linux-toradex.git/include/linux/ceph/osdmap.h, branch v3.14.3

libceph: follow {read,write}_tier fields on osd request submission

2014-01-27T21:57:45+00:00

Overwrite ceph_osd_request::r_oloc.pool with read_tier for read ops and
write_tier for write and read+write ops (aka basic tiering support).
{read,write}_tier are part of pg_pool_t since v9.  This commit bumps
our pg_pool_t decode compat version from v7 to v9, all new fields
except for {read,write}_tier are ignored.

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

libceph: add ceph_pg_pool_by_id()

2014-01-27T21:57:40+00:00

"Lookup pool info by ID" function is hidden in osdmap.c.  Expose it to
the rest of libceph.

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

libceph: replace ceph_calc_ceph_pg() with ceph_oloc_oid_to_pg()

2014-01-27T21:57:32+00:00

Switch ceph_calc_ceph_pg() to new oloc and oid abstractions and rename
it to ceph_oloc_oid_to_pg() to make its purpose more clear.

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

libceph: introduce and start using oid abstraction

2014-01-27T21:57:28+00:00

In preparation for tiering support, which would require having two
(base and target) object names for each osd request and also copying
those names around, introduce struct ceph_object_id (oid) and a couple
helpers to facilitate those copies and encapsulate the fact that object
name is not necessarily a NUL-terminated string.

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

libceph: move ceph_file_layout helpers to ceph_fs.h

2014-01-27T21:57:20+00:00

Move ceph_file_layout helper macros and inline functions to ceph_fs.h.

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

libceph: start using oloc abstraction

2014-01-27T21:57:03+00:00

Instead of relying on pool fields in ceph_file_layout (for mapping) and
ceph_pg (for enconding), start using ceph_object_locator (oloc)
abstraction.  Note that userspace oloc currently consists of pool, key,
nspace and hash fields, while this one contains only a pool.  This is
OK, because at this point we only send (i.e. encode) olocs and never
have to receive (i.e. decode) them.

This makes keeping a copy of ceph_file_layout in every osd request
unnecessary, so ceph_osd_request::r_file_layout field is nuked.

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

libceph: define ceph_decode_pgid() only once

2013-05-02T04:17:52+00:00

There are two basically identical definitions of __decode_pgid()
in libceph, one in "net/ceph/osdmap.c" and the other in
"net/ceph/osd_client.c".  Get rid of both, and instead define
a single inline version in "include/linux/ceph/osdmap.h".

Signed-off-by: Alex Elder 
Reviewed-by: Josh Durgin

libceph: rename ceph_calc_object_layout()

2013-05-02T04:16:17+00:00

The purpose of ceph_calc_object_layout() is to fill in the pool
number and seed for a ceph_pg structure provided, based on a given
osd map and target object id.

Currently that function takes a file layout parameter, but the only
thing used out of that is its pool number.

Change the function so it takes a pool number rather than the full
file layout structure.  Only update the ceph_pg if the pool is found
in the osd map.  Get rid of few useless lines of code from the
function while there.

Since the function now very clearly just fills in the ceph_pg
structure it's provided, rename it ceph_calc_ceph_pg().

Signed-off-by: Alex Elder 
Reviewed-by: Josh Durgin

libceph: add support for HASHPSPOOL pool flag

2013-02-26T23:03:06+00:00

The legacy behavior adds the pgid seed and pool together as the input for
CRUSH.  That is problematic because each pool's PGs end up mapping to the
same OSDs: 1.5 == 2.4 == 3.3 == ...

Instead, if the HASHPSPOOL flag is set, we has the ps and pool together and
feed that into CRUSH.  This ensures that two adjacent pools will map to
an independent pseudorandom set of OSDs.

Advertise our support for this via a protocol feature flag.

Signed-off-by: Sage Weil 
Reviewed-by: Alex Elder

libceph: calculate placement based on the internal data types

2013-02-26T23:02:37+00:00

Instead of using the old ceph_object_layout struct, update our internal
ceph_calc_object_layout method to use the ceph_pg type.  This allows us to
pass the full 32-bit precision of the pgid.seed to the callers.  It also
allows some callers to avoid reaching into the request structures for the
struct ceph_object_layout fields.

Signed-off-by: Sage Weil 
Reviewed-by: Alex Elder