From 1392da3e237d8ea080573909015916e3544a6d2c Mon Sep 17 00:00:00 2001 From: Xavier Hernandez Date: Thu, 15 May 2014 10:35:14 +0200 Subject: cli/glusterd: Added support for dispersed volumes Two new options have been added to the 'create' command of the cli interface: disperse [] redundancy Both are optional. A dispersed volume is created by specifying, at least, one of them. If 'disperse' is missing or it's present but '' does not, the number of bricks enumerated in the command line is taken as the disperse count. If 'redundancy' is missing, the lowest optimal value is assumed. A configuration is considered optimal (for most workloads) when the disperse count - redundancy count is a power of 2. If the resulting redundancy is 1, the volume is created normally, but if it's greater than 1, a warning is shown to the user and he/she must answer yes/no to continue volume creation. If there isn't any optimal value for the given number of bricks, a warning is also shown and, if the user accepts, a redundancy of 1 is used. If 'redundancy' is specified and the resulting volume is not optimal, another warning is shown to the user. A distributed-disperse volume can be created using a number of bricks multiple of the disperse count. Change-Id: Iab93efbe78e905cdb91f54f3741599f7ea6645e4 BUG: 1118629 Signed-off-by: Xavier Hernandez Reviewed-on: http://review.gluster.org/7782 Tested-by: Gluster Build System Reviewed-by: Jeff Darcy Reviewed-by: Vijay Bellur --- cli/src/cli-rpc-ops.c | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) (limited to 'cli/src/cli-rpc-ops.c') diff --git a/cli/src/cli-rpc-ops.c b/cli/src/cli-rpc-ops.c index c077622c0f1..43db8358bcf 100644 --- a/cli/src/cli-rpc-ops.c +++ b/cli/src/cli-rpc-ops.c @@ -59,9 +59,11 @@ char *cli_vol_type_str[] = {"Distribute", "Stripe", "Replicate", "Striped-Replicate", + "Disperse", "Distributed-Stripe", "Distributed-Replicate", "Distributed-Striped-Replicate", + "Distributed-Disperse", }; char *cli_vol_status_str[] = {"Created", @@ -518,6 +520,8 @@ gf_cli_get_volume_cbk (struct rpc_req *req, struct iovec *iov, int32_t dist_count = 0; int32_t stripe_count = 0; int32_t replica_count = 0; + int32_t disperse_count = 0; + int32_t redundancy_count = 0; int32_t vol_type = 0; int32_t transport = 0; char *volume_id_str = NULL; @@ -671,6 +675,16 @@ xml_output: if (ret) goto out; + snprintf (key, 256, "volume%d.disperse_count", i); + ret = dict_get_int32 (dict, key, &disperse_count); + if (ret) + goto out; + + snprintf (key, 256, "volume%d.redundancy_count", i); + ret = dict_get_int32 (dict, key, &redundancy_count); + if (ret) + goto out; + snprintf (key, 256, "volume%d.transport", i); ret = dict_get_int32 (dict, key, &transport); if (ret) @@ -685,7 +699,7 @@ xml_output: // Distributed (stripe/replicate/stripe-replica) setups if ((type > 0) && ( dist_count < brick_count)) - vol_type = type + 3; + vol_type = type + 4; cli_out ("Volume Name: %s", volname); cli_out ("Type: %s", cli_vol_type_str[vol_type]); @@ -734,6 +748,11 @@ next: brick_count); } else if (type == GF_CLUSTER_TYPE_NONE) { cli_out ("Number of Bricks: %d", brick_count); + } else if (type == GF_CLUSTER_TYPE_DISPERSE) { + cli_out ("Number of Bricks: %d x (%d + %d) = %d", + (brick_count / dist_count), + disperse_count - redundancy_count, + redundancy_count, brick_count); } else { /* For both replicate and stripe, dist_count is good enough */ -- cgit