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* ec: Change licenseXavier Hernandez2014-12-121-16/+6
| | | | | | | | | | | | | This is a backport of http://review.gluster.org/9201/ Change-Id: Iae90ade2421898417b53dec0417a610cf306c44b BUG: 1170515 Signed-off-by: Xavier Hernandez <xhernandez@datalab.es> Reviewed-on: http://review.gluster.org/9233 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com> Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com> Tested-by: Raghavendra Bhat <raghavendra@redhat.com>
* ec: Removed SSE2 dependencyXavier Hernandez2014-09-121-35/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements the Galois Field multiplications using pure C code without any assembler support. This makes the ec xlator portable to other architectures. In the future it will be possible to use an optimized implementation of the multiplications using architecture dependent facilities (it will be automatically detected and configured). To allow bricks with different machine word sizes to be able to work seamlessly in the same volume, the minimum fragment length to be stored in any brick has been fixed to 512 bytes. Otherwise, different implementations will corrupt the data (SSE2 used 128 bytes, while new implementation would have used 64). This patch also removes the '-msse2' option added on patch http://review.gluster.org/8396/ This is a backport of http://review.gluster.org/8413/ Change-Id: Iaf6e4ef3dcfda6c68f48f16ca46fc4fb61a215f4 BUG: 1140845 Signed-off-by: Xavier Hernandez <xhernandez@datalab.es> Reviewed-on: http://review.gluster.org/8701 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* ec: Fixed coverity scan issuesXavier Hernandez2014-08-031-8/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | CID list: 1226163 Logically dead code 1226166 Missing break in switch 1226167 Missing break in switch 1226168 Missing break in switch 1226169 Missing break in switch 1226170 Missing break in switch 1226171 Missing break in switch 1226172 Missing break in switch 1226173 Missing break in switch 1226174 Missing break in switch 1226175 Missing break in switch 1226176 Missing break in switch 1226177 Missing break in switch 1226178 Data race condition 1226179 Data race condition 1226180 Data race condition 1226181 Thread deadlock 1226182 Uninitialized pointer read 1226183 Uninitialized pointer read 1226184 Read from pointer after free Change-Id: I4d33aa42289371927175c43bb29e018df64fb943 BUG: 1122834 Signed-off-by: Xavier Hernandez <xhernandez@datalab.es> Reviewed-on: http://review.gluster.org/8372 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cluster/ec: Added erasure code translatorXavier Hernandez2014-07-111-0/+182
Change-Id: I293917501d5c2ca4cdc6303df30cf0b568cea361 BUG: 1118629 Signed-off-by: Xavier Hernandez <xhernandez@datalab.es> Reviewed-on: http://review.gluster.org/7749 Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>