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btrfs-progs: port btrfs-debugfs to python3 

There's still some interest in the btrfs-debugfs tool, make it work with
python v3 until we have a replacement.

Issue: #261
Signed-off-by: Lakshmipathi <lakshmipathi.ganapathi@collabora.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Lakshmipathi 2020-06-22 09:52:38 +05:30 committed by David Sterba
parent 68e26c1917
commit 43b8ceba8b
1 changed files with 22 additions and 22 deletions
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btrfs-debugfs
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@ -1,4 +1,4 @@
#!/usr/bin/env python2
#!/usr/bin/env python3
#
# Simple python program to print out all the extents of a single file
# LGPLv2 license
@ -7,8 +7,8 @@
import sys, os, fcntl, ctypes, stat, argparse
# helpers for max ints
maxu64 = (1L << 64) - 1
maxu32 = (1L << 32) - 1
maxu64 = (1 << 64) - 1
maxu32 = (1 << 32) - 1
# the inode (like form stat)
BTRFS_INODE_ITEM_KEY = 1
@ -149,7 +149,7 @@ class btrfs_ioctl_search():
self.args.buf_size = args_buffer_size
# magic encoded for x86_64 this is the v2 search ioctl
self.ioctl_num = 3228603409L
self.ioctl_num = 3228603409
# the results of the search get stored into args.buf
def search(self, fd, nritems=65536):
@ -195,8 +195,8 @@ def print_one_extent(header, fi, extent_hash):
ram_bytes = fi.ram_bytes
else:
ram_bytes = inline_len
print "(%Lu %Lu): ram %Lu disk 0 disk_size %Lu -- inline" % \
(header.objectid, header.offset, ram_bytes, inline_len)
print("(%Lu %Lu): ram %Lu disk 0 disk_size %Lu -- inline" % \
(header.objectid, header.offset, ram_bytes, inline_len))
extent_hash[-1] = inline_len
return
@ -204,8 +204,8 @@ def print_one_extent(header, fi, extent_hash):
tag = " -- hole"
else:
tag = ""
print "(%Lu %Lu): ram %Lu disk %Lu disk_size %Lu%s" % (header.objectid,
header.offset, fi.num_bytes, fi.disk_bytenr, fi.disk_num_bytes, tag)
print("(%Lu %Lu): ram %Lu disk %Lu disk_size %Lu%s" % (header.objectid,
header.offset, fi.num_bytes, fi.disk_bytenr, fi.disk_num_bytes, tag))
if fi.disk_bytenr:
extent_hash[fi.disk_bytenr] = fi.disk_num_bytes
@ -222,7 +222,7 @@ def print_file_extents(filename):
try:
fd = os.open(filename, os.O_RDONLY)
st = os.fstat(fd)
except Exception, e:
except Exception as e:
sys.stderr.write("Failed to open %s (%s)\n" % (filename, e))
return -1
@ -237,7 +237,7 @@ def print_file_extents(filename):
while True:
try:
s.search(fd)
except Exception, e:
except Exception as e:
sys.stderr.write("Search ioctl failed for %s (%s)\n" % (filename, e))
return -1
@ -251,7 +251,7 @@ def print_file_extents(filename):
h = ctypes.addressof(header)
p_left = args_buffer_size
for x in xrange(0, s.args.nr_items):
for x in range(0, s.args.nr_items):
# for each item, copy the header from the buffer into
# our header struct.
ctypes.memmove(h, p, header_size)
@ -286,7 +286,7 @@ def print_file_extents(filename):
total_on_disk = 0
total_extents = 0
for x in extent_hash.itervalues():
for x in extent_hash.values():
total_on_disk += x
total_extents += 1
@ -294,9 +294,9 @@ def print_file_extents(filename):
if total_on_disk == 0:
total_on_disk = 1
print "file: %s extents %Lu disk size %Lu logical size %Lu ratio %.2f" % \
print("file: %s extents %Lu disk size %Lu logical size %Lu ratio %.2f" % \
(filename, total_extents, total_on_disk, st.st_size,
float(st.st_size) / float(total_on_disk))
float(st.st_size) / float(total_on_disk)))
return 0
def print_block_groups(mountpoint):
@ -314,14 +314,14 @@ def print_block_groups(mountpoint):
try:
fd = os.open(mountpoint, os.O_RDONLY)
os.fstat(fd)
except Exception, e:
except Exception as e:
sys.stderr.write("Failed to open %s (%s)\n" % (mountpoint, e))
return -1
while True:
try:
s.search(fd)
except Exception, e:
except Exception as e:
sys.stderr.write("Search ioctl failed for %s (%s)\n" % (mountpoint, e))
return -1
@ -335,7 +335,7 @@ def print_block_groups(mountpoint):
h = ctypes.addressof(header)
p_left = args_buffer_size
for _ in xrange(0, s.args.nr_items):
for _ in range(0, s.args.nr_items):
# for each itme, copy the header from the buffer into
# our header struct
ctypes.memmove(h, p, header_size)
@ -356,13 +356,13 @@ def print_block_groups(mountpoint):
ctypes.memmove(ctypes.addressof(bg), p, ctypes.sizeof(bg))
if bg.flags & BTRFS_BLOCK_GROUP_DATA:
print "block group offset %s len %s used %s chunk_objectid %Lu flags %Lu usage %.2f" %\
print("block group offset %s len %s used %s chunk_objectid %Lu flags %Lu usage %.2f" %\
('{:>14}'.format(header.objectid),
'{:>10}'.format(header.offset),
'{:>10}'.format(bg.used),
bg.chunk_objectid,
bg.flags,
float(bg.used) / float(header.offset))
float(bg.used) / float(header.offset)))
total_free += (header.offset - bg.used)
if min_used >= bg.used:
@ -382,10 +382,10 @@ def print_block_groups(mountpoint):
if s.args.min_objectid > s.args.max_objectid:
break
print "total_free %Lu min_used %Lu free_of_min_used %Lu block_group_of_min_used %Lu" %\
(total_free, min_used, free_of_min_used, bg_of_min_used)
print("total_free %Lu min_used %Lu free_of_min_used %Lu block_group_of_min_used %Lu" %\
(total_free, min_used, free_of_min_used, bg_of_min_used))
if (total_free - free_of_min_used) >= min_used:
print "balance block group (%Lu) can reduce the number of data block group" % bg_of_min_used
print("balance block group (%Lu) can reduce the number of data block group" % bg_of_min_used)
return 0