async def statfs(self, ctx):
"""Get file system statistics
*ctx* will be a `RequestContext` instance.
The method must return an appropriately filled `StatvfsData` instance.
See https://linux.die.net/man/2/statvfs
and https://github.com/libfuse/pyfuse3/blob/1730558574361bf7b05b1be2a228a0443deca088/examples/tmpfs.py#L323
"""
stats = pyfuse3.StatvfsData()
stats.f_bsize = 512
stats.f_frsize = 512
size_sum = 0
for inodes in self.data.nodes:
size_sum += self.data.nodes[inodes].size
stats.f_blocks = size_sum // stats.f_frsize
stats.f_bfree = max(size_sum // stats.f_frsize, 1024)
stats.f_bavail = stats.f_bfree
count = len(self.data.nodes)
stats.f_files = count
stats.f_ffree = max(count, 200)
stats.f_favail = stats.f_ffree
# Filemanagers need maximum file name length to create dir or file.
stats.f_namemax = 100
return stats
async def statfs(self, ctx: pyfuse3.RequestContext):
(success, response) = api.get('statFilesystem')
if not success:
raise FUSEError(errno.EREMOTEIO)
stat_ = pyfuse3.StatvfsData()
# stat_.f_bsize = config.CHUNKSIZE
# stat_.f_frsize = config.CHUNKSIZE
stat_.f_bsize = 1_000_000
stat_.f_frsize = 1_000_000
used_blocks = response['used'] // stat_.f_bsize
free_blocks = response['free'] // stat_.f_bsize
total_blocks = used_blocks + free_blocks
stat_.f_blocks = total_blocks
stat_.f_bfree = free_blocks
stat_.f_bavail = stat_.f_bfree
stat_.f_files = 0
stat_.f_ffree = 0
stat_.f_favail = stat_.f_ffree
return stat_
async def statfs(self, ctx):
stats = self.db.get_stats()
# base it off free memory
if self.db_path == ':memory:':
memfree = self._memfree()
f_bfree = memfree >> self.blkshft
f_bsize = self.blksize
f_bavail = f_bfree
f_ffree = f_bfree
f_favail = f_ffree
# base it of free disk
else:
real = os.statvfs(self.db_path)
f_bfree = real.f_bfree
f_bsize = real.f_bsize
f_bavail = real.f_bavail
f_ffree = real.f_ffree
f_favail = real.f_favail
ours = pyfuse3.StatvfsData()
ours.f_bsize = self.blksize
ours.f_frsize = self.blksize
ours.f_blocks = stats['f_blocks']
ours.f_files = stats['f_files']
ours.f_bfree = (f_bfree * f_bsize) >> self.blkshft
ours.f_bavail = (f_bavail * f_bsize) >> self.blkshft
ours.f_ffree = f_ffree
ours.f_favail = f_favail
# just set it (theres no real limit)
ours.f_namemax = 255
return ours
async def statfs(self, ctx):
root = self._inode_path_map[pyfuse3.ROOT_INODE]
stat_ = pyfuse3.StatvfsData()
try:
statfs = os.statvfs(root)
except OSError as exc:
raise FUSEError(exc.errno)
for attr in ('f_bsize', 'f_frsize', 'f_blocks', 'f_bfree', 'f_bavail',
'f_files', 'f_ffree', 'f_favail'):
setattr(stat_, attr, getattr(statfs, attr))
stat_.f_namemax = statfs.f_namemax - (len(root) + 1)
return stat_
async def statfs(self, ctx):
LOG.info('Getting statfs')
s = pyfuse3.StatvfsData()
try:
statfs = os.statvfs(self.rootdir)
except OSError as exc:
raise FUSEError(exc.errno)
for attr in ('f_bsize', 'f_frsize', 'f_blocks', 'f_bfree', 'f_bavail',
'f_files', 'f_ffree', 'f_favail'):
setattr(s, attr, getattr(statfs, attr))
#s.f_namemax = statfs.f_namemax - (len(self.rootdir)+1)
return s
def test_copy():
for obj in (pyfuse3.SetattrFields(), pyfuse3.RequestContext()):
pytest.raises(PicklingError, copy, obj)
for (inst, attr) in ((pyfuse3.EntryAttributes(), 'st_mode'),
(pyfuse3.StatvfsData(), 'f_files')):
setattr(inst, attr, 42)
inst_copy = copy(inst)
assert getattr(inst, attr) == getattr(inst_copy, attr)
inst = pyfuse3.FUSEError(10)
assert inst.errno == copy(inst).errno
async def statfs(self, ctx):
stat_ = pyfuse3.StatvfsData()
quota = self.fs.quota()
stat_.f_bsize = 512 # 块大小
stat_.f_frsize = 512 # 碎片块大小
size = quota.total
stat_.f_blocks = size // stat_.f_frsize # 块总数
stat_.f_bfree = quota.free // stat_.f_bsize # 剩余块数
stat_.f_bavail = stat_.f_bfree # 非特权用户可使用的块数
inodes = quota.free / 512
stat_.f_files = inodes # 索引节点总数
stat_.f_ffree = max(inodes, 100) # 可产生索引节点数
stat_.f_favail = stat_.f_ffree # 非特权用户可产生索引节点数
return stat_
async def statfs(self, ctx):
stat_ = pyfuse3.StatvfsData()
stat_.f_bsize = 512
stat_.f_frsize = 512
stat_.f_blocks = 0
stat_.f_bfree = 20
stat_.f_bavail = 20
thing = len(self._inode_map)
stat_.f_files = thing
stat_.f_ffree = thing + 2
stat_.f_favail = thing + 2
return stat_
async def statfs(self, ctx):
stat_ = pyfuse3.StatvfsData()
stat_.f_bsize = 512
stat_.f_frsize = 512
size = self.get_row('SELECT SUM(size) FROM inodes')[0]
stat_.f_blocks = size // stat_.f_frsize
stat_.f_bfree = max(size // stat_.f_frsize, 1024)
stat_.f_bavail = stat_.f_bfree
inodes = self.get_row('SELECT COUNT(id) FROM inodes')[0]
stat_.f_files = inodes
stat_.f_ffree = max(inodes, 100)
stat_.f_favail = stat_.f_ffree
return stat_
async def statfs(self, ctx):
"""Easisest function to get a entrypoint into the code (not many df calls all around)"""
self.embed_active = not self.embed_active
root = self.vfs.inode_to_path(pyfuse3.ROOT_INODE)
stat_ = pyfuse3.StatvfsData()
try:
statfs = os.statvfs(root)
except OSError as exc:
raise FUSEError(exc.errno)
for attr in ('f_bsize', 'f_frsize', 'f_blocks', 'f_bfree', 'f_bavail',
'f_files', 'f_ffree', 'f_favail'):
setattr(stat_, attr, getattr(statfs, attr))
stat_.f_namemax = statfs.f_namemax - (len(root.__str__()) + 1)
print(Col.bg(f'RAM-Usage: of _inode_path_map: {self.vfs.getRamUsage()} | ' +
f'elements: {str(len(self.vfs._inode_path_map))}'))
self.disk.printSummary()
return stat_
async def statfs(self, ctx):
log.debug('started')
stat_ = pyfuse3.StatvfsData()
# Get number of blocks & inodes
blocks = self.db.get_val("SELECT COUNT(id) FROM objects")
inodes = self.db.get_val("SELECT COUNT(id) FROM inodes")
size = self.db.get_val('SELECT SUM(size) FROM blocks')
if size is None:
size = 0
# file system block size, i.e. the minimum amount of space that can
# be allocated. This doesn't make much sense for S3QL, so we just
# return the average size of stored blocks.
stat_.f_frsize = max(4096, size // blocks) if blocks != 0 else 4096
# This should actually be the "preferred block size for doing IO. However, `df` incorrectly
# interprets f_blocks, f_bfree and f_bavail in terms of f_bsize rather than f_frsize as it
# should (according to statvfs(3)), so the only way to return correct values *and* have df
# print something sensible is to set f_bsize and f_frsize to the same value. (cf.
# http://bugs.debian.org/671490)
stat_.f_bsize = stat_.f_frsize
# size of fs in f_frsize units. Since backend is supposed to be unlimited,
# always return a half-full filesystem, but at least 1 TB)
fs_size = max(2 * size, 1024**4)
stat_.f_blocks = fs_size // stat_.f_frsize
stat_.f_bfree = (fs_size - size) // stat_.f_frsize
stat_.f_bavail = stat_.f_bfree # free for non-root
total_inodes = max(2 * inodes, 1000000)
stat_.f_files = total_inodes
stat_.f_ffree = total_inodes - inodes
stat_.f_favail = total_inodes - inodes # free for non-root
return stat_
