diff options
| author | Xavier Hernandez <xhernandez@datalab.es> | 2014-11-25 09:54:29 +0100 |
|---|---|---|
| committer | Vijay Bellur <vbellur@redhat.com> | 2014-12-04 11:35:19 -0800 |
| commit | ca2a3949715fb25862d1e34f9e65283287faa842 (patch) | |
| tree | 9e54be49bc0c6a363aaf475b3b14b34966407715 /xlators/cluster/ec | |
| parent | bc91dd4de39ffd481a52b837f322f6782c14e9f1 (diff) | |
ec: Fix incorrect value of EC_MAX_NODES
EC_MAX_NODES was incorrectly calculated. Now the value if computed
as the minimum between the theoretical maximum and the limit imposed
by the Galois Field.
Change-Id: I75a8345147f344f051923d66be2c10d405370c7b
BUG: 1167419
Signed-off-by: Xavier Hernandez <xhernandez@datalab.es>
Reviewed-on: http://review.gluster.org/9193
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Dan Lambright <dlambrig@redhat.com>
Diffstat (limited to 'xlators/cluster/ec')
| -rw-r--r-- | xlators/cluster/ec/src/ec-method.h | 3 | ||||
| -rw-r--r-- | xlators/cluster/ec/src/ec.c | 2 |
2 files changed, 4 insertions, 1 deletions
diff --git a/xlators/cluster/ec/src/ec-method.h b/xlators/cluster/ec/src/ec-method.h index 085de8f4b17..29b46e10443 100644 --- a/xlators/cluster/ec/src/ec-method.h +++ b/xlators/cluster/ec/src/ec-method.h @@ -13,7 +13,10 @@ #include "ec-gf.h" +/* Determines the maximum size of the matrix used to encode/decode data */ #define EC_METHOD_MAX_FRAGMENTS 16 +/* Determines the maximum number of usable elements in the Galois Field */ +#define EC_METHOD_MAX_NODES (EC_GF_SIZE - 1) #define EC_METHOD_WORD_SIZE 64 diff --git a/xlators/cluster/ec/src/ec.c b/xlators/cluster/ec/src/ec.c index c702ce3f0fd..c6d3b9fe718 100644 --- a/xlators/cluster/ec/src/ec.c +++ b/xlators/cluster/ec/src/ec.c @@ -23,7 +23,7 @@ * using the rule that redundancy cannot be equal or greater than the number * of fragments. */ -#define EC_MAX_NODES (EC_MAX_FRAGMENTS + ((EC_MAX_FRAGMENTS - 1) / 2)) +#define EC_MAX_NODES min(EC_MAX_FRAGMENTS * 2 - 1, EC_METHOD_MAX_NODES) int32_t ec_parse_options(xlator_t * this) { |