def setSize(path, size, confirm):
sizeMB = size / (1024 * 1024)
cmd = [CMD_LVRESIZE, "-L", str(sizeMB), path]
if confirm:
util.pread3(cmd, "y\n")
else:
util.pread(cmd)
def _probe_hba(self):
try:
# use sysfs tree to gather FC data
dom = xml.dom.minidom.Document()
hbalist = dom.createElement("HBAInfoList")
dom.appendChild(hbalist)
hostlist = util.listdir("/sys/class/fc_host")
for host in hostlist:
hbainfo = dom.createElement("HBAInfo")
hbalist.appendChild(hbainfo)
cmd = ["cat", "/sys/class/fc_host/%s/symbolic_name" % host]
sname = util.pread(cmd)[:-1]
entry = dom.createElement("model")
hbainfo.appendChild(entry)
textnode = dom.createTextNode(sname)
entry.appendChild(textnode)
cmd = ["cat", "/sys/class/fc_host/%s/node_name" % host]
nname = util.pread(cmd)[:-1]
nname = util.make_WWN(nname)
entry = dom.createElement("nodeWWN")
hbainfo.appendChild(entry)
# adjust nodename to look like expected string
textnode = dom.createTextNode(nname)
entry.appendChild(textnode)
port = dom.createElement("Port")
hbainfo.appendChild(port)
cmd = ["cat", "/sys/class/fc_host/%s/port_name" % host]
pname = util.pread(cmd)[:-1]
pname = util.make_WWN(pname)
entry = dom.createElement("portWWN")
port.appendChild(entry)
# adjust nodename to look like expected string
textnode = dom.createTextNode(pname)
entry.appendChild(textnode)
cmd = ["cat", "/sys/class/fc_host/%s/port_state" % host]
state = util.pread(cmd)[:-1]
entry = dom.createElement("state")
port.appendChild(entry)
# adjust nodename to look like expected string
textnode = dom.createTextNode(state)
entry.appendChild(textnode)
entry = dom.createElement("deviceName")
port.appendChild(entry)
# adjust nodename to look like expected string
textnode = dom.createTextNode("/sys/class/scsi_host/%s" % host)
entry.appendChild(textnode)
return dom.toxml()
except:
raise xs_errors.XenError('CSLGXMLParse', \
opterr='HBA probe failed')
def detach(self, sr_uuid):
if not util.ioretry(lambda: self._checkmount()):
return
try:
util.pread(["umount", self.path])
os.rmdir(self.path)
except util.CommandException, inst:
raise xs_errors.XenError('NFSUnMount', \
opterr='error is %d' % inst.code)
def detach(self, sr_uuid):
if self._checkmount():
try:
util.SMlog("Aborting GC/coalesce")
cleanup.abort(self.uuid)
os.chdir(SR.MOUNT_BASE)
util.pread(["umount", self.path])
os.rmdir(self.path)
except Exception, e:
raise xs_errors.XenError('SRInUse', opterr=str(e))
def attach(self, sr_uuid):
if not self._checkmount():
try:
util.ioretry(lambda: util.makedirs(self.path))
except util.CommandException, inst:
if inst.code != errno.EEXIST:
raise xs_errors.XenError("FileSRCreate", \
opterr='fail to create mount point. Errno is %s' % inst.code)
try:
util.pread(["mount", "--bind", self.remotepath, self.path])
except util.CommandException, inst:
raise xs_errors.XenError('FileSRCreate', \
opterr='fail to mount FileSR. Errno is %s' % inst.code)
def _lvmBugCleanup(path):
# the device should not exist at this point. If it does, this was an LVM
# bug, and we manually clean up after LVM here
mapperDevice = path[5:].replace("-", "--").replace("/", "-")
mapperPath = "/dev/mapper/" + mapperDevice
nodeExists = False
cmd = [CMD_DMSETUP, "status", mapperDevice]
try:
util.pread(cmd, expect_rc=1)
except util.CommandException, e:
if e.code == 0:
nodeExists = True
def check_server_service(server):
"""Ensure NFS service is up and available on the remote server.
Returns False if fails to detect service after
NFS_SERVICE_RETRY * NFS_SERVICE_WAIT
"""
retries = 0
errlist = [errno.EPERM, errno.EPIPE, errno.EIO]
while True:
try:
services = util.pread([RPCINFO_BIN, "-s", "%s" % server])
services = services.split("\n")
for i in range(len(services)):
if services[i].find("nfs") > 0:
return True
except util.CommandException, inst:
if not int(inst.code) in errlist:
raise
util.SMlog("NFS service not ready on server %s" % server)
retries += 1
if retries >= NFS_SERVICE_RETRY:
break
time.sleep(NFS_SERVICE_WAIT)
def removeDevMapperEntry(path, strict=True):
try:
# remove devmapper entry using dmsetup
cmd = [CMD_DMSETUP, "remove", path]
util.pread2(cmd)
return True
except Exception, e:
if not strict:
cmd = [CMD_DMSETUP, "status", path]
try:
util.pread(cmd, expect_rc=1)
return True
except:
pass # Continuining will fail and log the right way
util.SMlog("removeDevMapperEntry: dmsetup remove failed for file %s " \
"with error %s." % (path, str(e)))
return False
def create(self, sr_uuid, size):
if util.pathexists(self.blockdevice):
util.zeroOut(self.blockdevice, 0, 1024 * 1024)
cmd = ["mkfs", "-t", "ocfs2", "-b", "4K", "-C", "1M", "-N", "16", "-F", self.blockdevice]
try:
ret = util.pread(cmd)
except util.CommandException, inst:
raise xs_errors.XenError("OCFSFilesystem", opterr="mkfs failed error %d" % os.strerror(inst.code))
def create(self, sr_uuid, size):
if util.pathexists(self.blockdevice):
util.zeroOut(self.blockdevice, 0, 1024*1024)
cmd = ['mkfs', '-t', 'ocfs2', '-b', '4K', '-C', '1M', '-N', '16', '-F', self.blockdevice ]
try:
ret = util.pread(cmd)
except util.CommandException, inst:
raise xs_errors.XenError('OCFSFilesystem', \
opterr='mkfs failed error %d' % os.strerror(inst.code))
def _probe_hba(self):
try:
cmd = [HBA_CLI, "xml"]
fc_xml = util.pread(cmd)
#strip junk until xml
return fc_xml[fc_xml.index("<HBAInfoList>"):len(fc_xml)]
except:
raise xs_errors.XenError('CSLGXMLParse', \
opterr='HBA probe failed')
def _query_info(self, path):
diskinfo = {}
cmd = [SR.TAPDISK_UTIL, "query", SR.DEFAULT_TAP, "-vpf", path]
txt = util.pread(cmd).split('\n')
diskinfo['size'] = txt[0]
for val in filter(util.exactmatch_uuid, [txt[1].split('/')[-1].replace(".%s" % SR.DEFAULT_TAP,"")]):
diskinfo['parent'] = val
diskinfo['hidden'] = txt[2].split()[1]
return diskinfo
def _query_info(self, path):
diskinfo = {}
cmd = [SR.TAPDISK_UTIL, "query", SR.DEFAULT_TAP, "-vpf", path]
txt = util.pread(cmd).split('\n')
diskinfo['size'] = txt[0]
if txt[1].find("has no parent") == -1:
diskinfo['parent'] = txt[1].split('/')[-1].replace(".%s" % SR.DEFAULT_TAP,"")
diskinfo['hidden'] = txt[2].split()[1]
return diskinfo
def create(self, sr_uuid, size):
if self._checkmount():
raise xs_errors.XenError('SRExists')
# Check none of the devices already in use by other PBDs
if util.test_hostPBD_devs(self.session, sr_uuid, self.root):
raise xs_errors.XenError('SRInUse')
# Check serial number entry in SR records
for dev in self.root.split(','):
if util.test_scsiserial(self.session, dev):
raise xs_errors.XenError('SRInUse')
if not lvutil._checkVG(self.vgname):
lvutil.createVG(self.root, self.vgname)
if lvutil._checkLV(self.remotepath):
raise xs_errors.XenError('SRExists')
try:
numdevs = len(self.root.split(','))
cmd = ["lvcreate", "-n", sr_uuid]
if numdevs > 1:
lowest = -1
for dev in self.root.split(','):
stats = lvutil._getPVstats(dev)
if lowest < 0 or stats['freespace'] < lowest:
lowest = stats['freespace']
size_mb = (lowest / (1024 * 1024)) * numdevs
# Add stripe parameter to command
cmd += ["-i", str(numdevs), "-I", "2048"]
else:
stats = lvutil._getVGstats(self.vgname)
size_mb = stats['freespace'] / (1024 * 1024)
assert(size_mb > 0)
cmd += ["-L", str(size_mb), self.vgname]
text = util.pread(cmd)
cmd = ["lvchange", "-ay", self.remotepath]
text = util.pread(cmd)
except util.CommandException, inst:
raise xs_errors.XenError('LVMCreate', \
opterr='lv operation, error %d' % inst.code)
def check_server_tcp(server):
"""Make sure that NFS over TCP/IP V3 is supported on the server.
Returns True if everything is OK, False otherwise."""
try:
util.ioretry(lambda: util.pread([RPCINFO_BIN,"-t",
"%s" % server, "nfs","3"]),
errlist=[errno.EPERM], maxretry=2, nofail=True)
except util.CommandException, inst:
raise NfsException("rpcinfo failed or timed out: return code %d" %
inst.code)
def _query_info(self, path):
diskinfo = {}
cmd = [SR.TAPDISK_UTIL, "query", vhdutil.VDI_TYPE_VHD, "-vpf", path]
txt = util.pread(cmd).split('\n')
diskinfo['size'] = txt[0]
lst = [txt[1].split('/')[-1].replace(vhdutil.FILE_EXTN_VHD, "")]
for val in filter(util.exactmatch_uuid, lst):
diskinfo['parent'] = val
diskinfo['hidden'] = txt[2].split()[1]
return diskinfo
def check_server_service(server):
"""Ensure NFS service is up and available on the remote server.
Raises exception if fails to detect service after
NFS_SERVICE_RETRY * NFS_SERVICE_WAIT
"""
util.ioretry(lambda:
util.pread([RPCINFO_BIN, "-t", "%s" % server, "nfs"]),
errlist=[errno.EPERM, errno.EPIPE, errno.EIO],
maxretry=NFS_SERVICE_RETRY,
period=NFS_SERVICE_WAIT, nofail=True)
def activateNoRefcount(path, refresh):
cmd = [CMD_LVCHANGE, "-ay", path]
if refresh:
cmd.append("--refresh")
text = util.pread2(cmd)
if not _checkActive(path):
raise util.CommandException(-1, str(cmd), "LV not activated")
if refresh:
mapperDevice = path[5:].replace("-", "--").replace("/", "-")
cmd = [CMD_DMSETUP, "table", mapperDevice]
ret = util.pread(cmd)
util.SMlog("DM table for %s: %s" % (path, ret.strip()))
def _getVHDParentNoCheck(path):
cmd = [VHD_UTIL, "read", "-p", "-n", "%s" % path]
text = util.pread(cmd)
util.SMlog(text)
for line in text.split('\n'):
if line.find("decoded name :") != -1:
val = line.split(':')[1].strip()
vdi = val.replace("--", "-")[-40:]
if vdi[1:].startswith("LV-"):
vdi = vdi[1:]
return vdi
return None
def _query_info(self, path, use_bkp_footer=False):
diskinfo = {}
qopts = '-vpf'
if use_bkp_footer:
qopts += 'b'
cmd = [SR.TAPDISK_UTIL, "query", vhdutil.VDI_TYPE_VHD, qopts, path]
txt = util.pread(cmd).split('\n')
diskinfo['size'] = txt[0]
lst = [txt[1].split('/')[-1].replace(vhdutil.FILE_EXTN_VHD, "")]
for val in filter(util.exactmatch_uuid, lst):
diskinfo['parent'] = val
diskinfo['hidden'] = txt[2].split()[1]
return diskinfo
def _query_info(self, path, use_bkp_footer=False):
diskinfo = {}
qopts = "-vpf"
if use_bkp_footer:
qopts += "b"
cmd = [SR.TAPDISK_UTIL, "query", vhdutil.VDI_TYPE_VHD, qopts, path]
txt = util.pread(cmd).split("\n")
diskinfo["size"] = txt[0]
lst = [txt[1].split("/")[-1].replace(vhdutil.FILE_EXTN_VHD, "")]
for val in filter(util.exactmatch_uuid, lst):
diskinfo["parent"] = val
diskinfo["hidden"] = txt[2].split()[1]
return diskinfo
def attach(self, sr_uuid):
if not self._checkmount():
try:
#Activate LV
cmd = ['lvchange','-ay',self.remotepath]
util.pread2(cmd)
# make a mountpoint:
if not os.path.isdir(self.path):
os.makedirs(self.path)
except util.CommandException, inst:
raise xs_errors.XenError('LVMMount', \
opterr='Unable to activate LV. Errno is %d' % inst.code)
try:
util.pread(["fsck", "-a", self.remotepath])
except util.CommandException, inst:
if inst.code == 1:
util.SMlog("FSCK detected and corrected FS errors. Not fatal.")
else:
raise xs_errors.XenError('LVMMount', \
opterr='FSCK failed on %s. Errno is %d' % (self.remotepath,inst.code))
def detach(self, sr_uuid):
if not self._checkmount():
return
cleanup.abort(self.uuid)
try:
# Change directory to avoid unmount conflicts
os.chdir(SR.MOUNT_BASE)
# unmount the device
util.pread(["umount", self.path])
# remove the mountpoint
os.rmdir(self.path)
self.path = None
# deactivate SR
try:
cmd = ["lvchange", "-an", self.remotepath]
util.pread2(cmd)
except util.CommandException, inst:
raise xs_errors.XenError('LVMUnMount', \
opterr='lvm -an failed errno is %d' % inst.code)
self.attached = False
def detach(self, sr_uuid):
"""Detach the SR: Unmounts and removes the mountpoint"""
if not self._checkmount():
return
util.SMlog("Aborting GC/coalesce")
cleanup.abort(self.uuid)
# Change directory to avoid unmount conflicts
os.chdir(SR.MOUNT_BASE)
cmd = ["umount", self.path]
try:
ret = util.pread(cmd)
except util.CommandException, inst:
raise xs_errors.XenError("OCFSUnMount", opterr="Failed to umount FS. Errno is %d" % os.strerror(inst.code))
def activateNoRefcount(path, refresh):
cmd = [CMD_LVCHANGE, "-ay", path]
text = cmd_lvm(cmd)
if not _checkActive(path):
raise util.CommandException(-1, str(cmd), "LV not activated")
if refresh:
# Override slave mode lvm.conf for this command
os.environ['LVM_SYSTEM_DIR'] = MASTER_LVM_CONF
text = cmd_lvm([CMD_LVCHANGE, "--refresh", path])
mapperDevice = path[5:].replace("-", "--").replace("/", "-")
cmd = [CMD_DMSETUP, "table", mapperDevice]
ret = util.pread(cmd)
util.SMlog("DM table for %s: %s" % (path, ret.strip()))
# Restore slave mode lvm.conf
os.environ['LVM_SYSTEM_DIR'] = DEF_LVM_CONF
def attach(self, sr_uuid):
if not util.ioretry(lambda: self._checkmount()):
try:
# make sure NFS over TCP/IP V3 is supported on the server
util.ioretry(lambda: util.pread(["/usr/sbin/rpcinfo","-t", \
"%s" % self.remoteserver, "nfs","3"]), \
errlist=[errno.EPERM], nofail=1)
except util.CommandException, inst:
raise xs_errors.XenError('NFSVersion', \
opterr='or NFS server timed out')
try:
# make a mountpoint:
if not util.ioretry(lambda: util.isdir(self.path)):
util.ioretry(lambda: util.makedirs(self.path))
timeout = int((SOFTMOUNT_TIMEOUT / 3.0) * 10.0)
util.ioretry(lambda: util.pread(["mount.nfs", "%s:%s" \
% (self.remoteserver, self.remotepath), \
self.path, "-o", \
"udp,soft,timeo=%d,retrans=1,noac" % \
timeout]), errlist=[errno.EPIPE, errno.EIO],
nofail=1)
except util.CommandException, inst:
raise xs_errors.XenError('NFSMount')
def _getPVstats(dev):
try:
cmd = [CMD_PVS, "--noheadings", "--nosuffix", "--units", "b", dev]
text = util.pread(cmd).split()
size = long(text[4])
freespace = long(text[5])
utilisation = size - freespace
stats = {}
stats['physical_size'] = size
stats['physical_utilisation'] = utilisation
stats['freespace'] = freespace
return stats
except util.CommandException, inst:
raise xs_errors.XenError('VDILoad', \
opterr='pvstats failed error is %d' % inst.code)
def _getVGstats(vgname):
try:
cmd = [CMD_VGS, "--noheadings", "--units", "b", vgname]
text = util.pread(cmd).split()
size = long(text[5].replace("B",""))
utilisation = size - long(text[6].replace("B",""))
freespace = size - utilisation
stats = {}
stats['physical_size'] = size
stats['physical_utilisation'] = utilisation
stats['freespace'] = freespace
return stats
except util.CommandException, inst:
raise xs_errors.XenError('VDILoad', \
opterr='rvgstats failed error is %d' % inst.code)
def mount(self, mountpoint, blockdevice):
try:
if not util.ioretry(lambda: util.isdir(mountpoint)):
util.ioretry(lambda: util.makedirs(mountpoint))
except util.CommandException:
raise xs_errors.XenError('SRUnavailable', \
opterr='no such directory %s' % mountpoint)
cmd = ['mount', '-t', 'ocfs2', blockdevice, mountpoint, '-o', \
'noatime,data=writeback,nointr,commit=60,coherency=buffered']
try:
ret = util.pread(cmd)
except util.CommandException, inst:
raise xs_errors.XenError('OCFSMount',
opterr='Failed to mount FS. Errno is %d' \
% os.strerror(inst.code))
def mount(self, mountpoint, blockdevice):
try:
if not util.ioretry(lambda: util.isdir(mountpoint)):
util.ioretry(lambda: util.makedirs(mountpoint))
except util.CommandException:
raise xs_errors.XenError("SRUnavailable", opterr="no such directory %s" % mountpoint)
cmd = [
"mount",
"-t",
"ocfs2",
blockdevice,
mountpoint,
"-o",
"noatime,data=writeback,nointr,commit=60,coherency=buffered",
]
try:
ret = util.pread(cmd)
except util.CommandException, inst:
raise xs_errors.XenError("OCFSMount", opterr="Failed to mount FS. Errno is %d" % os.strerror(inst.code))
def soft_mount(mountpoint, remoteserver, remotepath, transport):
"""Mount the remote NFS export at 'mountpoint'"""
try:
if not util.ioretry(lambda: util.isdir(mountpoint)):
util.ioretry(lambda: util.makedirs(mountpoint))
except util.CommandException, inst:
raise NfsException("Failed to make directory: code is %d" % inst.code)
options = "soft,timeo=%d,retrans=%d,%s" % (SOFTMOUNT_TIMEOUT,
SOFTMOUNT_RETRANS, transport)
options += ',noac' # CA-27534
try:
util.ioretry(lambda: util.pread([
"mount.nfs",
"%s:%s" % (remoteserver, remotepath), mountpoint, "-o", options
]),
errlist=[errno.EPIPE, errno.EIO],
maxretry=2,
nofail=True)
except util.CommandException, inst:
raise NfsException("mount failed with return code %d" % inst.code)
def unmount(mountpoint, rmmountpoint):
"""Unmount the mounted mountpoint"""
try:
util.pread(["umount", mountpoint])
except util.CommandException, inst:
raise NfsException("umount failed with return code %d" % inst.code)
def unmount(self, mountpoint, rmmountpoint):
"""Unmount the remote SMB export at 'mountpoint'"""
try:
util.pread(["umount", mountpoint])
except util.CommandException, inst:
raise SMBException("umount failed with return code %d" % inst.code)
def _create(self, size, path):
cmd = [SR.TAPDISK_UTIL, "create", vhdutil.VDI_TYPE_VHD, size, path]
text = util.pread(cmd)
def _singlesnap(self, src, dst):
cmd = [SR.TAPDISK_UTIL, "snapshot", SR.DEFAULT_TAP, src, dst]
text = util.pread(cmd)
def _query_p_uuid(self, path):
cmd = [SR.TAPDISK_UTIL, "query", SR.DEFAULT_TAP, "-p", path]
parent = util.pread(cmd)
parent = parent[:-1]
ls = parent.split('/')
return ls[len(ls) - 1].replace(SR.DEFAULT_TAP, '')[:-1]
def unmount(mountpoint, rmmountpoint):
"""Unmount the mounted mountpoint"""
try:
util.pread(["umount", mountpoint])
except util.CommandException, inst:
raise NfsException("umount failed with return code %d" % inst.code)
raise NfsException("Failed to make directory: code is %d" % inst.code)
mountcommand = 'mount.nfs'
if nfsversion == '4':
mountcommand = 'mount.nfs4'
if timeout < 1:
timeout = SOFTMOUNT_TIMEOUT
options = "soft,timeo=%d,retrans=%d,proto=%s,vers=%s" % (
timeout * 10, SOFTMOUNT_RETRANS, transport, nfsversion)
options += ',acdirmin=0,acdirmax=0'
try:
util.ioretry(lambda: util.pread([
mountcommand,
"%s:%s" % (remoteserver, remotepath), mountpoint, "-o", options
]),
errlist=[errno.EPIPE, errno.EIO],
maxretry=2,
nofail=True)
except util.CommandException, inst:
raise NfsException("mount failed with return code %d" % inst.code)
def unmount(mountpoint, rmmountpoint):
"""Unmount the mounted mountpoint"""
try:
util.pread(["umount", mountpoint])
except util.CommandException, inst:
raise NfsException("umount failed with return code %d" % inst.code)
def _query_v(self, path):
cmd = [SR.TAPDISK_UTIL, "query", vhdutil.VDI_TYPE_VHD, "-v", path]
return long(util.pread(cmd)) * 1024 * 1024
def _query_p_uuid(self, path):
cmd = [SR.TAPDISK_UTIL, "query", vhdutil.VDI_TYPE_VHD, "-p", path]
parent = util.pread(cmd)
parent = parent[:-1]
ls = parent.split('/')
return ls[len(ls) - 1].replace(vhdutil.FILE_EXTN_VHD, '')
def _mark_hidden(self, path):
cmd = [SR.TAPDISK_UTIL, "set", SR.DEFAULT_TAP, path, "hidden", "1"]
text = util.pread(cmd)
self.hidden = 1
return
util.SMlog("_lvmBugCleanup: seeing dm file %s" % mapperPath)
# destroy the dm device
if nodeExists:
util.SMlog("_lvmBugCleanup: removing dm device %s" % mapperDevice)
for i in range(LVM_FAIL_RETRIES):
try:
util.pread2(cmd_rm)
break
except util.CommandException, e:
if i < LVM_FAIL_RETRIES - 1:
util.SMlog("Failed on try %d, retrying" % i)
try:
util.pread(cmd_st, expect_rc=1)
util.SMlog("_lvmBugCleanup: dm device {}"
" removed".format(mapperDevice))
break
except:
cmd_rm = cmd_rf
time.sleep(1)
else:
# make sure the symlink is still there for consistency
if not os.path.lexists(path):
os.symlink(mapperPath, path)
util.SMlog("_lvmBugCleanup: restored symlink %s" %
path)
raise e
if util.pathexists(mapperPath):
def _create(self, size, path):
cmd = [SR.TAPDISK_UTIL, "create", SR.DEFAULT_TAP, size, path]
text = util.pread(cmd)
except util.CommandException, inst:
raise xs_errors.XenError('LVMMount', \
opterr='Unable to activate LV. Errno is %d' % inst.code)
try:
util.pread(["fsck", "-a", self.remotepath])
except util.CommandException, inst:
if inst.code == 1:
util.SMlog(
"FSCK detected and corrected FS errors. Not fatal.")
else:
raise xs_errors.XenError('LVMMount', \
opterr='FSCK failed on %s. Errno is %d' % (self.remotepath,inst.code))
try:
util.pread(["mount", self.remotepath, self.path])
except util.CommandException, inst:
raise xs_errors.XenError('LVMMount', \
opterr='Failed to mount FS. Errno is %d' % inst.code)
self.attached = True
#Update SCSIid string
scsiutil.add_serial_record(self.session, self.sr_ref, \
scsiutil.devlist_to_serialstring(self.root.split(',')))
# Set the block scheduler
for dev in self.root.split(','):
self.block_setscheduler(dev)
def detach(self, sr_uuid):
def _query_v(self, path):
cmd = [SR.TAPDISK_UTIL, "query", SR.DEFAULT_TAP, "-v", path]
return long(util.pread(cmd)) * 1024 * 1024
def _snap(self, child, parent):
cmd = [
SR.TAPDISK_UTIL, "snapshot", vhdutil.VDI_TYPE_VHD, child, parent
]
text = util.pread(cmd)
def unmount(self, mountpoint, rmmountpoint):
try:
util.pread(["umount", mountpoint])
except util.CommandException, inst:
raise GlusterFSException("umount failed with return code %d" %
inst.code)
util.SMlog("_lvmBugCleanup: seeing dm file %s" % mapperPath)
# destroy the dm device
if nodeExists:
util.SMlog("_lvmBugCleanup: removing dm device %s" % mapperDevice)
cmd = [CMD_DMSETUP, "remove", mapperDevice]
for i in range(LVM_FAIL_RETRIES):
try:
util.pread2(cmd)
break
except util.CommandException, e:
if i < LVM_FAIL_RETRIES - 1:
util.SMlog("Failed on try %d, retrying" % i)
cmd = [CMD_DMSETUP, "status", mapperDevice]
try:
util.pread(cmd, expect_rc=1)
util.SMlog("_lvmBugCleanup: dm device {}"
" removed".format(mapperDevice)
)
break
except:
time.sleep(1)
else:
# make sure the symlink is still there for consistency
if not os.path.lexists(path):
os.symlink(mapperPath, path)
util.SMlog("_lvmBugCleanup: restored symlink %s" % path)
raise e
if util.pathexists(mapperPath):
os.unlink(mapperPath)
def _dualsnap(self, src, dst, newsrc):
cmd = [SR.TAPDISK_UTIL, "snapshot", SR.DEFAULT_TAP, src, newsrc]
text = util.pread(cmd)
cmd = [SR.TAPDISK_UTIL, "snapshot", SR.DEFAULT_TAP, dst, newsrc]
text = util.pread(cmd)
def setReadonly(path, readonly):
val = "r"
if not readonly:
val += "w"
cmd = [CMD_LVCHANGE, path, "-p", val]
ret = util.pread(cmd)
class SMBSR(FileSR.FileSR):
"""SMB file-based storage repository"""
def handles(type):
return type == 'smb'
handles = staticmethod(handles)
def load(self, sr_uuid):
self.ops_exclusive = FileSR.OPS_EXCLUSIVE
self.lock = Lock(vhdutil.LOCK_TYPE_SR, self.uuid)
self.sr_vditype = SR.DEFAULT_TAP
self.driver_config = DRIVER_CONFIG
if not self.dconf.has_key('server'):
raise xs_errors.XenError('ConfigServerMissing')
self.remoteserver = self.dconf['server']
if self.sr_ref and self.session is not None :
self.sm_config = self.session.xenapi.SR.get_sm_config(self.sr_ref)
else:
self.sm_config = self.srcmd.params.get('sr_sm_config') or {}
self.credentials = None
self.mountpoint = os.path.join(SR.MOUNT_BASE, 'SMB', self.__extract_server(), sr_uuid)
self.linkpath = os.path.join(self.mountpoint,
sr_uuid or "")
# Remotepath is the absolute path inside a share that is to be mounted
# For a SMB SR, only the root can be mounted.
self.remotepath = ''
self.path = os.path.join(SR.MOUNT_BASE, sr_uuid)
self._check_o_direct()
def checkmount(self):
return util.ioretry(lambda: ((util.pathexists(self.mountpoint) and \
util.ismount(self.mountpoint)) and \
util.pathexists(self.linkpath)))
def mount(self, mountpoint=None):
"""Mount the remote SMB export at 'mountpoint'"""
if mountpoint == None:
mountpoint = self.mountpoint
elif not util.is_string(mountpoint) or mountpoint == "":
raise SMBException("mountpoint not a string object")
try:
if not util.ioretry(lambda: util.isdir(mountpoint)):
util.ioretry(lambda: util.makedirs(mountpoint))
except util.CommandException, inst:
raise SMBException("Failed to make directory: code is %d" %
inst.code)
self.credentials = os.path.join("/tmp", util.gen_uuid())
options = self.getMountOptions()
if options:
options = ",".join(str(x) for x in options if x)
try:
util.ioretry(lambda:
util.pread(["mount.cifs", self.remoteserver,
mountpoint, "-o", options]),
errlist=[errno.EPIPE, errno.EIO],
maxretry=2, nofail=True)
except util.CommandException, inst:
raise SMBException("mount failed with return code %d" % inst.code)
def unblockIP(ip):
try:
cmd = ['iptables', '-D', 'INPUT', '-s', ip, '-j', 'DROP']
util.pread(cmd)
except Exception, e:
XenCertPrint("There was an exception in unblocking ip: %s. Exception: %s" % (ip, str(e)))
os.makedirs(self.path)
except util.CommandException, inst:
raise xs_errors.XenError('LVMMount', \
opterr='Unable to activate LV. Errno is %d' % inst.code)
try:
util.pread(["fsck", "-a", self.remotepath])
except util.CommandException, inst:
if inst.code == 1:
util.SMlog("FSCK detected and corrected FS errors. Not fatal.")
else:
raise xs_errors.XenError('LVMMount', \
opterr='FSCK failed on %s. Errno is %d' % (self.remotepath,inst.code))
try:
util.pread(["mount", self.remotepath, self.path])
FileSR.FileSR.attach(self, sr_uuid)
self.attached = True
except util.CommandException, inst:
raise xs_errors.XenError('LVMMount', \
opterr='Failed to mount FS. Errno is %d' % inst.code)
#Update SCSIid string
scsiutil.add_serial_record(self.session, self.sr_ref, \
scsiutil.devlist_to_serialstring(self.root.split(',')))
# Set the block scheduler
for dev in self.root.split(','): self.block_setscheduler(dev)
def detach(self, sr_uuid):
class GlusterFSSR(FileSR.FileSR):
"""Gluster file-based storage repository"""
def handles(sr_type):
# fudge, because the parent class (FileSR) checks for smb to alter its behavior
return sr_type == 'glusterfs' or sr_type == 'smb'
handles = staticmethod(handles)
def load(self, sr_uuid):
self.ops_exclusive = FileSR.OPS_EXCLUSIVE
self.lock = Lock(vhdutil.LOCK_TYPE_SR, self.uuid)
self.sr_vditype = SR.DEFAULT_TAP
self.driver_config = DRIVER_CONFIG
if 'server' not in self.dconf:
raise xs_errors.XenError('ConfigServerMissing')
self.remoteserver = self.dconf['server']
if self.sr_ref and self.session is not None:
self.sm_config = self.session.xenapi.SR.get_sm_config(self.sr_ref)
else:
self.sm_config = self.srcmd.params.get('sr_sm_config') or {}
self.mountpoint = os.path.join(SR.MOUNT_BASE, 'GlusterFS',
self.remoteserver.split(':')[0],
sr_uuid)
self.linkpath = os.path.join(self.mountpoint, sr_uuid or "")
self.path = os.path.join(SR.MOUNT_BASE, sr_uuid)
self._check_o_direct()
def checkmount(self):
return util.ioretry(
lambda: ((util.pathexists(self.mountpoint) and util.ismount(
self.mountpoint)) and util.pathexists(self.linkpath)))
def mount(self, mountpoint=None):
"""Mount the remote gluster export at 'mountpoint'"""
if mountpoint is None:
mountpoint = self.mountpoint
elif not util.is_string(mountpoint) or mountpoint == "":
raise GlusterFSException("mountpoint not a string object")
try:
if not util.ioretry(lambda: util.isdir(mountpoint)):
util.ioretry(lambda: util.makedirs(mountpoint))
except util.CommandException, inst:
raise GlusterFSException("Failed to make directory: code is %d" %
inst.code)
try:
options = []
if 'backupservers' in self.dconf:
options.append('backup-volfile-servers=' +
self.dconf['backupservers'])
if 'fetchattempts' in self.dconf:
options.append('fetch-attempts=' + self.dconf['fetchattempts'])
if options:
options = ['-o', ','.join(options)]
command = [
"mount", '-t', 'glusterfs', self.remoteserver, mountpoint
] + options
util.ioretry(lambda: util.pread(command),
errlist=[errno.EPIPE, errno.EIO],
maxretry=2,
nofail=True)
except util.CommandException, inst:
syslog(_syslog.LOG_ERR, 'GlusterFS mount failed ' + inst.__str__())
raise GlusterFSException("mount failed with return code %d" %
inst.code)
def _create(self, size, path):
cmd = [SR.TAPDISK_UTIL, "create", vhdutil.VDI_TYPE_VHD, size, path]
text = util.pread(cmd)
if self.key_hash:
vhdutil.setKey(path, self.key_hash)
def rename(path, newName):
cmd = [CMD_LVRENAME, path, newName]
util.pread(cmd)