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authorPrasad Desala <tdesala@redhat.com>2018-06-25 20:14:01 +0530
committerPrasad Desala <tdesala@redhat.com>2018-06-28 18:10:36 +0530
commitc2ad784884381590545b2afc188c67e60b6bbcfb (patch)
tree33d81f5f3d31a4658422186a2e56dbbc3b7322f8 /glustolibs-gluster/glustolibs/gluster
parentb62c9204e0e290b96bfdb9bdfaf44c63fb8e3ff6 (diff)
Adding dht function is_layout_complete
def is_layout_complete(mnode, volname): """This function reads the subvols in the given volume and checks whether layout is complete or not. Layout starts at zero, ends at 32-bits high, and has no holes or overlaps Args: volname (str): volume name mnode (str): Node on which cmd has to be executed. Returns (bool): True if layout is complete False if layout has any holes or overlaps Example: is_layout_complete("abc.xyz.com", "testvol") """ Change-Id: I46b20bf71c0dd3ac7d2dd393fa209744c4eebb3c Signed-off-by: Prasad Desala <tdesala@redhat.com>
Diffstat (limited to 'glustolibs-gluster/glustolibs/gluster')
-rw-r--r--glustolibs-gluster/glustolibs/gluster/dht_test_utils.py70
1 files changed, 70 insertions, 0 deletions
diff --git a/glustolibs-gluster/glustolibs/gluster/dht_test_utils.py b/glustolibs-gluster/glustolibs/gluster/dht_test_utils.py
index ab16ec5..0ed52c4 100644
--- a/glustolibs-gluster/glustolibs/gluster/dht_test_utils.py
+++ b/glustolibs-gluster/glustolibs/gluster/dht_test_utils.py
@@ -27,6 +27,7 @@ from glustolibs.gluster.layout import Layout
import glustolibs.gluster.constants as k
import glustolibs.gluster.exceptions as gex
from glustolibs.gluster.brickdir import BrickDir
+from glustolibs.gluster.volume_libs import get_subvols
def run_layout_tests(fqpath, layout, test_type):
@@ -310,3 +311,72 @@ class NewHashed(object):
self.newname = newname
self.hashedbrickobject = hashedbrickobject
self.subvol_count = count
+
+
+def is_layout_complete(mnode, volname, dirpath):
+ """This function reads the subvols in the given volume and checks whether
+ layout is complete or not.
+ Layout starts at zero,
+ ends at 32-bits high,
+ and has no holes or overlaps
+
+ Args:
+ volname (str): volume name
+ mnode (str): Node on which cmd has to be executed.
+ dirpath (str): directory path; starting from root of mount point.
+
+ Returns (bool): True if layout is complete
+ False if layout has any holes or overlaps
+
+ Example:
+ is_layout_complete("abc.xyz.com", "testvol", "/")
+ is_layout_complete("abc.xyz.com", "testvol", "/dir1/dir2/dir3")
+ """
+
+ subvols_list = get_subvols(mnode, volname)['volume_subvols']
+ trim_subvols_list = [y for x in subvols_list for y in x]
+
+ # append the dirpath to the elements in the list
+ final_subvols_list = [x + dirpath for x in trim_subvols_list]
+
+ complete_hash_list = []
+ for fqpath in final_subvols_list:
+ hash_list = BrickDir(fqpath).hashrange
+ complete_hash_list.append(hash_list)
+ joined_hashranges = [y for x in complete_hash_list for y in x]
+ g.log.debug("joined range list: %s" % joined_hashranges)
+
+ # remove duplicate hashes
+ collapsed_ranges = list(set(joined_hashranges))
+
+ # sort the range list for good measure
+ collapsed_ranges.sort()
+
+ # first hash in the list is 0?
+ if collapsed_ranges[0] != 0:
+ g.log.error('First hash in range (%d) is not zero' %
+ collapsed_ranges[0])
+ return False
+
+ # last hash in the list is 32-bits high?
+ if collapsed_ranges[-1] != int(0xffffffff):
+ g.log.error('Last hash in ranges (%s) is not 0xffffffff' %
+ hex(collapsed_ranges[-1]))
+ return False
+
+ # remove the first and last hashes
+ clipped_ranges = collapsed_ranges[1:-1]
+ g.log.debug('clipped: %s' % clipped_ranges)
+
+ # walk through the list in pairs and look for diff == 1
+ iter_ranges = iter(clipped_ranges)
+ for first in iter_ranges:
+ second = next(iter_ranges)
+ hash_difference = second - first
+ g.log.debug('%d - %d = %d' % (second, first, hash_difference))
+ if hash_difference > 1:
+ g.log.error("Layout has holes")
+
+ return False
+ elif hash_difference < 1:
+ g.log.error("Layout has overlaps")