glusterfs.git/xlators/performance, branch 2.0.0rc7

fixes crash in write-behind

2009-03-22T07:44:32+00:00

in wb_flush, there was a chance that wb_process_queue()
was called with NULL frame, which causes crash.

Signed-off-by: Anand V. Avati

Add return after STACK_UNWIND

2009-03-18T05:37:07+00:00

We must add a 'return' after a STACK_UNWIND due to a stub creation
failure, because if we dont, we'll end up adding a NULL stub to the
worker thread request queue.

Signed-off-by: Anand V. Avati

Moving few translators which are not well tested, are in beta stage to 'testing/' directory.

2009-03-18T02:56:29+00:00

This way, users will be aware which are in 'beta' stage, and we can keep on
adding new translators (if any) seemlessly to stable codebase and once tested
can move them to proper places.

To use these translators, everyone will have to prefix 'testing/' to existing
type of translator (in volumefile)

Signed-off-by: Anand V. Avati

IO-threads Cleanup: Remove useless data structures.

2009-03-17T11:47:58+00:00

Signed-off-by: Anand V. Avati

IO-threads Cleanup: Clean-up request scheduling and queueing interface.

2009-03-17T11:47:53+00:00

This patch does two things:

1. Cleans up the request scheduling and queueing interface so that all
fops only need to call iot_schedule and not iot_queue and in some
cases iot_schedule.

2. Till now, we've had open and create calls go through the main
glusterfsd thread when sending open and create fops. This patch makes
them also go through the worker threads. But since the open and
creates requests would not be called with a valid inode number in the
loc_t, these requests will get assigned to the worker at index 0.
This will be fixed RSN, when we introduce various techniques of
distributing the inodes(..not requests..) over the worker threads.

Signed-off-by: Anand V. Avati

IO-threads Cleanup: Change workers list to dynamically allocated array

2009-03-17T11:47:49+00:00

Worker threads were represented as a list in iot_conf_t
which made us traverse the list of workers in order to
decide which thread gets the request. Now we represent the
workers as a dynamically allocated array so that we can just index
into the array to schedule the file.

Signed-off-by: Anand V. Avati

IO-threads Cleanup: Change request queue into a struct list_head

2009-03-17T11:46:46+00:00

This patch changes the per-thread request queue from a custom circular
linked list, into the standard list.h list which is easier to
understand and has a cleaner interface.

Signed-off-by: Anand V. Avati

write behind preserves order of fops with respect to writes

2009-03-13T15:06:08+00:00

- the execution order of fops like read, stat, fsync, truncate etc whose results
 are affected by writes, are preserved.

Signed-off-by: Anand V. Avati

fixed deadlock in io-cache

2009-03-06T20:33:22+00:00

ioc_create_cbk was holding inode->lock and calling inode_ctx_put,
which also holds the same lock.

Signed-off-by: Anand V. Avati

code changes in the usage of inode_ctx_get and inode_ctx_put after their implementation is changed to hold inode->lock.

2009-03-04T19:34:34+00:00

Signed-off-by: Anand V. Avati