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author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-19 09:43:06 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-19 09:43:06 -0700 |
commit | fc7f99cf36ebae853639dabb43bc2f0098c59aef (patch) | |
tree | 3ca7050397f515f91ef98f8b6293f9f7fd84ef02 /fs/ceph/mdsmap.h | |
parent | 0a492fdef8aa241f6139e6455e852cc710ae8ed1 (diff) | |
parent | f1a3d57213fe264b4cf584e78bac36aaf9998729 (diff) | |
download | op-kernel-dev-fc7f99cf36ebae853639dabb43bc2f0098c59aef.zip op-kernel-dev-fc7f99cf36ebae853639dabb43bc2f0098c59aef.tar.gz |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (205 commits)
ceph: update for write_inode API change
ceph: reset osd after relevant messages timed out
ceph: fix flush_dirty_caps race with caps migration
ceph: include migrating caps in issued set
ceph: fix osdmap decoding when pools include (removed) snaps
ceph: return EBADF if waiting for caps on closed file
ceph: set osd request message front length correctly
ceph: reset front len on return to msgpool; BUG on mismatched front iov
ceph: fix snaptrace decoding on cap migration between mds
ceph: use single osd op reply msg
ceph: reset bits on connection close
ceph: remove bogus mds forward warning
ceph: remove fragile __map_osds optimization
ceph: fix connection fault STANDBY check
ceph: invalidate_authorizer without con->mutex held
ceph: don't clobber write return value when using O_SYNC
ceph: fix client_request_forward decoding
ceph: drop messages on unregistered mds sessions; cleanup
ceph: fix comments, locking in destroy_inode
ceph: move dereference after NULL test
...
Fix trivial conflicts in Documentation/ioctl/ioctl-number.txt
Diffstat (limited to 'fs/ceph/mdsmap.h')
-rw-r--r-- | fs/ceph/mdsmap.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/fs/ceph/mdsmap.h b/fs/ceph/mdsmap.h new file mode 100644 index 0000000..eacc131 --- /dev/null +++ b/fs/ceph/mdsmap.h @@ -0,0 +1,54 @@ +#ifndef _FS_CEPH_MDSMAP_H +#define _FS_CEPH_MDSMAP_H + +#include "types.h" + +/* + * mds map - describe servers in the mds cluster. + * + * we limit fields to those the client actually xcares about + */ +struct ceph_mds_info { + u64 global_id; + struct ceph_entity_addr addr; + s32 state; + int num_export_targets; + u32 *export_targets; +}; + +struct ceph_mdsmap { + u32 m_epoch, m_client_epoch, m_last_failure; + u32 m_root; + u32 m_session_timeout; /* seconds */ + u32 m_session_autoclose; /* seconds */ + u64 m_max_file_size; + u32 m_max_mds; /* size of m_addr, m_state arrays */ + struct ceph_mds_info *m_info; + + /* which object pools file data can be stored in */ + int m_num_data_pg_pools; + u32 *m_data_pg_pools; + u32 m_cas_pg_pool; +}; + +static inline struct ceph_entity_addr * +ceph_mdsmap_get_addr(struct ceph_mdsmap *m, int w) +{ + if (w >= m->m_max_mds) + return NULL; + return &m->m_info[w].addr; +} + +static inline int ceph_mdsmap_get_state(struct ceph_mdsmap *m, int w) +{ + BUG_ON(w < 0); + if (w >= m->m_max_mds) + return CEPH_MDS_STATE_DNE; + return m->m_info[w].state; +} + +extern int ceph_mdsmap_get_random_mds(struct ceph_mdsmap *m); +extern struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end); +extern void ceph_mdsmap_destroy(struct ceph_mdsmap *m); + +#endif |