openstack/kolla
Code Issues Proposed changes

Use immutable journal path rather than device name

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Device name is mutable when removed or added disks. Use uuid path or
lable is more robust.

Change-Id: I95cae6a9bf185d6f81126c42ac72d51b5ed659c2
Closes-Bug: #1710058
This commit is contained in:
Jeffrey Zhang 2017-08-11 12:13:38 +08:00
parent f1842f4fd9
commit 2b01b05444
1 changed files with 21 additions and 1 deletions
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22
docker/kolla-toolbox/find_disks.py
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@ -80,6 +80,15 @@ import re
import subprocess # nosec
PREFERRED_DEVICE_LINK_ORDER = [
'/dev/disk/by-uuid',
'/dev/disk/by-partuuid',
'/dev/disk/by-parttypeuuid',
'/dev/disk/by-label',
'/dev/disk/by-partlabel'
]
def get_id_part_entry_name(dev, use_udev):
if use_udev:
dev_name = dev.get('ID_PART_ENTRY_NAME', '')
@ -133,6 +142,14 @@ def find_disk(ct, name, match_mode, use_udev):
yield dev
def get_device_link(dev):
for preferred_link in PREFERRED_DEVICE_LINK_ORDER:
for link in dev.device_links:
if link.startswith(preferred_link):
return link
return dev.device_node
def extract_disk_info(ct, dev, name, use_udev):
if not dev:
return
@ -146,6 +163,9 @@ def extract_disk_info(ct, dev, name, use_udev):
re.sub(r'.*[^\d]', '', dev.device_node)
if is_dev_matched_by_name(dev, name, 'strict', use_udev):
kwargs['external_journal'] = False
# NOTE(jeffrey4l): this is only used for bootstrap osd stage and
# there is no journal partion at all. So it is OK to use
# device_node directly.
kwargs['journal'] = dev.device_node[:-1] + '2'
kwargs['journal_device'] = kwargs['device']
kwargs['journal_num'] = 2
@ -153,7 +173,7 @@ def extract_disk_info(ct, dev, name, use_udev):
kwargs['external_journal'] = True
journal_name = get_id_part_entry_name(dev, use_udev) + '_J'
for journal in find_disk(ct, journal_name, 'strict', use_udev):
kwargs['journal'] = journal.device_node
kwargs['journal'] = get_device_link(journal)
kwargs['journal_device'] = \
journal.find_parent('block').device_node
kwargs['journal_num'] = \