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* cluster/afr: Allocate diff algorithm loop_state structures only once.Vikas Gorur2009-12-281-44/+158
| | | | | | | | | | | | Instead of CALLOC'ing a loop_state structure at the beginning of every loop, keep a table of allocated structures and reuse them. Signed-off-by: Vikas Gorur <vikas@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 320 (Improve self-heal performance) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=320
* cluster/afr: Report number of blocks healed during diff self-heal.Vikas Gorur2009-12-281-1/+15
| | | | | | | | Signed-off-by: Vikas Gorur <vikas@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 320 (Improve self-heal performance) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=320
* afr: fix logic to break out of diff/checksum loopAnand Avati2009-11-281-9/+5
| | | | | | | | | | | | When checksum fop returns error, mark for terminating the loop at the end of the iteration (when all checksum calls of that iteration return) and not immediately Signed-off-by: Anand V. Avati <avati@blackhole.gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 320 (Improve self-heal performance) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=320
* cluster/afr: Fix self-heal loop driver termination logic.Vikas Gorur2009-11-131-7/+19
| | | | | | | | Signed-off-by: Vikas Gorur <vikas@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 320 (Improve self-heal performance) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=320
* cluster/afr: Bail out of the self-heal driver loops as soon as possibleVikas Gorur2009-11-031-4/+4
| | | | | | | | | | | | Don't wait for the next recursive call to sh_{full,diff}_loop_driver to decide that we've reached the end of file, as the frame could have been destroyed by that time (if subvolumes are posix). Signed-off-by: Vikas Gorur <vikas@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 320 (Improve self-heal performance) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=320
* cluster/afr: Pipeline the "diff" data self-heal read-write loop.Vikas Gorur2009-10-231-109/+263
| | | | | | | | | | Start upto "data-self-heal-window-size" instances of the read-write loop of the "diff" data self-heal algorithm simultaneously. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 320 (Improve self-heal performance) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=320
* cluster/afr: Pipeline the "full" data self-heal read-write loop.Vikas Gorur2009-10-231-53/+214
| | | | | | | | | | | | | Start upto "data-self-heal-window-size" instances of the read-write loop of the "full" data self-heal algorithm simultaneously. Add a new option "data-self-heal-window-size" with range [1-1024], and a default value of 16. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 320 (Improve self-heal performance) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=320
* Changed occurrences of Z Research to Gluster.Vijay Bellur2009-10-071-1/+1
| | | | Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
* Global: NFS-friendly prototype changesShehjar Tikoo2009-10-011-2/+4
| | | | | | | Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 145 (NFSv3 related additions to 2.1 task list) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=145
* cluster/afr: Fix memory leak in "diff" self-heal algorithm.Vikas Gorur2009-09-241-0/+30
| | | | | | | | | FREE sh->private after diff self-heal is done. Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 281 (memory leak in "diff" self heal algorithm) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=281
* cluster/afr: Add new option "data-self-heal-algorithm"Vikas Gorur2009-09-221-0/+1
| | | | | | | | | | option: data-self-heal-algorithm type: string default: "full" This option allows the user to specify the algorithm to be used for data self-heal. Currently supported values are "full" and "diff". Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
* cluster/afr: Add the "diff" self-heal algorithm.Vikas Gorur2009-09-221-0/+352
| | | | | | | | | | | The "diff" self-heal algorithm works as follows: For each block: Compute MD5 checksum on source and all sinks If checksum on a sink differs from source: Read block from source and write to sinks Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
* cluster/afr: Make the self-heal algorithm pluggable.Vikas Gorur2009-09-221-0/+233
Abstract the read/write loop part of data self-heal. This patch has support for the "full" (i.e., read and write entire file) algorithm. Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
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