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Add support for configurable OSD DB ratios

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The default of 0.05 (5%) is likely ideal in the initial implementation,
but allow this to be set explicitly for maximum flexibility in
space-constrained or performance-critical use-cases.
This commit is contained in:
Joshua Boniface
2021-09-23 23:31:58 -04:00
parent d0f3e9e285
commit 65df807b09
7 changed files with 40 additions and 17 deletions
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4
daemon-common/ceph.py
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@ -236,7 +236,7 @@ def add_osd_db_vg(zkhandler, node, device):
# OSD addition and removal uses the /cmd/ceph pipe
# These actions must occur on the specific node they reference
def add_osd(zkhandler, node, device, weight, ext_db_flag=False):
def add_osd(zkhandler, node, device, weight, ext_db_flag=False, ext_db_ratio=0.05):
# Verify the target node exists
if not common.verifyNode(zkhandler, node):
return False, 'ERROR: No node named "{}" is present in the cluster.'.format(node)
@ -247,7 +247,7 @@ def add_osd(zkhandler, node, device, weight, ext_db_flag=False):
return False, 'ERROR: Block device "{}" on node "{}" is used by OSD "{}"'.format(device, node, block_osd)
# Tell the cluster to create a new OSD for the host
add_osd_string = 'osd_add {},{},{},{}'.format(node, device, weight, ext_db_flag)
add_osd_string = 'osd_add {},{},{},{},{}'.format(node, device, weight, ext_db_flag, ext_db_ratio)
zkhandler.write([
('base.cmd.ceph', add_osd_string)
])