system-info: added info about temporary storage.

- temporary storage is used by Mercurial and other parts of the system.
knowing it's limitations is important to know.

rhodecode/api/tests/test_get_server_info.py

@@ -46,6 +46,7 b' class TestGetServerInfo(object):'
         expected['load'] = resp['result']['load']
         expected['cpu'] = resp['result']['cpu']
         expected['storage'] = resp['result']['storage']
+        expected['storage_temp'] = resp['result']['storage_temp']
         expected['storage_inodes'] = resp['result']['storage_inodes']
         expected['server'] = resp['result']['server']
 
@@ -61,6 +62,7 b' class TestGetServerInfo(object):'
         expected['load'] = resp['result']['load']
         expected['cpu'] = resp['result']['cpu']
         expected['storage'] = resp['result']['storage']
+        expected['storage_temp'] = resp['result']['storage_temp']
         expected['storage_inodes'] = resp['result']['storage_inodes']
         expected['server'] = resp['result']['server']
 

rhodecode/controllers/admin/settings.py

@@ -613,6 +613,9 b' class SettingsController(BaseController)'
             (_('Archive cache storage location'), val('storage_archive')['path'], state('storage_archive')),
             (_('Archive cache info'), val('storage_archive')['text'], state('storage_archive')),
 
+            (_('Temp storage location'), val('storage_temp')['path'], state('storage_temp')),
+            (_('Temp storage info'), val('storage_temp')['text'], state('storage_temp')),
+
             (_('Search info'), val('search')['text'], state('search')),
             (_('Search location'), val('search')['location'], state('search')),
             ('', '', ''),  # spacer

rhodecode/lib/system_info.py

@@ -367,6 +367,34 b' def storage_gist():'
     return SysInfoRes(value=value, state=state, human_value=human_value)
 
 
+def storage_temp():
+    import tempfile
+    from rhodecode.lib.helpers import format_byte_size_binary
+
+    path = tempfile.gettempdir()
+    value = dict(percent=0, used=0, total=0, items=0, path=path, text='')
+    state = STATE_OK_DEFAULT
+
+    if not psutil:
+        return SysInfoRes(value=value, state=state)
+
+    try:
+        value.update(dict(psutil.disk_usage(path)._asdict()))
+    except Exception as e:
+        log.exception('Failed to fetch temp dir info')
+        state = {'message': str(e), 'type': STATE_ERR}
+
+    human_value = value.copy()
+    human_value['used'] = format_byte_size_binary(value['used'])
+    human_value['total'] = format_byte_size_binary(value['total'])
+    human_value['text'] = "{}/{}, {}% used".format(
+        format_byte_size_binary(value['used']),
+        format_byte_size_binary(value['total']),
+        value['percent'])
+
+    return SysInfoRes(value=value, state=state, human_value=human_value)
+
+
 def search_info():
     import rhodecode
     from rhodecode.lib.index import searcher_from_config
@@ -595,6 +623,7 b' def get_system_info(environ):'
         'storage_inodes': SysInfo(storage_inodes)(),
         'storage_archive': SysInfo(storage_archives)(),
         'storage_gist': SysInfo(storage_gist)(),
+        'storage_temp': SysInfo(storage_temp)(),
 
         'search': SysInfo(search_info)(),