def doMigrate(self, intf=None):
if not self.exists:
raise FSError("filesystem has not been created")
if not self.migratable or not self.migrate:
return
if not os.path.exists(self.device):
raise FSError("device does not exist")
# if journal already exists skip
if isys.ext2HasJournal(self.device):
log.info("Skipping migration of %s, has a journal already." %
self.device)
return
argv = self._defaultMigrateOptions[:]
argv.append(self.device)
try:
rc = iutil.execWithRedirect(self.migratefsProg,
argv,
stdout="/dev/tty5",
stderr="/dev/tty5")
except Exception as e:
raise FSMigrateError("filesystem migration failed: %s" % e,
self.device)
if rc:
raise FSMigrateError("filesystem migration failed: %s" % rc,
self.device)
# the other option is to actually replace this instance with an
# instance of the new filesystem type.
self._type = self.migrationTarget
def doMigrate(self, intf=None):
if not self.exists:
raise FSError("filesystem has not been created")
if not self.migratable or not self.migrate:
return
if not os.path.exists(self.device):
raise FSError("device does not exist")
# if journal already exists skip
if isys.ext2HasJournal(self.device):
log.info("Skipping migration of %s, has a journal already."
% self.device)
return
argv = self._defaultMigrateOptions[:]
argv.append(self.device)
try:
rc = iutil.execWithRedirect(self.migratefsProg,
argv,
stdout = "/dev/tty5",
stderr = "/dev/tty5")
except Exception as e:
raise FSMigrateError("filesystem migration failed: %s" % e,
self.device)
if rc:
raise FSMigrateError("filesystem migration failed: %s" % rc,
self.device)
# the other option is to actually replace this instance with an
# instance of the new filesystem type.
self._type = self.migrationTarget
self._mountType = self.migrationTarget
def tuneFS(self):
if not isys.ext2HasJournal(self.device):
# only do this if there's a journal
return
try:
rc = iutil.execWithRedirect(
"tune2fs", ["-c0", "-i0", "-ouser_xattr,acl", self.device],
stdout="/dev/tty5",
stderr="/dev/tty5")
except Exception as e:
log.error("failed to run tune2fs on %s: %s" % (self.device, e))
def tuneFS(self):
if not isys.ext2HasJournal(self.device):
# only do this if there's a journal
return
try:
rc = iutil.execWithRedirect("tune2fs",
["-c0", "-i0",
"-ouser_xattr,acl", self.device],
stdout = "/dev/tty5",
stderr = "/dev/tty5")
except Exception as e:
log.error("failed to run tune2fs on %s: %s" % (self.device, e))
def sniffFilesystemType(device):
"""Sniff to determine the type of fs on device.
device - name of device to sniff. we try to create it if it doesn't exist.
"""
if os.access(device, os.O_RDONLY):
dev = device
else:
dev = "/tmp/" + device
if not os.access(dev, os.O_RDONLY):
try:
isys.makeDevInode(device, dev)
except:
pass
pagesize = isys.getpagesize()
if pagesize > 2048:
num = pagesize
else:
num = 2048
try:
fd = os.open(dev, os.O_RDONLY)
buf = os.read(fd, num)
os.close(fd)
except:
return None
if len(buf) < pagesize:
try:
log("Tried to read pagesize for %s in sniffFilesystemType and only read %s", dev, len(buf))
except:
pass
return None
# ext2 check
if struct.unpack("<H", buf[1080:1082]) == (0xef53,):
if isys.ext2HasJournal(dev, makeDevNode = 0):
return "ext3"
else:
return "ext2"
# physical volumes start with HM (see linux/lvm.h
# and LVM/ver/tools/lib/pv_copy.c)
if buf.startswith("HM"):
return "physical volume (LVM)"
# xfs signature
if buf.startswith("XFSB"):
return "xfs"
if (buf[pagesize - 10:] == "SWAP-SPACE" or
buf[pagesize - 10:] == "SWAPSPACE2"):
return "swap"
try:
isys.raidsbFromDevice(dev)
return "software RAID"
except:
pass
if fsset.isValidReiserFS(dev):
return "reiserfs"
if fsset.isValidJFS(dev):
return "jfs"
# FIXME: we don't look for vfat
return None
