btrfs physical disk allocation chart color improvements; fixes #3719

src/sys_fs_btrfs.c

@@ -543,7 +543,7 @@ int do_sys_fs_btrfs(int update_every, usec_t dt) {
 
                 snprintf(id, RRD_ID_LENGTH_MAX, "disk_%s", node->id);
                 snprintf(name, RRD_ID_LENGTH_MAX, "disk_%s", node->label);
-                snprintf(title, 200, "BTRFS Disk Allocation for %s", node->label);
+                snprintf(title, 200, "BTRFS Physical Disk Allocation for %s", node->label);
 
                 netdata_fix_chart_id(id);
                 netdata_fix_chart_name(name);
@@ -563,13 +563,13 @@ int do_sys_fs_btrfs(int update_every, usec_t dt) {
                         , RRDSET_TYPE_STACKED
                 );
 
-                node->rd_allocation_disks_unallocated = rrddim_add(node->st_allocation_disks, "unallocated", NULL, 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
-                node->rd_allocation_disks_data_used = rrddim_add(node->st_allocation_disks, "data_used", "data used", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
-                node->rd_allocation_disks_data_free = rrddim_add(node->st_allocation_disks, "data_free", "data free", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
-                node->rd_allocation_disks_metadata_used = rrddim_add(node->st_allocation_disks, "meta_used", "meta used", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+                node->rd_allocation_disks_unallocated   = rrddim_add(node->st_allocation_disks, "unallocated", NULL,      1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+                node->rd_allocation_disks_data_free     = rrddim_add(node->st_allocation_disks, "data_free", "data free", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+                node->rd_allocation_disks_data_used     = rrddim_add(node->st_allocation_disks, "data_used", "data used", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
                 node->rd_allocation_disks_metadata_free = rrddim_add(node->st_allocation_disks, "meta_free", "meta free", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
-                node->rd_allocation_disks_system_used = rrddim_add(node->st_allocation_disks, "sys_used", "sys used", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
-                node->rd_allocation_disks_system_free = rrddim_add(node->st_allocation_disks, "sys_free", "sys free", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+                node->rd_allocation_disks_metadata_used = rrddim_add(node->st_allocation_disks, "meta_used", "meta used", 1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+                node->rd_allocation_disks_system_free   = rrddim_add(node->st_allocation_disks, "sys_free",  "sys free",  1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
+                node->rd_allocation_disks_system_used   = rrddim_add(node->st_allocation_disks, "sys_used",  "sys used",  1, 1024 * 1024, RRD_ALGORITHM_ABSOLUTE);
             }
             else rrdset_next(node->st_allocation_disks);
 

web/dashboard_info.js

@@ -1923,7 +1923,8 @@ netdataDashboard.context = {
     },
 
     'btrfs.disk': {
-        info: 'Physical disk usage of BTRFS. The disk space reported here is the raw physical disk space assigned to the BTRFS volume (i.e. <b>before any RAID levels</b>). BTRFS uses a two-stage allocator, first allocating large regions of disk space for one type of block (data, metadata, or system), and then using a regular block allocator inside those regions. <code>unallocated</code> is the physical disk space that is not allocated yet and is available to become data, metdata or system on demand. When <code>unallocated</code> is zero, all available disk space has been allocated to a specific function. Healthy volumes should ideally have at least five percent of their total space <code>unallocated</code>. You can keep your volume healthy by running the <code>btrfs balance</code> command on it regularly (check <code>man btrfs-balance</code> for more info).  Note that some of the spac elisted as <code>unallocated</code> may not actually be usable if the volume uses devices of different sizes.'
+        info: 'Physical disk usage of BTRFS. The disk space reported here is the raw physical disk space assigned to the BTRFS volume (i.e. <b>before any RAID levels</b>). BTRFS uses a two-stage allocator, first allocating large regions of disk space for one type of block (data, metadata, or system), and then using a regular block allocator inside those regions. <code>unallocated</code> is the physical disk space that is not allocated yet and is available to become data, metdata or system on demand. When <code>unallocated</code> is zero, all available disk space has been allocated to a specific function. Healthy volumes should ideally have at least five percent of their total space <code>unallocated</code>. You can keep your volume healthy by running the <code>btrfs balance</code> command on it regularly (check <code>man btrfs-balance</code> for more info).  Note that some of the spac elisted as <code>unallocated</code> may not actually be usable if the volume uses devices of different sizes.',
+        colors: [ NETDATA.colors[12] ]
     },
 
     'btrfs.data': {

web/index.html

@@ -4406,7 +4406,7 @@
             });
 
             NETDATA.requiredJs.push({
-                url: NETDATA.serverStatic + 'dashboard_info.js?v20180610-1',
+                url: NETDATA.serverStatic + 'dashboard_info.js?v20180611-1',
                 async: false,
                 isAlreadyLoaded: function() { return false; }
             });