osd/osd_types: add blocked_by to pg_stat_t

Signed-off-by: Sage Weil <sage@redhat.com>
erasure-code: ErasureCode base class

Add the ErasureCode base class for ErasureCodeJerasure and
ErasureCodeIsa, for methods that can be shared among all plugins.

http://tracker.ceph.com/issues/8496 Fixes: #8496

Signed-off-by: Loic Dachary <loic@dachary.org>
erasure-code: move to ErasureCode::{encode,decode}{,chunk}

The bulk of ErasureCode{Jerasure,Isa}::encode and
ErasureCode{Jerasure,Isa}::decode is dealing with alignment and buffer
allocation. This is moved to ErasureCode::encode and ErasureCode::decode
respectively.

The jerasure/isa specific code is isolated in the new
ErasureCode{Jerasure,Isa}::encode_chunks and
ErasureCode{Jerasure,Isa}::decode_chunks virtual functions.

http://tracker.ceph.com/issues/8496 Refs: #8496

Signed-off-by: Loic Dachary <loic@dachary.org>
erasure-code: move to ErasureCode::minimum_to_decode*

The ErasureCode{Jerasure,Isa}::minimum_to_decode and
ErasureCode{Jerasure,Isa}::minimum_to_decode_with_cost methods are moved
verbatim to the ErasureCode base class.

http://tracker.ceph.com/issues/8496 Refs: #8496

Signed-off-by: Loic Dachary <loic@dachary.org>
erasure-code: move to ErasureCode::to_{int,bool}

The parameter parser helpers to_int and to_bool are moved from
ErasureCode{Jerasure,Isa} to ErasureCode.

The prototype is modified to return a status instead of the value. An
error ostream is provided as the last argument because ErasureCode
cannot use dout() or derr().

http://tracker.ceph.com/issues/8496 Refs: #8496

Signed-off-by: Loic Dachary <loic@dachary.org>
erasure-code: move to ErasureCode::decode_concat

It does not belong to ErasureCodeInterface which is supposed to not have
any implementation.

Signed-off-by: Loic Dachary <loic@dachary.org>
erasure-code: rework ErasureCode*::parse methods

The ErasureCode::parse virtual function is derived in
ErasureCode{Jerasure,Isa}. It is reworked to share parsing arguments the
various techniques have in common. The logic is otherwise unmodified.

http://tracker.ceph.com/issues/8496 Refs: #8496

Signed-off-by: Loic Dachary <loic@dachary.org>
rados: add {read,write}_ops to df json

Backport: firefly, dumpling
Signed-off-by: Sage Weil <sage@redhat.com>
when starting an OSD, pass in the cluster name

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
use  name in /var/lib/ceph paths

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
use cluster name when checking the host

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
osd/PG: populate pg_stats_t blocked_by

Keep a PG member for OSDs that current block us, and fill it into the
stats struct when we publish.  Use a vector<int> in pg_stats_t to limit the
overhead (memory, decoding) on this list once it is static.

Signed-off-by: Sage Weil <sage@redhat.com>
mon/OSDMonitor: clean up 'osd perf' command placement

This doesn't need an OSDMap; move it out of that block.

Signed-off-by: Sage Weil <sage@redhat.com>
mon/PGMap: s/osdid/osd/ in 'osd perf' plaintext heading

Signed-off-by: Sage Weil <sage@redhat.com>
mds: Make min/max UID configurable for who is allowed to create a snapshot

This way administrators can configure which UIDs are allowed to create
snapshots on CephFS.

In certain situations it might be desirable that regular users are not allowed
to create snapshots. For example on shared hosting environments.

Fixes: #9029
allow passing a --cluster flag to the init script

It will fallback to looking at /etc/ceph/$cluster.conf
otherwise.

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
make ceph-disk use the new init flag for cluster

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
osd: fix pg epoch floor tracking

If you call erase() on a multiset it will delete all instances of a value;
we only want to delete one of them.  Fix this by passing an iterator.

Backport: firefly
Signed-off-by: Sage Weil <sage@redhat.com>
mds: Also check min/max uid on snap removal

Not only check if the uid is correct when creating a snapshot, but also
verify if the UID is correct when trying to remove a snapshot.

Fixes: #9029
test_librbd_fsx: also flatten as part of randomize_parent_overlap

With randomize_parent_overlap fsx will randomly truncate base images
after they have been cloned from.  This throws flatten into the mix:
base image will be flattened with 2/16 chance (equal to the chance of
leaving the image intact).

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>