diff options
Diffstat (limited to 'tools/rpcctl')
| -rw-r--r-- | tools/rpcctl/Makefile.am | 13 | ||||
| -rw-r--r-- | tools/rpcctl/Makefile.in | 621 | ||||
| -rw-r--r-- | tools/rpcctl/rpcctl.man | 67 | ||||
| -rwxr-xr-x | tools/rpcctl/rpcctl.py | 262 |
4 files changed, 963 insertions, 0 deletions
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+uninstall-am: uninstall-man + +uninstall-man: uninstall-man8 + +.MAKE: install-am install-data-am install-strip + +.PHONY: all all-am all-local check check-am clean clean-generic \ + clean-libtool cscopelist-am ctags-am distclean \ + distclean-generic distclean-libtool distdir dvi dvi-am html \ + html-am info info-am install install-am install-data \ + install-data-am install-data-hook install-dvi install-dvi-am \ + install-exec install-exec-am install-html install-html-am \ + install-info install-info-am install-man install-man8 \ + install-pdf install-pdf-am install-ps install-ps-am \ + install-strip installcheck installcheck-am installdirs \ + maintainer-clean maintainer-clean-generic mostlyclean \ + mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \ + tags-am uninstall uninstall-am uninstall-man uninstall-man8 + +.PRECIOUS: Makefile + + +all-local: $(PYTHON_FILES) + +install-data-hook: + $(INSTALL) -m 755 rpcctl.py $(DESTDIR)$(sbindir)/rpcctl + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/tools/rpcctl/rpcctl.man b/tools/rpcctl/rpcctl.man new file mode 100644 index 0000000..b87ba0d --- /dev/null +++ b/tools/rpcctl/rpcctl.man @@ -0,0 +1,67 @@ +.\" +.\" rpcctl(8) +.\" +.TH rpcctl 8 "15 Feb 2022" +.SH NAME +rpcctl \- Displays SunRPC connection information +.SH SYNOPSIS +.nf +.BR rpcctl " [ \fB\-h \fR| \fB\-\-help \fR] { \fBclient \fR| \fBswitch \fR| \fBxprt \fR}" +.P +.BR "rpcctl client" " \fR[ \fB\-h \fR| \fB\-\-help \fR] { \fBshow \fR}" +.BR "rpcctl client show " "\fR[ \fB\-h \f| \fB\-\-help \fR] [ \fIXPRT \fR]" +.P +.BR "rpcctl switch" " \fR[ \fB\-h \fR| \fB\-\-help \fR] { \fBset \fR| \fBshow \fR}" +.BR "rpcctl switch set" " \fR[ \fB\-h \fR| \fB\-\-help \fR] \fISWITCH \fBdstaddr \fINEWADDR" +.BR "rpcctl switch show" " \fR[ \fB\-h \fR| \fB\-\-help \fR] [ \fISWITCH \fR]" +.P +.BR "rpcctl xprt" " \fR[ \fB\-h \fR| \fB\-\-help \fR] { \fBremove \fR| \fBset \fR| \fBshow \fR}" +.BR "rpcctl xprt remove" " \fR[ \fB\-h \fR| \fB\-\-help \fR] \fIXPRT" +.BR "rpcctl xprt set" " \fR[ \fB\-h \fR| \fB\-\-help \fR] \fIXPRT \fR{ \fBdstaddr \fINEWADDR \fR| \fBoffline \fR| \fBonline \fR}" +.BR "rpcctl xprt show" " \fR[ \fB\-h \fR| \fB\-\-help \fR] [ \fIXPRT \fR]" +.fi +.SH DESCRIPTION +.RB "The " rpcctl " command displays information collected in the SunRPC sysfs files about the system's SunRPC objects. +.P +.SS rpcctl client \fR- \fBCommands operating on RPC clients +.IP "\fBshow \fR[ \fICLIENT \fR] \fB(default)" +Show detailed information about the RPC clients on this system. +If \fICLIENT \fRwas provided, then only show information about a single RPC client. +.P +.SS rpcctl switch \fR- \fBCommands operating on groups of transports +.IP "\fBset \fISWITCH \fBdstaddr \fINEWADDR" +Change the destination address of all transports in the \fISWITCH \fRto \fINEWADDR\fR. +\fINEWADDR \fRcan be an IP address, DNS name, or anything else resolvable by \fBgethostbyname\fR(3). +.IP "\fBshow \fR[ \fISWITCH \fR] \fB(default)" +Show detailed information about groups of transports on this system. +If \fISWITCH \fRwas provided, then only show information about a single transport group. +.P +.SS rpcctl xprt \fR- \fBCommands operating on individual transports +.IP "\fBremove \fIXPRT" +Removes the specified \fIXPRT \fRfrom the system. +Note that "main" transports cannot be removed. +.P +.IP "\fBset \fIXPRT \fBdstaddr \fINEWADDR" +Change the destination address of the specified \fIXPRT \fR to \fINEWADDR\fR. +\fINEWADDR \fRcan be an IP address, DNS name, or anything else resolvable by \fBgethostbyname\fR(3). +.P +.IP "\fBset \fIXPRT \fBoffline" +Sets the specified \fIXPRT\fR's state to offline. +.P +.IP "\fBset \fIXPRT \fBonline" +Sets the specified \fIXPRT\fR's state to online. +.IP "\fBshow \fR[ \fIXPRT \fR] \fB(default)" +Show detailed information about this system's transports. +If \fIXPRT \fRwas provided, then only show information about a single transport. +.SH EXAMPLES +.IP "\fBrpcctl switch show switch-2" +Show details about the RPC switch named "switch-2". +.IP "\fBrpcctl xprt remove xprt-4" +Remove the xprt named "xprt-4" from the system. +.IP "\fBrpcctl xprt set xprt-3 dstaddr https://linux-nfs.org +Change the dstaddr of the xprt named "xprt-3" to point to linux-nfs.org +.SH DIRECTORY +.TP +.B /sys/kernel/sunrpc/ +.SH AUTHOR +Anna Schumaker <Anna.Schumaker@Netapp.com> diff --git a/tools/rpcctl/rpcctl.py b/tools/rpcctl/rpcctl.py new file mode 100755 index 0000000..d2110ad --- /dev/null +++ b/tools/rpcctl/rpcctl.py @@ -0,0 +1,262 @@ +#!/usr/bin/python3 +import argparse +import collections +import errno +import os +import pathlib +import socket +import sys + +with open("/proc/mounts", 'r') as f: + mount = [ line.split()[1] for line in f if "sysfs" in line ] + if len(mount) == 0: + print("ERROR: sysfs is not mounted") + sys.exit(1) + +sunrpc = pathlib.Path(mount[0]) / "kernel" / "sunrpc" +if not sunrpc.is_dir(): + print("ERROR: sysfs does not have sunrpc directory") + sys.exit(1) + +def read_addr_file(path): + try: + with open(path, 'r') as f: + return f.readline().strip() + except: + return "(enoent)" + +def write_addr_file(path, newaddr): + with open(path, 'w') as f: + f.write(newaddr) + return read_addr_file(path) + +def read_info_file(path): + res = collections.defaultdict(int) + try: + with open(path) as info: + lines = [ l.split("=", 1) for l in info if "=" in l ] + res.update({ key:int(val.strip()) for (key, val) in lines }) + finally: + return res + + +class Xprt: + def __init__(self, path): + self.path = path + self.name = path.stem.rsplit("-", 1)[0] + self.type = path.stem.split("-")[2] + self.info = read_info_file(path / "xprt_info") + self.dstaddr = read_addr_file(path / "dstaddr") + self.srcaddr = read_addr_file(path / "srcaddr") + self.read_state() + + def __lt__(self, rhs): + return self.name < rhs.name + + def _xprt(self): + main = ", main" if self.info.get("main_xprt") else "" + return f"{self.name}: {self.type}, {self.dstaddr}, " \ + f"port {self.info['dst_port']}, state <{self.state}>{main}" + + def _src_reqs(self): + return f" Source: {self.srcaddr}, port {self.info['src_port']}, " \ + f"Requests: {self.info['num_reqs']}" + + def _cong_slots(self): + return f" Congestion: cur {self.info['cur_cong']}, win {self.info['cong_win']}, " \ + f"Slots: min {self.info['min_num_slots']}, max {self.info['max_num_slots']}" + + def _queues(self): + return f" Queues: binding {self.info['binding_q_len']}, " \ + f"sending {self.info['sending_q_len']}, pending {self.info['pending_q_len']}, " \ + f"backlog {self.info['backlog_q_len']}, tasks {self.info['tasks_queuelen']}" + + def __str__(self): + if not self.path.exists(): + return f"{self.name}: has been removed" + return "\n".join([self._xprt(), self._src_reqs(), + self._cong_slots(), self._queues() ]) + + def read_state(self): + if self.path.exists(): + with open(self.path / "xprt_state") as f: + self.state = ','.join(f.readline().split()[1:]) + + def small_str(self): + main = " [main]" if self.info.get("main_xprt") else "" + return f"{self.name}: {self.type}, {self.dstaddr}{main}" + + def set_dstaddr(self, newaddr): + self.dstaddr = write_addr_file(self.path / "dstaddr", newaddr) + + def set_state(self, state): + if self.info.get("main_xprt"): + raise Exception(f"Main xprts cannot be set {state}") + with open(self.path / "xprt_state", 'w') as f: + f.write(state) + self.read_state() + + def remove(self): + if self.info.get("main_xprt"): + raise Exception("Main xprts cannot be removed") + self.set_state("offline") + self.set_state("remove") + + def add_command(subparser): + parser = subparser.add_parser("xprt", help="Commands for individual xprts") + parser.set_defaults(func=Xprt.show, xprt=None) + subparser = parser.add_subparsers() + + remove = subparser.add_parser("remove", help="Remove an xprt") + remove.add_argument("xprt", metavar="XPRT", nargs=1, + help="Name of the xprt to remove") + remove.set_defaults(func=Xprt.set_property, property="remove") + + show = subparser.add_parser("show", help="Show xprts") + show.add_argument("xprt", metavar="XPRT", nargs='?', + help="Name of a specific xprt to show") + show.set_defaults(func=Xprt.show) + + set = subparser.add_parser("set", help="Change an xprt property") + set.add_argument("xprt", metavar="XPRT", nargs=1, + help="Name of a specific xprt to modify") + subparser = set.add_subparsers(required=True) + online = subparser.add_parser("online", help="Set an xprt online") + online.set_defaults(func=Xprt.set_property, property="online") + offline = subparser.add_parser("offline", help="Set an xprt offline") + offline.set_defaults(func=Xprt.set_property, property="offline") + dstaddr = subparser.add_parser("dstaddr", help="Change an xprt's dstaddr") + dstaddr.add_argument("newaddr", metavar="NEWADDR", nargs=1, + help="The new address for the xprt") + dstaddr.set_defaults(func=Xprt.set_property, property="dstaddr") + + def get_by_name(name): + glob = f"**/{name}-*" if name else "**/xprt-*" + res = [ Xprt(x) for x in (sunrpc / "xprt-switches").glob(glob) ] + if name and len(res) == 0: + raise FileNotFoundError(errno.ENOENT, os.strerror(errno.ENOENT), + f"{sunrpc / 'xprt-switches' / glob}") + return sorted(res) + + def show(args): + for xprt in Xprt.get_by_name(args.xprt): + print(xprt) + + def set_property(args): + for xprt in Xprt.get_by_name(args.xprt[0]): + if args.property == "dstaddr": + xprt.set_dstaddr(socket.gethostbyname(args.newaddr[0])) + elif args.property == "remove": + xprt.remove() + else: + xprt.set_state(args.property) + print(xprt) + + +class XprtSwitch: + def __init__(self, path, sep=":"): + self.path = path + self.name = path.stem + self.info = read_info_file(path / "xprt_switch_info") + self.xprts = sorted([ Xprt(p) for p in self.path.iterdir() if p.is_dir() ]) + self.sep = sep + + def __lt__(self, rhs): + return self.name < rhs.name + + def __str__(self): + switch = f"{self.name}{self.sep} " \ + f"xprts {self.info['num_xprts']}, " \ + f"active {self.info['num_active']}, " \ + f"queue {self.info['queue_len']}" + xprts = [ f" {x.small_str()}" for x in self.xprts ] + return "\n".join([ switch ] + xprts) + + def add_command(subparser): + parser = subparser.add_parser("switch", help="Commands for xprt switches") + parser.set_defaults(func=XprtSwitch.show, switch=None) + subparser = parser.add_subparsers() + + show = subparser.add_parser("show", help="Show xprt switches") + show.add_argument("switch", metavar="SWITCH", nargs='?', + help="Name of a specific switch to show") + show.set_defaults(func=XprtSwitch.show) + + set = subparser.add_parser("set", help="Change an xprt switch property") + set.add_argument("switch", metavar="SWITCH", nargs=1, + help="Name of a specific xprt switch to modify") + subparser = set.add_subparsers(required=True) + dstaddr = subparser.add_parser("dstaddr", help="Change an xprt switch's dstaddr") + dstaddr.add_argument("newaddr", metavar="NEWADDR", nargs=1, + help="The new address for the xprt switch") + dstaddr.set_defaults(func=XprtSwitch.set_property, property="dstaddr") + + def get_by_name(name): + xprt_switches = sunrpc / "xprt-switches" + if name: + return [ XprtSwitch(xprt_switches / name) ] + return [ XprtSwitch(f) for f in sorted(xprt_switches.iterdir()) ] + + def show(args): + for switch in XprtSwitch.get_by_name(args.switch): + print(switch) + + def set_property(args): + for switch in XprtSwitch.get_by_name(args.switch[0]): + resolved = socket.gethostbyname(args.newaddr[0]) + for xprt in switch.xprts: + xprt.set_dstaddr(resolved) + print(switch) + + +class RpcClient: + def __init__(self, path): + self.path = path + self.name = path.stem + self.switch = XprtSwitch(path / (path / "switch").readlink(), sep=",") + + def __lt__(self, rhs): + return self.name < rhs.name + + def __str__(self): + return f"{self.name}: {self.switch}" + + def add_command(subparser): + parser = subparser.add_parser("client", help="Commands for rpc clients") + parser.set_defaults(func=RpcClient.show, client=None) + subparser = parser.add_subparsers() + + show = subparser.add_parser("show", help="Show rpc clients") + show.add_argument("client", metavar="CLIENT", nargs='?', + help="Name of a specific rpc client to show") + parser.set_defaults(func=RpcClient.show) + + def get_by_name(name): + rpc_clients = sunrpc / "rpc-clients" + if name: + return [ RpcClient(rpc_clients / name) ] + return [ RpcClient(f) for f in sorted(rpc_clients.iterdir()) ] + + def show(args): + for client in RpcClient.get_by_name(args.client): + print(client) + + +parser = argparse.ArgumentParser() + +def show_small_help(args): + parser.print_usage() + print("sunrpc dir:", sunrpc) +parser.set_defaults(func=show_small_help) + +subparser = parser.add_subparsers(title="commands") +RpcClient.add_command(subparser) +XprtSwitch.add_command(subparser) +Xprt.add_command(subparser) + +args = parser.parse_args() +try: + args.func(args) +except Exception as e: + print(str(e)) + sys.exit(1) |