glusterfs-snapshot.git/xlators/performance/write-behind, branch development

performance/write-behind: invoke request queue processing if

2013-08-14T09:11:58+00:00

we find fd marked bad while trying to fulfill lies.

* flush was queued behind some unfulfilled write.
* A previously wound write returned an error and hence fd was marked
  bad with corresponding error.
* wb_fulfill_head (invocation probably rooted in wb_flush), before
  winding checks for failures of previous writes and since there was a
  failure, calls wb_head_done without even winding one request in head.
* wb_head_done unrefs all the requests in list "head".
* since flush was last operation on fd (and most likely last operation
  on inode itself), no one invokes wb_process_queue and flush is stuck
  in request queue for eternity.

Change-Id: I3b5b114a1c401d477dd7ff64fb6119b43fda2d18
BUG: 988642
Signed-off-by: Raghavendra G 
Reviewed-on: http://review.gluster.org/5398
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

write-behind: preserve error returned as-is

2013-07-25T01:39:13+00:00

Change-Id: Ib766403774c1323e0bbddafedeaa47e7fa3a59fa
Signed-off-by: Amar Tumballi 
BUG: 987415
Reviewed-on: http://review.gluster.org/5296
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

performance/write-behind: Enable write-behind when strict_O_DIRECT is not set.

2013-05-28T17:05:28+00:00

When open() with O_DIRECT happens, write-behind was being disabled for the
fd irrespective of strict_O_DIRECT option. This commit disables write-behind
only when strict_O_DIRECT is enabled.

Change-Id: Ieef180e52910c3bf64d46b26b0e5dc3b8542f6d2
BUG: 923556
Signed-off-by: Vijay Bellur 
Reviewed-on: http://review.gluster.org/4697
Tested-by: Gluster Build System 
Reviewed-by: Jeff Darcy

mount/fuse: enable fuse real async dio when available

2013-05-16T00:19:06+00:00

fuse has support for optimized async. direct I/O handling via the
FUSE_ASYNC_DIO init flag. Enable FUSE_ASYNC_DIO when advertised
by fuse.

performance/write-behind: fix dio hang

Also fix a hang observed during aio-stress testing due to conflicting
request handling in write-behind. Overlapping requests are skipped
in pick_winds and may never continue when the conflicting write in
progress returns. Add a wb_process_queue() call after a non-wb request
completes to keep the queue moving.

BUG: 963258
Change-Id: Ifba6e8aba7a7790b288a32067706b75f263105d4
Signed-off-by: Brian Foster 
Reviewed-on: http://review.gluster.org/5014
Reviewed-by: Anand Avati 
Tested-by: Gluster Build System

performance/write-behind: guarantee non-overlapping concurrent writes

2013-02-20T19:03:14+00:00

Maintain a list of writes (either written behind or SYNC) which are
currently "in progress" (i.e, STACK_WIND'ed towards server) and hold
off any new STACK_WIND of write (either written behind or SYNC) which
overlaps with any of the "in progress" writes.

This is a guarantee which AFR's eager-lock depends upon (though not
strictly a write-behind requirement)

Change-Id: Icedd0b51b440366a906dc9223d62b7fd6ef2ca03
BUG: 857673
Signed-off-by: Anand Avati 
Reviewed-on: http://review.gluster.org/4551
Tested-by: Gluster Build System 
Reviewed-by: Raghavendra G

call-stub: internal refactor

2013-02-20T00:07:59+00:00

- re-structure members of call_stub_t with new simpler layout
- easier to inspect call_stub_t contents in gdb now
- fix a bunch of double unrefs and double frees in cbk stub
- change all STACK_UNWIND to STACK_UNWIND_STRICT and thereby fixed
  a lot of bad params
- implement new API call_unwind_error() which can even be called on
  fop_XXX_stub(), and not necessarily fop_XXX_cbk_stub()

Change-Id: Idf979f14d46256af0afb9658915cc79de157b2d7
BUG: 846240
Signed-off-by: Anand Avati 
Reviewed-on: http://review.gluster.org/4520
Tested-by: Gluster Build System 
Reviewed-by: Jeff Darcy

performance/write-behind: mark fd bad if any written behind writes fail.

2013-02-18T07:33:38+00:00

Change-Id: I515fc26c61e1ea929a3049b3001c58a64f3e6c87
BUG: 765473
Signed-off-by: Raghavendra G 
Reviewed-on: http://review.gluster.org/4515
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

Use proper libtool option -avoid-version instead of bogus -avoidversion

2013-02-07T23:12:56+00:00

Change-Id: I1c9541058c7d07786539a3266ca125a6a15287d8
BUG: 859835
Signed-off-by: Anand Avati 
Original-author: Kacper Kowalik (Xarthisius) 
Signed-off-by: Kacper Kowalik (Xarthisius) 
Reviewed-on: http://review.gluster.org/3967
Tested-by: Gluster Build System

performance/write-behind: do not try to take LOCK in forget

2013-02-03T22:09:49+00:00

LOCK attempt in wb_forget is unnecessary

Change-Id: Ibdedc23d0c829c34aedd6fc5bc0e0a584b832514
BUG: 903566
Signed-off-by: Raghavendra Bhat 
Reviewed-on: http://review.gluster.org/4423
Reviewed-by: Anand Avati 
Tested-by: Gluster Build System

glusterd/cli: Updated the options descriptions for "volume set help"

2013-01-22T07:03:57+00:00

Change-Id: I0db00b7334bb9707ab48bd661ac03a3ad818d6e4
BUG: 893458
Signed-off-by: Avra Sengupta 
Reviewed-on: http://review.gluster.org/4393
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati