diff options
Diffstat (limited to 'geo-replication/syncdaemon/resource.py')
| -rw-r--r-- | geo-replication/syncdaemon/resource.py | 1389 |
1 files changed, 605 insertions, 784 deletions
diff --git a/geo-replication/syncdaemon/resource.py b/geo-replication/syncdaemon/resource.py index c617c7b312e..f5a19629e7a 100644 --- a/geo-replication/syncdaemon/resource.py +++ b/geo-replication/syncdaemon/resource.py @@ -13,25 +13,24 @@ import os import sys import stat import time -import signal import fcntl import types import struct -import socket import logging import tempfile import subprocess -import errno from errno import EEXIST, ENOENT, ENODATA, ENOTDIR, ELOOP, EACCES from errno import EISDIR, ENOTEMPTY, ESTALE, EINVAL, EBUSY, EPERM -import shutil +import errno + +from rconf import rconf +import gsyncdconfig as gconf -from gconf import gconf import repce from repce import RepceServer, RepceClient from master import gmaster_builder import syncdutils -from syncdutils import GsyncdError, select, privileged, boolify, funcode +from syncdutils import GsyncdError, select, privileged, funcode from syncdutils import umask, entry2pb, gauxpfx, errno_wrap, lstat from syncdutils import NoStimeAvailable, PartialHistoryAvailable from syncdutils import ChangelogException, ChangelogHistoryNotAvailable @@ -39,13 +38,9 @@ from syncdutils import get_changelog_log_level, get_rsync_version from syncdutils import CHANGELOG_AGENT_CLIENT_VERSION from syncdutils import GX_GFID_CANONICAL_LEN from gsyncdstatus import GeorepStatus -from syncdutils import get_master_and_slave_data_from_args from syncdutils import mntpt_list, lf, Popen, sup, Volinfo from syncdutils import Xattr, matching_disk_gfid, get_gfid_from_mnt -UrlRX = re.compile('\A(\w+)://([^ *?[]*)\Z') -HostRX = re.compile('[a-zA-Z\d](?:[a-zA-Z\d.-]*[a-zA-Z\d])?', re.I) -UserRX = re.compile("[\w!\#$%&'*+-\/=?^_`{|}~]+") ENOTSUP = getattr(errno, 'ENOTSUP', 'EOPNOTSUPP') @@ -53,58 +48,6 @@ slv_volume = None slv_host = None slv_bricks = None -def desugar(ustr): - """transform sugared url strings to standard <scheme>://<urlbody> form - - parsing logic enforces the constraint that sugared forms should contatin - a ':' or a '/', which ensures that sugared urls do not conflict with - gluster volume names. - """ - m = re.match('([^:]*):(.*)', ustr) - if m: - if not m.groups()[0]: - return "gluster://localhost" + ustr - elif '@' in m.groups()[0] or re.search('[:/]', m.groups()[1]): - return "ssh://" + ustr - else: - return "gluster://" + ustr - else: - if ustr[0] != '/': - raise GsyncdError("cannot resolve sugared url '%s'" % ustr) - ap = os.path.normpath(ustr) - if ap.startswith('//'): - ap = ap[1:] - return "file://" + ap - - -def gethostbyname(hnam): - """gethostbyname wrapper""" - try: - return socket.gethostbyname(hnam) - except socket.gaierror: - ex = sys.exc_info()[1] - raise GsyncdError("failed to resolve %s: %s" % - (hnam, ex.strerror)) - - -def parse_url(ustr): - """instantiate an url object by scheme-to-class dispatch - - The url classes taken into consideration are the ones in - this module whose names are full-caps. - """ - m = UrlRX.match(ustr) - if not m: - ustr = desugar(ustr) - m = UrlRX.match(ustr) - if not m: - raise GsyncdError("malformed url") - sch, path = m.groups() - this = sys.modules[__name__] - if not hasattr(this, sch.upper()): - raise GsyncdError("unknown url scheme " + sch) - return getattr(this, sch.upper())(path) - class Server(object): @@ -149,14 +92,14 @@ class Server(object): fc = funcode(f) pi = list(fc.co_varnames).index('path') - def ff(*a): - path = a[pi] + def ff(*args): + path = args[pi] ps = path.split('/') if path[0] == '/' or '..' in ps: raise ValueError('unsafe path') - a = list(a) - a[pi] = os.path.join(a[0].local_path, path) - return f(*a) + args = list(args) + args[pi] = os.path.join(args[0].local_path, path) + return f(*args) return ff @classmethod @@ -493,7 +436,8 @@ class Server(object): else: en = e['entry'] disk_gfid = get_gfid_from_mnt(en) - if isinstance(disk_gfid, basestring) and e['gfid'] != disk_gfid: + if isinstance(disk_gfid, basestring) and \ + e['gfid'] != disk_gfid: slv_entry_info['gfid_mismatch'] = True st = lstat(en) if not isinstance(st, int): @@ -560,7 +504,6 @@ class Server(object): [ENOENT, EEXIST], [ESTALE, EBUSY]) collect_failure(e, cmd_ret) - for e in entries: blob = None op = e['op'] @@ -636,19 +579,21 @@ class Server(object): global slv_volume global slv_host if not slv_bricks: - slv_info = Volinfo (slv_volume, slv_host) + slv_info = Volinfo(slv_volume, slv_host) slv_bricks = slv_info.bricks # Result of readlink would be of format as below. # readlink = "../../pgfid[0:2]/pgfid[2:4]/pgfid/basename" realpath = os.readlink(os.path.join(slv_bricks[0]['dir'], - ".glusterfs", gfid[0:2], - gfid[2:4], gfid)) + ".glusterfs", + gfid[0:2], + gfid[2:4], + gfid)) realpath_parts = realpath.split('/') src_pargfid = realpath_parts[-2] src_basename = realpath_parts[-1] src_entry = os.path.join(pfx, src_pargfid, src_basename) logging.info(lf("Special case: rename on mkdir", - gfid=gfid, entry=repr(entry))) + gfid=gfid, entry=repr(entry))) rename_with_disk_gfid_confirmation(gfid, src_entry, entry) elif op == 'LINK': slink = os.path.join(pfx, gfid) @@ -735,7 +680,7 @@ class Server(object): [pg, 'glusterfs.gfid.newfile', blob], [EEXIST, ENOENT], [ESTALE, EINVAL, EBUSY]) - failed = collect_failure(e, cmd_ret) + collect_failure(e, cmd_ret) # If UID/GID is different than zero that means we are trying # create Entry with different UID/GID. Create Entry with @@ -852,274 +797,239 @@ class Server(object): return 1.0 -class SlaveLocal(object): +class Mounter(object): - """mix-in class to implement some factes of a slave server - - ("mix-in" is sort of like "abstract class", ie. it's not - instantiated just included in the ancesty DAG. I use "mix-in" - to indicate that it's not used as an abstract base class, - rather just taken in to implement additional functionality - on the basis of the assumed availability of certain interfaces.) - """ + """Abstract base class for mounter backends""" - def can_connect_to(self, remote): - """determine our position in the connectibility matrix""" - return not remote - - def service_loop(self): - """start a RePCe server serving self's server - - stop servicing if a timeout is configured and got no - keep-alime in that inteval - """ - - if boolify(gconf.use_rsync_xattrs) and not privileged(): - raise GsyncdError( - "using rsync for extended attributes is not supported") - - repce = RepceServer( - self.server, sys.stdin, sys.stdout, int(gconf.sync_jobs)) - t = syncdutils.Thread(target=lambda: (repce.service_loop(), - syncdutils.finalize())) - t.start() - logging.info("slave listening") - if gconf.timeout and int(gconf.timeout) > 0: - while True: - lp = self.server.last_keep_alive - time.sleep(int(gconf.timeout)) - if lp == self.server.last_keep_alive: - logging.info( - lf("connection inactive, stopping", - timeout=int(gconf.timeout))) - break - else: - select((), (), ()) + def __init__(self, params): + self.params = params + self.mntpt = None + @classmethod + def get_glusterprog(cls): + return os.path.join(gconf.get("gluster-command-dir"), + cls.glusterprog) + + def umount_l(self, d): + """perform lazy umount""" + po = Popen(self.make_umount_argv(d), stderr=subprocess.PIPE) + po.wait() + return po -class SlaveRemote(object): + @classmethod + def make_umount_argv(cls, d): + raise NotImplementedError - """mix-in class to implement an interface to a remote slave""" + def make_mount_argv(self, label=None): + raise NotImplementedError - def connect_remote(self, rargs=[], **opts): - """connects to a remote slave + def cleanup_mntpt(self, *a): + pass - Invoke an auxiliary utility (slave gsyncd, possibly wrapped) - which sets up the connection and set up a RePCe client to - communicate throuh its stdio. - """ - slave = opts.get('slave', self.url) - extra_opts = [] - so = getattr(gconf, 'session_owner', None) - if so: - extra_opts += ['--session-owner', so] - li = getattr(gconf, 'local_id', None) - if li: - extra_opts += ['--local-id', li] - ln = getattr(gconf, 'local_node', None) - if ln: - extra_opts += ['--local-node', ln] - if boolify(gconf.use_rsync_xattrs): - extra_opts.append('--use-rsync-xattrs') - if boolify(gconf.access_mount): - extra_opts.append('--access-mount') - po = Popen(rargs + gconf.remote_gsyncd.split() + extra_opts + - ['-N', '--listen', '--timeout', str(gconf.timeout), - slave], - stdin=subprocess.PIPE, stdout=subprocess.PIPE, - stderr=subprocess.PIPE) - gconf.transport = po - return self.start_fd_client(po.stdout, po.stdin, **opts) + def handle_mounter(self, po): + po.wait() - def start_fd_client(self, i, o, **opts): - """set up RePCe client, handshake with server + def inhibit(self, label): + """inhibit a gluster filesystem - It's cut out as a separate method to let - subclasses hook into client startup + Mount glusterfs over a temporary mountpoint, + change into the mount, and lazy unmount the + filesystem. """ - self.server = RepceClient(i, o) - rv = self.server.__version__() - exrv = {'proto': repce.repce_version, 'object': Server.version()} - da0 = (rv, exrv) - da1 = ({}, {}) - for i in range(2): - for k, v in da0[i].iteritems(): - da1[i][k] = int(v) - if da1[0] != da1[1]: - raise GsyncdError( - "RePCe major version mismatch: local %s, remote %s" % - (exrv, rv)) - - def rsync(self, files, *args, **kw): - """invoke rsync""" - if not files: - raise GsyncdError("no files to sync") - logging.debug("files: " + ", ".join(files)) - - extra_rsync_flags = [] - # Performance flag, --ignore-missing-args, if rsync version is - # greater than 3.1.0 then include this flag. - if boolify(gconf.rsync_opt_ignore_missing_args) and \ - get_rsync_version(gconf.rsync_command) >= "3.1.0": - extra_rsync_flags = ["--ignore-missing-args"] - - argv = gconf.rsync_command.split() + \ - ['-aR0', '--inplace', '--files-from=-', '--super', - '--stats', '--numeric-ids', '--no-implied-dirs'] + \ - (boolify(gconf.rsync_opt_existing) and ['--existing'] or []) + \ - gconf.rsync_options.split() + \ - (boolify(gconf.sync_xattrs) and ['--xattrs'] or []) + \ - (boolify(gconf.sync_acls) and ['--acls'] or []) + \ - extra_rsync_flags + \ - ['.'] + list(args) - - log_rsync_performance = boolify(gconf.configinterface.get_realtime( - "log_rsync_performance", default_value=False)) + access_mount = gconf.get("access-mount") + if rconf.args.subcmd == "slave": + access_mount = gconf.get("slave-access-mount") + + mpi, mpo = os.pipe() + mh = Popen.fork() + if mh: + # Parent + os.close(mpi) + fcntl.fcntl(mpo, fcntl.F_SETFD, fcntl.FD_CLOEXEC) + d = None + margv = self.make_mount_argv(label) + if self.mntpt: + # mntpt is determined pre-mount + d = self.mntpt + os.write(mpo, d + '\0') + po = Popen(margv, **self.mountkw) + self.handle_mounter(po) + po.terminate_geterr() + logging.debug('auxiliary glusterfs mount in place') + if not d: + # mntpt is determined during mount + d = self.mntpt + os.write(mpo, d + '\0') + os.write(mpo, 'M') + t = syncdutils.Thread(target=lambda: os.chdir(d)) + t.start() + tlim = rconf.starttime + gconf.get("connection-timeout") + while True: + if not t.isAlive(): + break - if log_rsync_performance: - # use stdout=PIPE only when log_rsync_performance enabled - # Else rsync will write to stdout and nobody is their - # to consume. If PIPE is full rsync hangs. - po = Popen(argv, stdin=subprocess.PIPE, stdout=subprocess.PIPE, - stderr=subprocess.PIPE) + if time.time() >= tlim: + syncdutils.finalize(exval=1) + time.sleep(1) + os.close(mpo) + _, rv = syncdutils.waitpid(mh, 0) + if rv: + rv = (os.WIFEXITED(rv) and os.WEXITSTATUS(rv) or 0) - \ + (os.WIFSIGNALED(rv) and os.WTERMSIG(rv) or 0) + logging.warn(lf('stale mount possibly left behind', + path=d)) + raise GsyncdError("cleaning up temp mountpoint %s " + "failed with status %d" % + (d, rv)) else: - po = Popen(argv, stdin=subprocess.PIPE, stderr=subprocess.PIPE) + rv = 0 + try: + os.setsid() + os.close(mpo) + mntdata = '' + while True: + c = os.read(mpi, 1) + if not c: + break + mntdata += c + if mntdata: + mounted = False + if mntdata[-1] == 'M': + mntdata = mntdata[:-1] + assert(mntdata) + mounted = True + assert(mntdata[-1] == '\0') + mntpt = mntdata[:-1] + assert(mntpt) + if mounted and not access_mount: + po = self.umount_l(mntpt) + po.terminate_geterr(fail_on_err=False) + if po.returncode != 0: + po.errlog() + rv = po.returncode + if not access_mount: + self.cleanup_mntpt(mntpt) + except: + logging.exception('mount cleanup failure:') + rv = 200 + os._exit(rv) + logging.debug('auxiliary glusterfs mount prepared') + + +class DirectMounter(Mounter): + + """mounter backend which calls mount(8), umount(8) directly""" + + mountkw = {'stderr': subprocess.PIPE} + glusterprog = 'glusterfs' - for f in files: - po.stdin.write(f) - po.stdin.write('\0') + @staticmethod + def make_umount_argv(d): + return ['umount', '-l', d] - stdout, stderr = po.communicate() + def make_mount_argv(self, label=None): + self.mntpt = tempfile.mkdtemp(prefix='gsyncd-aux-mount-') + mntpt_list.append(self.mntpt) + return [self.get_glusterprog()] + \ + ['--' + p for p in self.params] + [self.mntpt] - if kw.get("log_err", False): - for errline in stderr.strip().split("\n")[:-1]: - logging.error(lf("SYNC Error", - sync_engine="Rsync", - error=errline)) + def cleanup_mntpt(self, mntpt=None): + if not mntpt: + mntpt = self.mntpt + errno_wrap(os.rmdir, [mntpt], [ENOENT, EBUSY]) - if log_rsync_performance: - rsync_msg = [] - for line in stdout.split("\n"): - if line.startswith("Number of files:") or \ - line.startswith("Number of regular files transferred:") or \ - line.startswith("Total file size:") or \ - line.startswith("Total transferred file size:") or \ - line.startswith("Literal data:") or \ - line.startswith("Matched data:") or \ - line.startswith("Total bytes sent:") or \ - line.startswith("Total bytes received:") or \ - line.startswith("sent "): - rsync_msg.append(line) - logging.info(lf("rsync performance", - data=", ".join(rsync_msg))) - return po +class MountbrokerMounter(Mounter): - def tarssh(self, files, slaveurl, log_err=False): - """invoke tar+ssh - -z (compress) can be use if needed, but omitting it now - as it results in weird error (tar+ssh errors out (errcode: 2) - """ - if not files: - raise GsyncdError("no files to sync") - logging.debug("files: " + ", ".join(files)) - (host, rdir) = slaveurl.split(':') - tar_cmd = ["tar"] + \ - ["--sparse", "-cf", "-", "--files-from", "-"] - ssh_cmd = gconf.ssh_command_tar.split() + \ - ["-p", str(gconf.ssh_port)] + \ - [host, "tar"] + \ - ["--overwrite", "-xf", "-", "-C", rdir] - p0 = Popen(tar_cmd, stdout=subprocess.PIPE, - stdin=subprocess.PIPE, stderr=subprocess.PIPE) - p1 = Popen(ssh_cmd, stdin=p0.stdout, stderr=subprocess.PIPE) - for f in files: - p0.stdin.write(f) - p0.stdin.write('\n') + """mounter backend using the mountbroker gluster service""" - p0.stdin.close() - p0.stdout.close() # Allow p0 to receive a SIGPIPE if p1 exits. - # wait for tar to terminate, collecting any errors, further - # waiting for transfer to complete - _, stderr1 = p1.communicate() + mountkw = {'stderr': subprocess.PIPE, 'stdout': subprocess.PIPE} + glusterprog = 'gluster' - # stdin and stdout of p0 is already closed, Reset to None and - # wait for child process to complete - p0.stdin = None - p0.stdout = None - p0.communicate() - - if log_err: - for errline in stderr1.strip().split("\n")[:-1]: - logging.error(lf("SYNC Error", - sync_engine="Tarssh", - error=errline)) - - return p1 + @classmethod + def make_cli_argv(cls): + return [cls.get_glusterprog()] + ['--remote-host=localhost'] + \ + gconf.get("gluster-cli-options").split() + ['system::'] + @classmethod + def make_umount_argv(cls, d): + return cls.make_cli_argv() + ['umount', d, 'lazy'] -class AbstractUrl(object): + def make_mount_argv(self, label): + return self.make_cli_argv() + \ + ['mount', label, 'user-map-root=' + + syncdutils.getusername()] + self.params - """abstract base class for url scheme classes""" + def handle_mounter(self, po): + self.mntpt = po.stdout.readline()[:-1] + po.stdout.close() + sup(self, po) + if po.returncode != 0: + # if cli terminated with error due to being + # refused by glusterd, what it put + # out on stdout is a diagnostic message + logging.error(lf('glusterd answered', mnt=self.mntpt)) - def __init__(self, path, pattern): - m = re.search(pattern, path) - if not m: - raise GsyncdError("malformed path") - self.path = path - return m.groups() - @property - def scheme(self): - return type(self).__name__.lower() +class GLUSTERServer(Server): - def canonical_path(self): - return self.path + "server enhancements for a glusterfs backend""" - def get_url(self, canonical=False, escaped=False): - """format self's url in various styles""" - if canonical: - pa = self.canonical_path() + @classmethod + def _attr_unpack_dict(cls, xattr, extra_fields=''): + """generic volume mark fetching/parsing backed""" + fmt_string = cls.NTV_FMTSTR + extra_fields + buf = Xattr.lgetxattr('.', xattr, struct.calcsize(fmt_string)) + vm = struct.unpack(fmt_string, buf) + m = re.match( + '(.{8})(.{4})(.{4})(.{4})(.{12})', + "".join(['%02x' % x for x in vm[2:18]])) + uuid = '-'.join(m.groups()) + volinfo = {'version': vm[0:2], + 'uuid': uuid, + 'retval': vm[18], + 'volume_mark': vm[19:21], + } + if extra_fields: + return volinfo, vm[-len(extra_fields):] else: - pa = self.path - u = "://".join((self.scheme, pa)) - if escaped: - u = syncdutils.escape(u) - return u - - @property - def url(self): - return self.get_url() - - -class FILE(AbstractUrl, SlaveLocal, SlaveRemote): - - """scheme class for file:// urls - - can be used to represent a file slave server - on slave side, or interface to a remote file - file server on master side - """ - - class FILEServer(Server): - - """included server flavor""" - pass - - server = FILEServer - - def __init__(self, path): - sup(self, path, '^/') + return volinfo - def connect(self): - """inhibit the resource beyond""" - os.chdir(self.path) + @classmethod + def foreign_volume_infos(cls): + """return list of valid (not expired) foreign volume marks""" + dict_list = [] + xattr_list = Xattr.llistxattr_buf('.') + for ele in xattr_list: + if ele.find('.'.join([cls.GX_NSPACE, 'volume-mark', ''])) == 0: + d, x = cls._attr_unpack_dict(ele, cls.FRGN_XTRA_FMT) + now = int(time.time()) + if x[0] > now: + logging.debug("volinfo[%s] expires: %d " + "(%d sec later)" % + (d['uuid'], x[0], x[0] - now)) + d['timeout'] = x[0] + dict_list.append(d) + else: + try: + Xattr.lremovexattr('.', ele) + except OSError: + pass + return dict_list - def rsync(self, files, log_err=False): - return sup(self, files, self.path, log_err=log_err) + @classmethod + def native_volume_info(cls): + """get the native volume mark of the underlying gluster volume""" + try: + return cls._attr_unpack_dict('.'.join([cls.GX_NSPACE, + 'volume-mark'])) + except OSError: + ex = sys.exc_info()[1] + if ex.errno != ENODATA: + raise -class GLUSTER(AbstractUrl, SlaveLocal, SlaveRemote): +class GLUSTER(object): """scheme class for gluster:// urls @@ -1129,247 +1039,18 @@ class GLUSTER(AbstractUrl, SlaveLocal, SlaveRemote): (slave-ish features come from the mixins, master functionality is outsourced to GMaster from master) """ - - class GLUSTERServer(Server): - - "server enhancements for a glusterfs backend""" - - @classmethod - def _attr_unpack_dict(cls, xattr, extra_fields=''): - """generic volume mark fetching/parsing backed""" - fmt_string = cls.NTV_FMTSTR + extra_fields - buf = Xattr.lgetxattr('.', xattr, struct.calcsize(fmt_string)) - vm = struct.unpack(fmt_string, buf) - m = re.match( - '(.{8})(.{4})(.{4})(.{4})(.{12})', - "".join(['%02x' % x for x in vm[2:18]])) - uuid = '-'.join(m.groups()) - volinfo = {'version': vm[0:2], - 'uuid': uuid, - 'retval': vm[18], - 'volume_mark': vm[19:21], - } - if extra_fields: - return volinfo, vm[-len(extra_fields):] - else: - return volinfo - - @classmethod - def foreign_volume_infos(cls): - """return list of valid (not expired) foreign volume marks""" - dict_list = [] - xattr_list = Xattr.llistxattr_buf('.') - for ele in xattr_list: - if ele.find('.'.join([cls.GX_NSPACE, 'volume-mark', ''])) == 0: - d, x = cls._attr_unpack_dict(ele, cls.FRGN_XTRA_FMT) - now = int(time.time()) - if x[0] > now: - logging.debug("volinfo[%s] expires: %d " - "(%d sec later)" % - (d['uuid'], x[0], x[0] - now)) - d['timeout'] = x[0] - dict_list.append(d) - else: - try: - Xattr.lremovexattr('.', ele) - except OSError: - pass - return dict_list - - @classmethod - def native_volume_info(cls): - """get the native volume mark of the underlying gluster volume""" - try: - return cls._attr_unpack_dict('.'.join([cls.GX_NSPACE, - 'volume-mark'])) - except OSError: - ex = sys.exc_info()[1] - if ex.errno != ENODATA: - raise - server = GLUSTERServer - def __init__(self, path): - self.host, self.volume = sup(self, path, '^(%s):(.+)' % HostRX.pattern) + def __init__(self, host, volume): + self.path = "%s:%s" % (host, volume) + self.host = host + self.volume = volume global slv_volume global slv_host slv_volume = self.volume slv_host = self.host - def canonical_path(self): - return ':'.join([gethostbyname(self.host), self.volume]) - - def can_connect_to(self, remote): - """determine our position in the connectibility matrix""" - return not remote or \ - (isinstance(remote, SSH) and isinstance(remote.inner_rsc, GLUSTER)) - - class Mounter(object): - - """Abstract base class for mounter backends""" - - def __init__(self, params): - self.params = params - self.mntpt = None - - @classmethod - def get_glusterprog(cls): - return os.path.join(gconf.gluster_command_dir, cls.glusterprog) - - def umount_l(self, d): - """perform lazy umount""" - po = Popen(self.make_umount_argv(d), stderr=subprocess.PIPE) - po.wait() - return po - - @classmethod - def make_umount_argv(cls, d): - raise NotImplementedError - - def make_mount_argv(self, *a): - raise NotImplementedError - - def cleanup_mntpt(self, *a): - pass - - def handle_mounter(self, po): - po.wait() - - def inhibit(self, *a): - """inhibit a gluster filesystem - - Mount glusterfs over a temporary mountpoint, - change into the mount, and lazy unmount the - filesystem. - """ - - mpi, mpo = os.pipe() - mh = Popen.fork() - if mh: - os.close(mpi) - fcntl.fcntl(mpo, fcntl.F_SETFD, fcntl.FD_CLOEXEC) - d = None - margv = self.make_mount_argv(*a) - if self.mntpt: - # mntpt is determined pre-mount - d = self.mntpt - os.write(mpo, d + '\0') - po = Popen(margv, **self.mountkw) - self.handle_mounter(po) - po.terminate_geterr() - logging.debug('auxiliary glusterfs mount in place') - if not d: - # mntpt is determined during mount - d = self.mntpt - os.write(mpo, d + '\0') - os.write(mpo, 'M') - t = syncdutils.Thread(target=lambda: os.chdir(d)) - t.start() - tlim = gconf.starttime + int(gconf.connection_timeout) - while True: - if not t.isAlive(): - break - if time.time() >= tlim: - syncdutils.finalize(exval=1) - time.sleep(1) - os.close(mpo) - _, rv = syncdutils.waitpid(mh, 0) - if rv: - rv = (os.WIFEXITED(rv) and os.WEXITSTATUS(rv) or 0) - \ - (os.WIFSIGNALED(rv) and os.WTERMSIG(rv) or 0) - logging.warn(lf('stale mount possibly left behind', - path=d)) - raise GsyncdError("cleaning up temp mountpoint %s " - "failed with status %d" % - (d, rv)) - else: - rv = 0 - try: - os.setsid() - os.close(mpo) - mntdata = '' - while True: - c = os.read(mpi, 1) - if not c: - break - mntdata += c - if mntdata: - mounted = False - if mntdata[-1] == 'M': - mntdata = mntdata[:-1] - assert(mntdata) - mounted = True - assert(mntdata[-1] == '\0') - mntpt = mntdata[:-1] - assert(mntpt) - if mounted and not boolify(gconf.access_mount): - po = self.umount_l(mntpt) - po.terminate_geterr(fail_on_err=False) - if po.returncode != 0: - po.errlog() - rv = po.returncode - if not boolify(gconf.access_mount): - self.cleanup_mntpt(mntpt) - except: - logging.exception('mount cleanup failure:') - rv = 200 - os._exit(rv) - logging.debug('auxiliary glusterfs mount prepared') - - class DirectMounter(Mounter): - - """mounter backend which calls mount(8), umount(8) directly""" - - mountkw = {'stderr': subprocess.PIPE} - glusterprog = 'glusterfs' - - @staticmethod - def make_umount_argv(d): - return ['umount', '-l', d] - - def make_mount_argv(self): - self.mntpt = tempfile.mkdtemp(prefix='gsyncd-aux-mount-') - mntpt_list.append(self.mntpt) - return [self.get_glusterprog()] + \ - ['--' + p for p in self.params] + [self.mntpt] - - def cleanup_mntpt(self, mntpt=None): - if not mntpt: - mntpt = self.mntpt - errno_wrap(os.rmdir, [mntpt], [ENOENT, EBUSY]) - - class MountbrokerMounter(Mounter): - - """mounter backend using the mountbroker gluster service""" - - mountkw = {'stderr': subprocess.PIPE, 'stdout': subprocess.PIPE} - glusterprog = 'gluster' - - @classmethod - def make_cli_argv(cls): - return [cls.get_glusterprog()] + ['--remote-host=localhost'] + \ - gconf.gluster_cli_options.split() + ['system::'] - - @classmethod - def make_umount_argv(cls, d): - return cls.make_cli_argv() + ['umount', d, 'lazy'] - - def make_mount_argv(self, label): - return self.make_cli_argv() + \ - ['mount', label, 'user-map-root=' + - syncdutils.getusername()] + self.params - - def handle_mounter(self, po): - self.mntpt = po.stdout.readline()[:-1] - po.stdout.close() - sup(self, po) - if po.returncode != 0: - # if cli terminated with error due to being - # refused by glusterd, what it put - # out on stdout is a diagnostic message - logging.error(lf('glusterd answered', mnt=self.mntpt)) - def connect(self): """inhibit the resource beyond @@ -1380,23 +1061,29 @@ class GLUSTER(AbstractUrl, SlaveLocal, SlaveRemote): logging.info("Mounting gluster volume locally...") t0 = time.time() - label = getattr(gconf, 'mountbroker', None) + label = gconf.get('mountbroker', None) if not label and not privileged(): label = syncdutils.getusername() - mounter = label and self.MountbrokerMounter or self.DirectMounter - params = gconf.gluster_params.split() + \ - (gconf.gluster_log_level and ['log-level=' + - gconf.gluster_log_level] or []) + \ - ['log-file=' + gconf.gluster_log_file, 'volfile-server=' + - self.host, 'volfile-id=' + self.volume, 'client-pid=-1'] - mounter(params).inhibit(*[l for l in [label] if l]) + mounter = label and MountbrokerMounter or DirectMounter + + log_file = gconf.get("gluster-log-file") + if rconf.args.subcmd == "slave": + log_file = gconf.get("slave-gluster-log-file") + + log_level = gconf.get("gluster-log-level") + if rconf.args.subcmd == "slave": + log_level = gconf.get("slave-gluster-log-level") + + params = gconf.get("gluster-params").split() + \ + ['log-level=' + log_level] + \ + ['log-file=' + log_file, 'volfile-server=' + self.host] + \ + ['volfile-id=' + self.volume, 'client-pid=-1'] + + self.mounter = mounter(params) + self.mounter.inhibit(label) logging.info(lf("Mounted gluster volume", duration="%.4f" % (time.time() - t0))) - def connect_remote(self, *a, **kw): - sup(self, *a, **kw) - self.slavedir = "/proc/%d/cwd" % self.server.pid() - def gmaster_instantiate_tuple(self, slave): """return a tuple of the 'one shot' and the 'main crawl' class instance""" @@ -1404,7 +1091,7 @@ class GLUSTER(AbstractUrl, SlaveLocal, SlaveRemote): gmaster_builder()(self, slave), gmaster_builder('changeloghistory')(self, slave)) - def service_loop(self, *args): + def service_loop(self, slave=None): """enter service loop - if slave given, instantiate GMaster and @@ -1412,171 +1099,183 @@ class GLUSTER(AbstractUrl, SlaveLocal, SlaveRemote): master behavior - else do that's what's inherited """ - if args: - slave = args[0] - if gconf.local_path: - class brickserver(FILE.FILEServer): - local_path = gconf.local_path - aggregated = self.server - - @classmethod - def entries(cls, path): - e = super(brickserver, cls).entries(path) - # on the brick don't mess with /.glusterfs - if path == '.': - try: - e.remove('.glusterfs') - e.remove('.trashcan') - except ValueError: - pass - return e - - @classmethod - def lstat(cls, e): - """ path based backend stat """ - return super(brickserver, cls).lstat(e) - - @classmethod - def gfid(cls, e): - """ path based backend gfid fetch """ - return super(brickserver, cls).gfid(e) - - @classmethod - def linkto_check(cls, e): - return super(brickserver, cls).linkto_check(e) - if gconf.slave_id: - # define {,set_}xtime in slave, thus preempting - # the call to remote, so that it takes data from - # the local brick - slave.server.xtime = types.MethodType( - lambda _self, path, uuid: ( - brickserver.xtime(path, - uuid + '.' + gconf.slave_id) - ), - slave.server) - slave.server.stime = types.MethodType( - lambda _self, path, uuid: ( - brickserver.stime(path, - uuid + '.' + gconf.slave_id) - ), - slave.server) - slave.server.entry_stime = types.MethodType( - lambda _self, path, uuid: ( - brickserver.entry_stime( - path, - uuid + '.' + gconf.slave_id) - ), - slave.server) - slave.server.set_stime = types.MethodType( - lambda _self, path, uuid, mark: ( - brickserver.set_stime(path, - uuid + '.' + gconf.slave_id, - mark) - ), - slave.server) - slave.server.set_entry_stime = types.MethodType( - lambda _self, path, uuid, mark: ( - brickserver.set_entry_stime( - path, - uuid + '.' + gconf.slave_id, - mark) - ), - slave.server) - (g1, g2, g3) = self.gmaster_instantiate_tuple(slave) - g1.master.server = brickserver - g2.master.server = brickserver - g3.master.server = brickserver - else: - (g1, g2, g3) = self.gmaster_instantiate_tuple(slave) - g1.master.server.aggregated = gmaster.master.server - g2.master.server.aggregated = gmaster.master.server - g3.master.server.aggregated = gmaster.master.server - # bad bad bad: bad way to do things like this - # need to make this elegant - # register the crawlers and start crawling - # g1 ==> Xsync, g2 ==> config.change_detector(changelog by default) - # g3 ==> changelog History - changelog_register_failed = False - (inf, ouf, ra, wa) = gconf.rpc_fd.split(',') - changelog_agent = RepceClient(int(inf), int(ouf)) - master_name, slave_data = get_master_and_slave_data_from_args( - sys.argv) - status = GeorepStatus(gconf.state_file, gconf.local_node, - gconf.local_path, - gconf.local_node_id, - master_name, slave_data) - status.reset_on_worker_start() - rv = changelog_agent.version() - if int(rv) != CHANGELOG_AGENT_CLIENT_VERSION: + if rconf.args.subcmd == "slave": + if gconf.get("use-rsync-xattrs") and not privileged(): raise GsyncdError( - "RePCe major version mismatch(changelog agent): " - "local %s, remote %s" % - (CHANGELOG_AGENT_CLIENT_VERSION, rv)) + "using rsync for extended attributes is not supported") + + repce = RepceServer( + self.server, sys.stdin, sys.stdout, gconf.get("sync-jobs")) + t = syncdutils.Thread(target=lambda: (repce.service_loop(), + syncdutils.finalize())) + t.start() + logging.info("slave listening") + if gconf.get("slave-timeout") and gconf.get("slave-timeout") > 0: + while True: + lp = self.server.last_keep_alive + time.sleep(gconf.get("slave-timeout")) + if lp == self.server.last_keep_alive: + logging.info( + lf("connection inactive, stopping", + timeout=gconf.get("slave-timeout"))) + break + else: + select((), (), ()) - try: - workdir = g2.setup_working_dir() - # Register only when change_detector is not set to - # xsync, else agent will generate changelog files - # in .processing directory of working dir - if gconf.change_detector != 'xsync': - # register with the changelog library - # 9 == log level (DEBUG) - # 5 == connection retries - changelog_agent.init() - changelog_agent.register(gconf.local_path, - workdir, gconf.changelog_log_file, - get_changelog_log_level( - gconf.changelog_log_level), - g2.CHANGELOG_CONN_RETRIES) - - register_time = int(time.time()) - g2.register(register_time, changelog_agent, status) - g3.register(register_time, changelog_agent, status) - except ChangelogException as e: - logging.error(lf("Changelog register failed", error=e)) - sys.exit(1) - - g1.register(status=status) - logging.info(lf("Register time", - time=register_time)) - # oneshot: Try to use changelog history api, if not - # available switch to FS crawl - # Note: if config.change_detector is xsync then - # it will not use changelog history api - try: - g3.crawlwrap(oneshot=True) - except PartialHistoryAvailable as e: - logging.info(lf('Partial history available, using xsync crawl' - ' after consuming history', - till=e)) - g1.crawlwrap(oneshot=True, register_time=register_time) - except ChangelogHistoryNotAvailable: - logging.info('Changelog history not available, using xsync') - g1.crawlwrap(oneshot=True, register_time=register_time) - except NoStimeAvailable: - logging.info('No stime available, using xsync crawl') - g1.crawlwrap(oneshot=True, register_time=register_time) - except ChangelogException as e: - logging.error(lf("Changelog History Crawl failed", - error=e)) - sys.exit(1) + return - try: - g2.crawlwrap() - except ChangelogException as e: - logging.error(lf("Changelog crawl failed", error=e)) - sys.exit(1) - else: - sup(self, *args) + class brickserver(Server): + local_path = rconf.args.local_path + aggregated = self.server + + @classmethod + def entries(cls, path): + e = super(brickserver, cls).entries(path) + # on the brick don't mess with /.glusterfs + if path == '.': + try: + e.remove('.glusterfs') + e.remove('.trashcan') + except ValueError: + pass + return e + + @classmethod + def lstat(cls, e): + """ path based backend stat """ + return super(brickserver, cls).lstat(e) + + @classmethod + def gfid(cls, e): + """ path based backend gfid fetch """ + return super(brickserver, cls).gfid(e) + + @classmethod + def linkto_check(cls, e): + return super(brickserver, cls).linkto_check(e) + + # define {,set_}xtime in slave, thus preempting + # the call to remote, so that it takes data from + # the local brick + slave.server.xtime = types.MethodType( + lambda _self, path, uuid: ( + brickserver.xtime(path, + uuid + '.' + rconf.args.slave_id) + ), + slave.server) + slave.server.stime = types.MethodType( + lambda _self, path, uuid: ( + brickserver.stime(path, + uuid + '.' + rconf.args.slave_id) + ), + slave.server) + slave.server.entry_stime = types.MethodType( + lambda _self, path, uuid: ( + brickserver.entry_stime( + path, + uuid + '.' + rconf.args.slave_id) + ), + slave.server) + slave.server.set_stime = types.MethodType( + lambda _self, path, uuid, mark: ( + brickserver.set_stime(path, + uuid + '.' + rconf.args.slave_id, + mark) + ), + slave.server) + slave.server.set_entry_stime = types.MethodType( + lambda _self, path, uuid, mark: ( + brickserver.set_entry_stime( + path, + uuid + '.' + rconf.args.slave_id, + mark) + ), + slave.server) + + (g1, g2, g3) = self.gmaster_instantiate_tuple(slave) + g1.master.server = brickserver + g2.master.server = brickserver + g3.master.server = brickserver + + # bad bad bad: bad way to do things like this + # need to make this elegant + # register the crawlers and start crawling + # g1 ==> Xsync, g2 ==> config.change_detector(changelog by default) + # g3 ==> changelog History + (inf, ouf, ra, wa) = rconf.args.rpc_fd.split(',') + changelog_agent = RepceClient(int(inf), int(ouf)) + + status = GeorepStatus(gconf.get("state-file"), + rconf.args.local_node, + rconf.args.local_path, + rconf.args.local_node_id, + rconf.args.master, + rconf.args.slave) + status.reset_on_worker_start() + rv = changelog_agent.version() + if int(rv) != CHANGELOG_AGENT_CLIENT_VERSION: + raise GsyncdError( + "RePCe major version mismatch(changelog agent): " + "local %s, remote %s" % + (CHANGELOG_AGENT_CLIENT_VERSION, rv)) - def rsync(self, files, log_err=False): - return sup(self, files, self.slavedir, log_err=log_err) + try: + workdir = g2.setup_working_dir() + # Register only when change_detector is not set to + # xsync, else agent will generate changelog files + # in .processing directory of working dir + if gconf.get("change-detector") != 'xsync': + # register with the changelog library + # 9 == log level (DEBUG) + # 5 == connection retries + changelog_agent.init() + changelog_agent.register(rconf.args.local_path, + workdir, + gconf.get("changelog-log-file"), + get_changelog_log_level( + gconf.get("changelog-log-level")), + g2.CHANGELOG_CONN_RETRIES) + + register_time = int(time.time()) + g2.register(register_time, changelog_agent, status) + g3.register(register_time, changelog_agent, status) + except ChangelogException as e: + logging.error(lf("Changelog register failed", error=e)) + sys.exit(1) + + g1.register(status=status) + logging.info(lf("Register time", + time=register_time)) + # oneshot: Try to use changelog history api, if not + # available switch to FS crawl + # Note: if config.change_detector is xsync then + # it will not use changelog history api + try: + g3.crawlwrap(oneshot=True) + except PartialHistoryAvailable as e: + logging.info(lf('Partial history available, using xsync crawl' + ' after consuming history', + till=e)) + g1.crawlwrap(oneshot=True, register_time=register_time) + except ChangelogHistoryNotAvailable: + logging.info('Changelog history not available, using xsync') + g1.crawlwrap(oneshot=True, register_time=register_time) + except NoStimeAvailable: + logging.info('No stime available, using xsync crawl') + g1.crawlwrap(oneshot=True, register_time=register_time) + except ChangelogException as e: + logging.error(lf("Changelog History Crawl failed", + error=e)) + sys.exit(1) - def tarssh(self, files, log_err=False): - return sup(self, files, self.slavedir, log_err=log_err) + try: + g2.crawlwrap() + except ChangelogException as e: + logging.error(lf("Changelog crawl failed", error=e)) + sys.exit(1) -class SSH(AbstractUrl, SlaveRemote): +class SSH(object): """scheme class for ssh:// urls @@ -1584,13 +1283,9 @@ class SSH(AbstractUrl, SlaveRemote): implementing an ssh based proxy """ - def __init__(self, path): - self.remote_addr, inner_url = sup(self, path, - '^((?:%s@)?%s):(.+)' % - tuple([r.pattern - for r in (UserRX, HostRX)])) - self.inner_rsc = parse_url(inner_url) - self.volume = inner_url[1:] + def __init__(self, host, volume): + self.remote_addr = host + self.volume = volume @staticmethod def parse_ssh_address(self): @@ -1602,35 +1297,28 @@ class SSH(AbstractUrl, SlaveRemote): self.remotehost = h return {'user': u, 'host': h} - def canonical_path(self): - rap = self.parse_ssh_address(self) - remote_addr = '@'.join([rap['user'], gethostbyname(rap['host'])]) - return ':'.join([remote_addr, self.inner_rsc.get_url(canonical=True)]) - - def can_connect_to(self, remote): - """determine our position in the connectibility matrix""" - return False - - def start_fd_client(self, *a, **opts): - """customizations for client startup + def start_fd_client(self, i, o): + """set up RePCe client, handshake with server - - be a no-op if we are to daemonize (client startup is deferred - to post-daemon stage) - - determine target url for rsync after consulting server + It's cut out as a separate method to let + subclasses hook into client startup """ - if opts.get('deferred'): - return a - sup(self, *a) - ityp = type(self.inner_rsc) - if ityp == FILE: - slavepath = self.inner_rsc.path - elif ityp == GLUSTER: - slavepath = "/proc/%d/cwd" % self.server.pid() - else: - raise NotImplementedError + self.server = RepceClient(i, o) + rv = self.server.__version__() + exrv = {'proto': repce.repce_version, 'object': Server.version()} + da0 = (rv, exrv) + da1 = ({}, {}) + for i in range(2): + for k, v in da0[i].iteritems(): + da1[i][k] = int(v) + if da1[0] != da1[1]: + raise GsyncdError( + "RePCe major version mismatch: local %s, remote %s" % + (exrv, rv)) + slavepath = "/proc/%d/cwd" % self.server.pid() self.slaveurl = ':'.join([self.remote_addr, slavepath]) - def connect_remote(self, go_daemon=None): + def connect_remote(self): """connect to inner slave url through outer ssh url Wrap the connecting utility in ssh. @@ -1648,49 +1336,182 @@ class SSH(AbstractUrl, SlaveRemote): [NB. ATM gluster product does not makes use of interactive authentication.] """ - if go_daemon == 'done': - return self.start_fd_client(*self.fd_pair) - syncdutils.setup_ssh_ctl(tempfile.mkdtemp(prefix='gsyncd-aux-ssh-'), self.remote_addr, - self.inner_rsc.url) + self.volume) - deferred = go_daemon == 'postconn' logging.info("Initializing SSH connection between master and slave...") t0 = time.time() - ret = sup(self, gconf.ssh_command.split() + - ["-p", str(gconf.ssh_port)] + - gconf.ssh_ctl_args + [self.remote_addr], - slave=self.inner_rsc.url, deferred=deferred) + + extra_opts = [] + remote_gsyncd = gconf.get("remote-gsyncd") + if remote_gsyncd == "": + remote_gsyncd = "/nonexistent/gsyncd" + + if gconf.get("use-rsync-xattrs"): + extra_opts.append('--use-rsync-xattrs') + + args_to_slave = [gconf.get("ssh-command")] + \ + gconf.get("ssh-options").split() + \ + ["-p", str(gconf.get("ssh-port"))] + \ + rconf.ssh_ctl_args + [self.remote_addr] + \ + [remote_gsyncd, "slave"] + \ + extra_opts + \ + [rconf.args.master, rconf.args.slave] + \ + [ + '--master-node', rconf.args.local_node, + '--master-node-id', rconf.args.local_node_id, + '--master-brick', rconf.args.local_path, + '--local-node', rconf.args.resource_remote, + '--local-node-id', rconf.args.resource_remote_id] + \ + [ + # Add all config arguments here, slave gsyncd will not use + # config file in slave side, so all overridding options should + # be sent as arguments + '--slave-timeout', str(gconf.get("slave-timeout")), + '--slave-log-level', gconf.get("slave-log-level"), + '--slave-gluster-log-level', + gconf.get("slave-gluster-log-level")] + + if gconf.get("slave-access-mount"): + args_to_slave.append('--slave-access-mount') + + if rconf.args.debug: + args_to_slave.append('--debug') + + po = Popen(args_to_slave, + stdin=subprocess.PIPE, stdout=subprocess.PIPE, + stderr=subprocess.PIPE) + rconf.transport = po + self.start_fd_client(po.stdout, po.stdin) logging.info(lf("SSH connection between master and slave established.", duration="%.4f" % (time.time() - t0))) - if deferred: - # send a message to peer so that we can wait for - # the answer from which we know connection is - # established and we can proceed with daemonization - # (doing that too early robs the ssh passwd prompt...) - # However, we'd better not start the RepceClient - # before daemonization (that's not preserved properly - # in daemon), we just do a an ad-hoc linear put/get. - i, o = ret - inf = os.fdopen(i) - repce.send(o, None, '__repce_version__') - select((inf,), (), ()) - repce.recv(inf) - # hack hack hack: store a global reference to the file - # to save it from getting GC'd which implies closing it - gconf.permanent_handles.append(inf) - self.fd_pair = (i, o) - return 'should' - - def rsync(self, files, log_err=False): - return sup(self, files, '-e', - " ".join(gconf.ssh_command.split() + - ["-p", str(gconf.ssh_port)] + - gconf.ssh_ctl_args), - *(gconf.rsync_ssh_options.split() + [self.slaveurl]), - log_err=log_err) - - def tarssh(self, files, log_err=False): - return sup(self, files, self.slaveurl, log_err=log_err) + def rsync(self, files, *args, **kw): + """invoke rsync""" + if not files: + raise GsyncdError("no files to sync") + logging.debug("files: " + ", ".join(files)) + + extra_rsync_flags = [] + # Performance flag, --ignore-missing-args, if rsync version is + # greater than 3.1.0 then include this flag. + if gconf.get("rsync-opt-ignore-missing-args") and \ + get_rsync_version(gconf.get("rsync-command")) >= "3.1.0": + extra_rsync_flags = ["--ignore-missing-args"] + + rsync_ssh_opts = [gconf.get("ssh-command")] + \ + gconf.get("ssh-options").split() + \ + ["-p", str(gconf.get("ssh-port"))] + \ + rconf.ssh_ctl_args + \ + gconf.get("rsync-ssh-options").split() + + argv = [ + gconf.get("rsync-command"), + '-aR0', + '--inplace', + '--files-from=-', + '--super', + '--stats', + '--numeric-ids', + '--no-implied-dirs' + ] + + if gconf.get("rsync-opt-existing"): + argv += ["--existing"] + + if gconf.get("sync-xattrs"): + argv += ['--xattrs'] + + if gconf.get("sync-acls"): + argv += ['--acls'] + + argv = argv + \ + gconf.get("rsync-options").split() + \ + extra_rsync_flags + ['.'] + \ + ["-e", " ".join(rsync_ssh_opts)] + \ + [self.slaveurl] + + log_rsync_performance = gconf.getr("log-rsync-performance", False) + + if log_rsync_performance: + # use stdout=PIPE only when log_rsync_performance enabled + # Else rsync will write to stdout and nobody is their + # to consume. If PIPE is full rsync hangs. + po = Popen(argv, stdin=subprocess.PIPE, stdout=subprocess.PIPE, + stderr=subprocess.PIPE) + else: + po = Popen(argv, stdin=subprocess.PIPE, stderr=subprocess.PIPE) + + for f in files: + po.stdin.write(f) + po.stdin.write('\0') + + stdout, stderr = po.communicate() + + if kw.get("log_err", False): + for errline in stderr.strip().split("\n")[:-1]: + logging.error(lf("SYNC Error", + sync_engine="Rsync", + error=errline)) + + if log_rsync_performance: + rsync_msg = [] + for line in stdout.split("\n"): + if line.startswith("Number of files:") or \ + line.startswith("Number of regular files transferred:") or \ + line.startswith("Total file size:") or \ + line.startswith("Total transferred file size:") or \ + line.startswith("Literal data:") or \ + line.startswith("Matched data:") or \ + line.startswith("Total bytes sent:") or \ + line.startswith("Total bytes received:") or \ + line.startswith("sent "): + rsync_msg.append(line) + logging.info(lf("rsync performance", + data=", ".join(rsync_msg))) + + return po + + def tarssh(self, files, slaveurl, log_err=False): + """invoke tar+ssh + -z (compress) can be use if needed, but omitting it now + as it results in weird error (tar+ssh errors out (errcode: 2) + """ + if not files: + raise GsyncdError("no files to sync") + logging.debug("files: " + ", ".join(files)) + (host, rdir) = slaveurl.split(':') + tar_cmd = ["tar"] + \ + ["--sparse", "-cf", "-", "--files-from", "-"] + ssh_cmd = gconf.get("ssh-command-tar").split() + \ + gconf.get("ssh-options-tar").split() + \ + ["-p", str(gconf.get("ssh-port"))] + \ + [host, "tar"] + \ + ["--overwrite", "-xf", "-", "-C", rdir] + p0 = Popen(tar_cmd, stdout=subprocess.PIPE, + stdin=subprocess.PIPE, stderr=subprocess.PIPE) + p1 = Popen(ssh_cmd, stdin=p0.stdout, stderr=subprocess.PIPE) + for f in files: + p0.stdin.write(f) + p0.stdin.write('\n') + + p0.stdin.close() + p0.stdout.close() # Allow p0 to receive a SIGPIPE if p1 exits. + # wait for tar to terminate, collecting any errors, further + # waiting for transfer to complete + _, stderr1 = p1.communicate() + + # stdin and stdout of p0 is already closed, Reset to None and + # wait for child process to complete + p0.stdin = None + p0.stdout = None + p0.communicate() + + if log_err: + for errline in stderr1.strip().split("\n")[:-1]: + logging.error(lf("SYNC Error", + sync_engine="Tarssh", + error=errline)) + + return p1 |