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-rwxr-xr-xextras/glusterfs-georep-upgrade.py77
1 files changed, 77 insertions, 0 deletions
diff --git a/extras/glusterfs-georep-upgrade.py b/extras/glusterfs-georep-upgrade.py
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+++ b/extras/glusterfs-georep-upgrade.py
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+#!/usr/bin/python3
+"""
+
+Copyright (c) 2020 Red Hat, Inc. <http://www.redhat.com>
+This file is part of GlusterFS.
+
+This file is licensed to you under your choice of the GNU Lesser
+General Public License, version 3 or any later version (LGPLv3 or
+later), or the GNU General Public License, version 2 (GPLv2), in all
+cases as published by the Free Software Foundation.
+
+"""
+
+import argparse
+import errno
+import os, sys
+import shutil
+from datetime import datetime
+
+def find_htime_path(brick_path):
+ dirs = []
+ htime_dir = os.path.join(brick_path, '.glusterfs/changelogs/htime')
+ for file in os.listdir(htime_dir):
+ if os.path.isfile(os.path.join(htime_dir,file)) and file.startswith("HTIME"):
+ dirs.append(os.path.join(htime_dir, file))
+ else:
+ raise FileNotFoundError("%s unavailable" % (os.path.join(htime_dir, file)))
+ return dirs
+
+def modify_htime_file(brick_path):
+ htime_file_path_list = find_htime_path(brick_path)
+
+ for htime_file_path in htime_file_path_list:
+ changelog_path = os.path.join(brick_path, '.glusterfs/changelogs')
+ temp_htime_path = os.path.join(changelog_path, 'htime/temp_htime_file')
+ with open(htime_file_path, 'r') as htime_file, open(temp_htime_path, 'w') as temp_htime_file:
+ #extract epoch times from htime file
+ paths = htime_file.read().split("\x00")
+
+ for pth in paths:
+ epoch_no = pth.split(".")[-1]
+ changelog = os.path.basename(pth)
+ #convert epoch time to year, month and day
+ if epoch_no != '':
+ date=(datetime.fromtimestamp(float(int(epoch_no))).strftime("%Y/%m/%d"))
+ #update paths in temp htime file
+ temp_htime_file.write("%s/%s/%s\x00" % (changelog_path, date, changelog))
+ #create directory in the format year/month/days
+ path = os.path.join(changelog_path, date)
+
+ if changelog.startswith("CHANGELOG."):
+ try:
+ os.makedirs(path, mode = 0o600);
+ except OSError as exc:
+ if exc.errno == errno.EEXIST:
+ pass
+ else:
+ raise
+
+ #copy existing changelogs to new directory structure, delete old changelog files
+ shutil.copyfile(pth, os.path.join(path, changelog))
+ os.remove(pth)
+
+ #rename temp_htime_file with htime file
+ os.rename(htime_file_path, os.path.join('%s.bak'%htime_file_path))
+ os.rename(temp_htime_path, htime_file_path)
+
+if __name__ == "__main__":
+ parser = argparse.ArgumentParser()
+ parser.add_argument('brick_path', help="This upgrade script, which is to be run on\
+ server side, takes brick path as the argument, \
+ updates paths inside htime file and alters the directory structure \
+ above the changelog files inorder to support new optimised format \
+ of the directory structure as per \
+ https://review.gluster.org/#/c/glusterfs/+/23733/")
+ args = parser.parse_args()
+ modify_htime_file(args.brick_path)