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Add device class tiers to Ceph pools

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Allows specifying a particular device class ("tier") for a given pool,
for instance SSD-only or NVMe-only. This is implemented with Crush
rules on the Ceph side, and via an additional new key in the pool
Zookeeper schema which is defaulted to "default".
This commit is contained in:
Joshua Boniface
2021-12-28 20:39:50 -05:00
parent c3d255be65
commit 02138974fa
8 changed files with 139 additions and 47 deletions
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21
client-cli/pvc/pvc.py
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@ -3507,6 +3507,17 @@ def ceph_pool():
@click.command(name="add", short_help="Add new RBD pool.")
@click.argument("name")
@click.argument("pgs")
@click.option(
"-t",
"--tier",
"tier",
default="default",
show_default=True,
type=click.Choice(["default", "hdd", "ssd", "nvme"]),
help="""
The device tier to limit the pool to. Default is all OSD tiers, and specific tiers can be specified instead. At least one full set of OSDs for a given tier must be present for the tier to be specified, or the pool creation will fail.
""",
)
@click.option(
"--replcfg",
"replcfg",
@ -3514,20 +3525,16 @@ def ceph_pool():
show_default=True,
required=False,
help="""
The replication configuration, specifying both a "copies" and "mincopies" value, separated by a
comma, e.g. "copies=3,mincopies=2". The "copies" value specifies the total number of replicas
and should not exceed the total number of nodes; the "mincopies" value specifies the minimum
number of available copies to allow writes. For additional details please see the Cluster
Architecture documentation.
The replication configuration, specifying both a "copies" and "mincopies" value, separated by a comma, e.g. "copies=3,mincopies=2". The "copies" value specifies the total number of replicas and should not exceed the total number of nodes; the "mincopies" value specifies the minimum number of available copies to allow writes. For additional details please see the Cluster Architecture documentation.
""",
)
@cluster_req
def ceph_pool_add(name, pgs, replcfg):
def ceph_pool_add(name, pgs, tier, replcfg):
"""
Add a new Ceph RBD pool with name NAME and PGS placement groups.
"""
retcode, retmsg = pvc_ceph.ceph_pool_add(config, name, pgs, replcfg)
retcode, retmsg = pvc_ceph.ceph_pool_add(config, name, pgs, replcfg, tier)
cleanup(retcode, retmsg)