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| Dir : //proc/self/root/opt/saltstack/salt/lib/python3.10/site-packages/salt/modules/drbd.py |
"""
DRBD administration module
"""
import logging
log = logging.getLogger(__name__)
def _analyse_overview_field(content):
"""
Split the field in drbd-overview
"""
if "(" in content:
# Output like "Connected(2*)" or "UpToDate(2*)"
return content.split("(")[0], content.split("(")[0]
elif "/" in content:
# Output like "Primar/Second" or "UpToDa/UpToDa"
return content.split("/")[0], content.split("/")[1]
return content, ""
def _count_spaces_startswith(line):
"""
Count the number of spaces before the first character
"""
if line.split("#")[0].strip() == "":
return None
spaces = 0
for i in line:
if i.isspace():
spaces += 1
else:
return spaces
def _analyse_status_type(line):
"""
Figure out the sections in drbdadm status
"""
spaces = _count_spaces_startswith(line)
if spaces is None:
return ""
switch = {
0: "RESOURCE",
2: {" disk:": "LOCALDISK", " role:": "PEERNODE", " connection:": "PEERNODE"},
4: {" peer-disk:": "PEERDISK"},
}
ret = switch.get(spaces, "UNKNOWN")
if isinstance(ret, str):
return ret
for x in ret:
if x in line:
return ret[x]
return "UNKNOWN"
def _add_res(line):
"""
Analyse the line of local resource of ``drbdadm status``
"""
global resource
fields = line.strip().split()
if resource:
ret.append(resource)
resource = {}
resource["resource name"] = fields[0]
resource["local role"] = fields[1].split(":")[1]
resource["local volumes"] = []
resource["peer nodes"] = []
def _add_volume(line):
"""
Analyse the line of volumes of ``drbdadm status``
"""
section = _analyse_status_type(line)
fields = line.strip().split()
volume = {}
for field in fields:
volume[field.split(":")[0]] = field.split(":")[1]
if section == "LOCALDISK":
resource["local volumes"].append(volume)
else:
# 'PEERDISK'
lastpnodevolumes.append(volume)
def _add_peernode(line):
"""
Analyse the line of peer nodes of ``drbdadm status``
"""
global lastpnodevolumes
fields = line.strip().split()
peernode = {}
peernode["peernode name"] = fields[0]
# Could be role or connection:
peernode[fields[1].split(":")[0]] = fields[1].split(":")[1]
peernode["peer volumes"] = []
resource["peer nodes"].append(peernode)
lastpnodevolumes = peernode["peer volumes"]
def _empty(dummy):
"""
Action of empty line of ``drbdadm status``
"""
def _unknown_parser(line):
"""
Action of unsupported line of ``drbdadm status``
"""
global ret
ret = {"Unknown parser": line}
def _line_parser(line):
"""
Call action for different lines
"""
section = _analyse_status_type(line)
fields = line.strip().split()
switch = {
"": _empty,
"RESOURCE": _add_res,
"PEERNODE": _add_peernode,
"LOCALDISK": _add_volume,
"PEERDISK": _add_volume,
}
func = switch.get(section, _unknown_parser)
func(line)
def overview():
"""
Show status of the DRBD devices, support two nodes only.
drbd-overview is removed since drbd-utils-9.6.0,
use status instead.
CLI Example:
.. code-block:: bash
salt '*' drbd.overview
"""
cmd = "drbd-overview"
for line in __salt__["cmd.run"](cmd).splitlines():
ret = {}
fields = line.strip().split()
minnum = fields[0].split(":")[0]
device = fields[0].split(":")[1]
connstate, _ = _analyse_overview_field(fields[1])
localrole, partnerrole = _analyse_overview_field(fields[2])
localdiskstate, partnerdiskstate = _analyse_overview_field(fields[3])
if localdiskstate.startswith("UpTo"):
if partnerdiskstate.startswith("UpTo"):
if len(fields) >= 5:
mountpoint = fields[4]
fs_mounted = fields[5]
totalsize = fields[6]
usedsize = fields[7]
remainsize = fields[8]
perc = fields[9]
ret = {
"minor number": minnum,
"device": device,
"connection state": connstate,
"local role": localrole,
"partner role": partnerrole,
"local disk state": localdiskstate,
"partner disk state": partnerdiskstate,
"mountpoint": mountpoint,
"fs": fs_mounted,
"total size": totalsize,
"used": usedsize,
"remains": remainsize,
"percent": perc,
}
else:
ret = {
"minor number": minnum,
"device": device,
"connection state": connstate,
"local role": localrole,
"partner role": partnerrole,
"local disk state": localdiskstate,
"partner disk state": partnerdiskstate,
}
else:
syncbar = fields[4]
synced = fields[6]
syncedbytes = fields[7]
sync = synced + syncedbytes
ret = {
"minor number": minnum,
"device": device,
"connection state": connstate,
"local role": localrole,
"partner role": partnerrole,
"local disk state": localdiskstate,
"partner disk state": partnerdiskstate,
"synchronisation: ": syncbar,
"synched": sync,
}
return ret
# Global para for func status
ret = []
resource = {}
lastpnodevolumes = None
def status(name="all"):
"""
Using drbdadm to show status of the DRBD devices,
available in the latest drbd9.
Support multiple nodes, multiple volumes.
:type name: str
:param name:
Resource name.
:return: drbd status of resource.
:rtype: list(dict(res))
CLI Example:
.. code-block:: bash
salt '*' drbd.status
salt '*' drbd.status name=<resource name>
"""
# Initialize for multiple times test cases
global ret
global resource
ret = []
resource = {}
cmd = ["drbdadm", "status"]
cmd.append(name)
# One possible output: (number of resource/node/vol are flexible)
# resource role:Secondary
# volume:0 disk:Inconsistent
# volume:1 disk:Inconsistent
# drbd-node1 role:Primary
# volume:0 replication:SyncTarget peer-disk:UpToDate done:10.17
# volume:1 replication:SyncTarget peer-disk:UpToDate done:74.08
# drbd-node2 role:Secondary
# volume:0 peer-disk:Inconsistent resync-suspended:peer
# volume:1 peer-disk:Inconsistent resync-suspended:peer
for line in __salt__["cmd.run"](cmd).splitlines():
_line_parser(line)
if resource:
ret.append(resource)
return ret