lang <sam.lang@inktank.com> Reviewed-by: Greg Farnum <greg@inktank.com> Reviewed-by: Alex Elder <elder@inktank.com>
2013-02-26ceph: update support for PGID64, PGPOOL3, OSDENC protocol featuresSage Weil1-4/+8
Support (and require) the PGID64, PGPOOL3, and OSDENC protocol features. These have been present in ceph.git since v0.42, Feb 2012. Require these features to simplify support; nobody is running older userspace. Note that the new request and reply encoding is still not in place, so the new code is not yet functional. Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Alex Elder <elder@inktank.com>
2010-10-20ceph: factor out libceph from Ceph file systemYehuda Sadeh1-5/+6
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 <sage@newdream.net>
2010-08-01ceph: track laggy state of mds from mdsmapSage Weil1-1/+5
Signed-off-by: Sage Weil <sage@newdream.net>
2009-12-21ceph: hex dump corrupt server data to KERN_DEBUGSage Weil1-0/+4
Also, print fsid using standard format, NOT hex dump. Signed-off-by: Sage Weil <sage@newdream.net>
2009-11-20ceph: decode updated mdsmap formatSage Weil1-6/+9
The mds map now uses the global_id as the 'key' (instead of the addr, which was a poor choice). This is protocol change. Signed-off-by: Sage Weil <sage@newdream.net>
2009-11-03ceph: use fixed endian encoding for ceph_entity_addrSage Weil1-0/+1
We exchange struct ceph_entity_addr over the wire and store it on disk. The sockaddr_storage.ss_family field, however, is host endianness. So, fix ss_family endianness to big endian when sending/receiving over the wire. Signed-off-by: Sage Weil <sage@newdream.net>
2009-10-14ceph: convert encode/decode macros to inlinesSage Weil1-19/+19
This avoids the fugly pass by reference and makes the code a bit easier to read. Signed-off-by: Sage Weil <sage@newdream.net>
2009-10-07ceph: fix mdsmap decoding when multiple mds's are presentSage Weil1-5/+5
A misplaced sizeof() around namelen was throwing things off. Signed-off-by: Sage Weil <sage@newdream.net>
2009-10-06ceph: MDS clientSage Weil1-0/+166
The MDS (metadata server) client is responsible for submitting requests to the MDS cluster and parsing the response. We decide which MDS to submit each request to based on cached information about the current partition of the directory hierarchy across the cluster. A stateful session is opened with each MDS before we submit requests to it, and a mutex is used to control the ordering of messages within each session. An MDS request may generate two responses. The first indicates the operation was a success and returns any result. A second reply is sent when the operation commits to disk. Note that locking on the MDS ensures that the results of updates are visible only to the updating client before the operation commits. Requests are linked to the containing directory so that an fsync will wait for them to commit. If an MDS fails and/or recovers, we resubmit requests as needed. We also reconnect existing capabilities to a recovering MDS to reestablish that shared session state. Old dentry leases are invalidated. Signed-off-by: Sage Weil <sage@newdream.net>
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