2
0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-23 12:43:55 +08:00
linux-next/net/ceph
Ilya Dryomov e2b149cc4b crush: add chooseleaf_vary_r tunable
The current crush_choose_firstn code will re-use the same 'r' value for
the recursive call.  That means that if we are hitting a collision or
rejection for some reason (say, an OSD that is marked out) and need to
retry, we will keep making the same (bad) choice in that recursive
selection.

Introduce a tunable that fixes that behavior by incorporating the parent
'r' value into the recursive starting point, so that a different path
will be taken in subsequent placement attempts.

Note that this was done from the get-go for the new crush_choose_indep
algorithm.

This was exposed by a user who was seeing PGs stuck in active+remapped
after reweight-by-utilization because the up set mapped to a single OSD.

Reflects ceph.git commit a8e6c9fbf88bad056dd05d3eb790e98a5e43451a.

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
2014-04-04 21:07:26 -07:00
..
crush crush: add chooseleaf_vary_r tunable 2014-04-04 21:07:26 -07:00
armor.c libceph: Fix base64-decoding when input ends in newline. 2011-03-15 09:14:02 -07:00
auth_none.c libceph: Fix NULL pointer dereference in auth client code 2013-07-03 15:32:55 -07:00
auth_none.h net: 8021q/bluetooth/bridge/can/ceph: Remove extern from function prototypes 2013-10-19 19:12:11 -04:00
auth_x_protocol.h ceph: factor out libceph from Ceph file system 2010-10-20 15:37:28 -07:00
auth_x.c libceph: wrap auth ops in wrapper functions 2013-05-01 21:17:14 -07:00
auth_x.h net: 8021q/bluetooth/bridge/can/ceph: Remove extern from function prototypes 2013-10-19 19:12:11 -04:00
auth.c libceph: wrap auth methods in a mutex 2013-05-01 21:17:15 -07:00
buffer.c libceph: add ceph_kv{malloc,free}() and switch to them 2014-01-26 12:34:23 +02:00
ceph_common.c libceph: add ceph_kv{malloc,free}() and switch to them 2014-01-26 12:34:23 +02:00
ceph_fs.c ceph: fix file mode calculation 2011-07-19 11:25:04 -07:00
ceph_hash.c net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
ceph_strings.c libceph: update ceph_osd_op_name() 2013-02-18 12:20:18 -06:00
crypto.c libceph: eliminate sparse warnings 2013-02-25 15:37:18 -06:00
crypto.h net: 8021q/bluetooth/bridge/can/ceph: Remove extern from function prototypes 2013-10-19 19:12:11 -04:00
debugfs.c libceph: rename ceph_osd_request::r_{oloc,oid} to r_base_{oloc,oid} 2014-01-27 23:57:49 +02:00
Kconfig net/ceph: remove depends on CONFIG_EXPERIMENTAL 2013-01-11 11:39:33 -08:00
Makefile libceph: create source file "net/ceph/snapshot.c" 2013-05-01 21:20:08 -07:00
messenger.c libceph: fix oops in ceph_msg_data_{pages,pagelist}_advance() 2014-04-04 21:07:15 -07:00
mon_client.c libceph: rename ceph_msg::front_max to front_alloc_len 2014-01-14 11:27:26 +02:00
msgpool.c libceph: initialize msgpool message types 2012-07-30 09:29:50 -07:00
osd_client.c libceph: add support for CEPH_OSD_OP_SETALLOCHINT osd op 2014-04-03 10:33:51 +08:00
osdmap.c libceph: a per-osdc crush scratch buffer 2014-04-03 10:33:50 +08:00
pagelist.c ceph: use list_move_tail instead of list_del/list_add_tail 2012-10-01 14:30:49 -05:00
pagevec.c libceph: drop return value from page vector copy routines 2013-02-19 19:14:05 -06:00
snapshot.c libceph: create source file "net/ceph/snapshot.c" 2013-05-01 21:20:08 -07:00