glusterfs.git/tests/bitrot, branch v3.7.0beta2

features/bit-rot-stub: versioning of objects in write/truncate fop instead of open

2015-05-10T15:14:33+00:00

* This patch brings in the changes where object versioning is done in write and
  truncate fops instead of tracking them in open and create fops. This model
  works for both regular and anonymous fds. It also removes the race associated
  with open calls, create and lookups.

  This patch follows the below method for object versioning and notifications:

  Before sending writev on the fd, increase the ongoing
  version first. This makes anonymous fd write similar to the regular
  fd write by having the ongoing version increased before doing the
  write.

  Do following steps to do versioning:
  1) For anonymous fds set the fd context (so that release is invoked) and add
     the fd context to the list maintained in the inode context.
     For regular fds the above think would have been done in open itself.
  2) Increase the on-disk ongoing version
  3) Increase the in memory ongoing version and mark inode as non-dirty
  3) Once versioning is successfully done send write operation. If
     versioning fails, then fail the write fop.
  5) In writev_cbk mark inode as modified.

> Change-Id: I7104391bbe076d8fc49b68745d2ec29a6e92476c
> BUG: 1207979
> Signed-off-by: Raghavendra Bhat 
> Reviewed-on: http://review.gluster.org/10233
> Tested-by: Gluster Build System 
> Reviewed-by: Vijay Bellur 

Change-Id: I4bb86989b5fab02b9ed2950798b1a80e566f1024
BUG: 1220041
Signed-off-by: Raghavendra Bhat 
Reviewed-on: http://review.gluster.org/10722
Reviewed-by: Gaurav Kumar Garg 
Tested-by: NetBSD Build System
Tested-by: Gluster Build System

features/bitrot: Follow xattr naming conventions

2015-05-10T12:28:43+00:00

Instead of "trusted.glusterfs.bit-rot.*" use "trusted.bit-rot.*"

NOTE:
With this patch, data on existing volumes would be resigned
(which should be OK as of now since we do not expect many
users as of now :-))

> Change-Id: I926c7bca266a9c8f2cb35d57c4d0359aa5cecfa0
> BUG: 1170075
> Signed-off-by: Venky Shankar 
> Reviewed-on: http://review.gluster.org/10181
> Tested-by: NetBSD Build System
> Tested-by: Gluster Build System 
> Reviewed-by: Vijay Bellur 

Change-Id: I3c18d7dc2db4beaca6e8d8d231b4171a7b18795f
Signed-off-by: Venky Shankar 
BUG: 1220041
Reviewed-on: http://review.gluster.org/10718
Tested-by: Gluster Build System 
Reviewed-by: Gaurav Kumar Garg

tests/bitrot-stub: Object versioning test(s)

2015-04-08T06:47:51+00:00

This patch introduces basic object versioning test(s) which
is required for bitrot detection to work correctly. Basic
test(s) such as opening a file in read-only mode, single
open, multiple open()s are covered on FUSE mount _only_ as
stub does not support anonymous fds yet. For this reason,
the test case disables open-behind.

Actual verification is implemented as a C source which
makes use of the same on-disk data structures as used by
the stub code. The data structures are moved to separate
header file which is included by the test script. Such
modularization helps in future enhancements to keep the
version "data type" opaque and provide handful of APIs
version checking (equal/greater/etc..).

[
  This is just a start and should grow over time as stub
  is enhanced and codebase matures.
]

Change-Id: Ibee20e65a15b56bbdd59fd2703f9305b115aec7a
BUG: 1201724
Signed-off-by: Venky Shankar 
Reviewed-on: http://review.gluster.org/10140
Reviewed-by: Raghavendra Bhat 
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur