python py_innodb_page_info.py -v /usr/local/var/mysql/ibdata1
mylib.py
#encoding=utf-8
import os
import include
from include import * TABLESPACE_NAME='D:\\mysql_data\\test\\t.ibd'
VARIABLE_FIELD_COUNT = 1
NULL_FIELD_COUNT = 0 class myargv(object):
def __init__(self, argv):
self.argv = argv
self.parms = {}
self.tablespace = '' def parse_cmdline(self):
argv = self.argv
if len(argv) == 1:
print 'Usage: python py_innodb_page_info.py [OPTIONS] tablespace_file'
print 'For more options, use python py_innodb_page_info.py -h'
return 0
while argv:
if argv[0][0] == '-':
if argv[0][1] == 'h':
self.parms[argv[0]] = ''
argv = argv[1:]
break
if argv[0][1] == 'v':
self.parms[argv[0]] = ''
argv = argv[1:]
else:
self.parms[argv[0]] = argv[1]
argv = argv[2:]
else:
self.tablespace = argv[0]
argv = argv[1:]
if self.parms.has_key('-h'):
print 'Get InnoDB Page Info'
print 'Usage: python py_innodb_page_info.py [OPTIONS] tablespace_file\n'
print 'The following options may be given as the first argument:'
print '-h help '
print '-o output put the result to file'
print '-t number thread to anayle the tablespace file'
print '-v verbose mode'
return 0
return 1 def mach_read_from_n(page,start_offset,length):
ret = page[start_offset:start_offset+length]
return ret.encode('hex') def get_innodb_page_type(myargv):
f=file(myargv.tablespace,'rb')
fsize = os.path.getsize(f.name)/INNODB_PAGE_SIZE
ret = {}
for i in range(fsize):
page = f.read(INNODB_PAGE_SIZE)
page_offset = mach_read_from_n(page,FIL_PAGE_OFFSET,4)
page_type = mach_read_from_n(page,FIL_PAGE_TYPE,2)
if myargv.parms.has_key('-v'):
if page_type == '45bf':
page_level = mach_read_from_n(page,FIL_PAGE_DATA+PAGE_LEVEL,2)
print "page offset %s, page type <%s>, page level <%s>"%(page_offset,innodb_page_type[page_type],page_level)
else:
print "page offset %s, page type <%s>"%(page_offset,innodb_page_type[page_type])
if not ret.has_key(page_type):
ret[page_type] = 1
else:
ret[page_type] = ret[page_type] + 1
print "Total number of page: %d:"%fsize
for type in ret:
print "%s: %s"%(innodb_page_type[type],ret[type])
###
py_innodb_page_info.py
#! /usr/bin/env python
#encoding=utf-8
import mylib
from sys import argv
from mylib import myargv if __name__ == '__main__':
myargv = myargv(argv)
if myargv.parse_cmdline() == 0:
pass
else:
mylib.get_innodb_page_type(myargv) ####
include.py
#encoding=utf-8
INNODB_PAGE_SIZE = 16*1024*1024 # Start of the data on the page
FIL_PAGE_DATA = 38
FIL_PAGE_OFFSET = 4 # page offset inside space
FIL_PAGE_TYPE = 24 # File page type # Types of an undo log segment */
TRX_UNDO_INSERT = 1
TRX_UNDO_UPDATE = 2 # On a page of any file segment, data may be put starting from this offset
FSEG_PAGE_DATA = FIL_PAGE_DATA # The offset of the undo log page header on pages of the undo log
TRX_UNDO_PAGE_HDR = FSEG_PAGE_DATA PAGE_LEVEL = 26 #level of the node in an index tree; the leaf level is the level 0 */ innodb_page_type={
'':u'Freshly Allocated Page',
'':u'Undo Log Page',
'':u'File Segment inode',
'':u'Insert Buffer Free List',
'':u'Insert Buffer Bitmap',
'':u'System Page',
'':u'Transaction system Page',
'':u'File Space Header',
'':u'扩展描述页',
'000a':u'Uncompressed BLOB Page',
'000b':u'1st compressed BLOB Page',
'000c':u'Subsequent compressed BLOB Page',
'45bf':u'B-tree Node'
} innodb_page_direction={
'': 'Unknown(0x0000)',
'': 'Page Left',
'': 'Page Right',
'': 'Page Same Rec',
'': 'Page Same Page',
'': 'Page No Direction',
'ffff': 'Unkown2(0xffff)'
}
INNODB_PAGE_SIZE=1024*16 # InnoDB Page 16K
####
python py_innodb_page_info.py /usr/local/var/mysql/ibdata1
python py_innodb_page_info.py -v /usr/local/var/mysql/ibdata1
➜ ~ python py_innodb_page_info.py -v /usr/local/var/mysql/ibdata1
page offset 00000000, page type <File Space Header>
page offset 00000001, page type <Insert Buffer Bitmap>
page offset 00000002, page type <File Segment inode>
page offset 00000003, page type <System Page>
page offset 00000004, page type <B-tree Node>, page level <0000>
page offset 00000005, page type <Transaction system Page>
page offset 00000006, page type <System Page>
page offset 00000007, page type <System Page>
page offset 00000008, page type <B-tree Node>, page level <0001>
page offset 00000009, page type <B-tree Node>, page level <0001>
page offset 0000000d, page type <Freshly Allocated Page>
page offset 0000000e, page type <Freshly Allocated Page>
page offset 0000000f, page type <Freshly Allocated Page>
page offset 00000010, page type <Freshly Allocated Page>
page offset 0000002d, page type <System Page>
page offset 0000002e, page type <System Page>
page offset 0000002f, page type <System Page>
page offset 00000030, page type <System Page>
page offset 000001c6, page type <Undo Log Page>
page offset 00000000, page type <File Space Header>
page offset 000001e0, page type <File Segment inode>
page offset 00000108, page type <System Page>
page offset 00000109, page type <System Page>
page offset 00000003, page type <B-tree Node>, page level <0000>
page offset 00000005, page type <B-tree Node>, page level <0000>
page offset 000001c9, page type <Undo Log Page>
page offset 00000003, page type <B-tree Node>, page level <0000>
page offset 000000f3, page type <File Segment inode>
page offset 0000011c, page type <Undo Log Page>
page offset 00000034, page type <System Page>
page offset 0000015c, page type <B-tree Node>, page level <0000>
page offset 000001a1, page type <B-tree Node>, page level <0000>
page offset 0000019b, page type <B-tree Node>, page level <0000>
page offset 00000149, page type <B-tree Node>, page level <0000>
page offset 00000009, page type <B-tree Node>, page level <0001>
page offset 00000000, page type <File Space Header>
page offset 0000027f, page type <B-tree Node>, page level <0000>
page offset 0000000c, page type <B-tree Node>, page level <0001>
page offset 00000007, page type <System Page>
page offset 00000000, page type <File Space Header>
page offset 00000001, page type <Insert Buffer Bitmap>
page offset 00000002, page type <File Segment inode>
page offset 00000003, page type <B-tree Node>, page level <0001>
page offset 00000004, page type <B-tree Node>, page level <0000>
page offset 00000005, page type <B-tree Node>, page level <0000>
page offset 0000015e, page type <Undo Log Page>
page offset 00000172, page type <Undo Log Page>
page offset 0000018a, page type <Undo Log Page>
page offset 0000012d, page type <Undo Log Page>
page offset 000001c4, page type <Undo Log Page>
page offset 00000103, page type <System Page>
page offset 00000104, page type <System Page>
page offset 000001b2, page type <Undo Log Page>
page offset 00000002, page type <File Segment inode>
page offset 00000003, page type <B-tree Node>, page level <0001>
page offset 00000004, page type <B-tree Node>, page level <0000>
page offset 00000005, page type <B-tree Node>, page level <0000>
page offset 00000006, page type <B-tree Node>, page level <0000>
page offset 00000000, page type <File Space Header>
page offset 00000001, page type <Insert Buffer Bitmap>
page offset 00000002, page type <File Segment inode>
page offset 00000003, page type <B-tree Node>, page level <0000>
page offset 00000000, page type <File Space Header>
page offset 00000001, page type <Insert Buffer Bitmap>
page offset 00000002, page type <File Segment inode>
page offset 00000003, page type <B-tree Node>, page level <0000>
page offset 00000004, page type <B-tree Node>, page level <0000>
page offset 00000000, page type <File Space Header>
page offset 00000001, page type <Insert Buffer Bitmap>
page offset 00000002, page type <File Segment inode>
page offset 00000003, page type <B-tree Node>, page level <0000>
page offset 00000000, page type <File Space Header>
page offset 00000001, page type <Insert Buffer Bitmap>
page offset 00000002, page type <File Segment inode>
page offset 00000003, page type <B-tree Node>, page level <0001>
page offset 00000004, page type <B-tree Node>, page level <0000>
page offset 00000000, page type <File Space Header>
page offset 00000001, page type <Insert Buffer Bitmap>
page offset 00000002, page type <File Segment inode>
page offset 00000003, page type <B-tree Node>, page level <0001>
page offset 00000004, page type <B-tree Node>, page level <0000>
page offset 00000000, page type <File Space Header>
page offset 00000001, page type <Insert Buffer Bitmap>
page offset 00000002, page type <File Segment inode>
page offset 00000003, page type <B-tree Node>, page level <0000>
page offset 00000000, page type <File Space Header>
page offset 00000001, page type <Insert Buffer Bitmap>
page offset 00000002, page type <File Segment inode>
page offset 00000003, page type <B-tree Node>, page level <0000>
page offset 00000000, page type <File Space Header>
page offset 00000005, page type <B-tree Node>, page level <0000>
page offset 00000004, page type <B-tree Node>, page level <0000>
page offset 00000005, page type <B-tree Node>, page level <0000>
page offset 000000bb, page type <Freshly Allocated Page>
page offset 000000bc, page type <Freshly Allocated Page>
page offset 000000c0, page type <System Page>
page offset 000000c1, page type <System Page>
page offset 000000e4, page type <System Page>
page offset 000000e5, page type <System Page>
page offset 000000f3, page type <File Segment inode>
page offset 000000f4, page type <System Page>
page offset 000000f5, page type <System Page>
page offset 000000f6, page type <System Page>
page offset 000000f7, page type <System Page>
page offset 0000010d, page type <Undo Log Page>
page offset 0000010e, page type <B-tree Node>, page level <0000>
page offset 0000010f, page type <B-tree Node>, page level <0000>
page offset 00000110, page type <B-tree Node>, page level <0000>
page offset 00000111, page type <B-tree Node>, page level <0000>
page offset 00000112, page type <Undo Log Page>
page offset 00000113, page type <B-tree Node>, page level <0001>
page offset 00000114, page type <B-tree Node>, page level <0001>
page offset 00000115, page type <Undo Log Page>
page offset 00000116, page type <B-tree Node>, page level <0000>
page offset 00000117, page type <Undo Log Page>
page offset 00000118, page type <Undo Log Page>
page offset 00000119, page type <Undo Log Page>
page offset 0000011a, page type <Undo Log Page>
page offset 00000148, page type <B-tree Node>, page level <0000>
page offset 00000149, page type <B-tree Node>, page level <0000>
page offset 0000014a, page type <Undo Log Page>
page offset 0000014b, page type <B-tree Node>, page level <0000>
page offset 0000014c, page type <B-tree Node>, page level <0000>
page offset 0000014d, page type <Undo Log Page>
page offset 0000014e, page type <Undo Log Page>
page offset 0000014f, page type <Undo Log Page>
page offset 00000150, page type <Undo Log Page>
page offset 00000157, page type <File Segment inode>
page offset 00000158, page type <Undo Log Page>
page offset 00000159, page type <Undo Log Page>
page offset 0000015a, page type <B-tree Node>, page level <0000>
page offset 0000015b, page type <Undo Log Page>
page offset 0000015c, page type <B-tree Node>, page level <0000>
page offset 0000015d, page type <Undo Log Page>
page offset 0000015e, page type <Undo Log Page>
page offset 0000015f, page type <Undo Log Page>
page offset 00000165, page type <B-tree Node>, page level <0000>
page offset 00000166, page type <B-tree Node>, page level <0000>
page offset 00000167, page type <B-tree Node>, page level <0000>
page offset 00000168, page type <B-tree Node>, page level <0000>
page offset 00000169, page type <Undo Log Page>
page offset 0000016a, page type <Undo Log Page>
page offset 0000016b, page type <B-tree Node>, page level <0000>
page offset 0000016c, page type <Undo Log Page>
page offset 0000016d, page type <Undo Log Page>
page offset 0000016e, page type <Undo Log Page>
page offset 0000016f, page type <Undo Log Page>
page offset 00000170, page type <B-tree Node>, page level <0000>
page offset 00000171, page type <Undo Log Page>
page offset 00000172, page type <Undo Log Page>
page offset 00000173, page type <Undo Log Page>
page offset 00000174, page type <Undo Log Page>
page offset 00000175, page type <Undo Log Page>
page offset 00000176, page type <B-tree Node>, page level <0000>
page offset 00000177, page type <Undo Log Page>
page offset 00000178, page type <B-tree Node>, page level <0000>
page offset 00000179, page type <B-tree Node>, page level <0000>
page offset 0000017a, page type <B-tree Node>, page level <0000>
page offset 0000017d, page type <Undo Log Page>
page offset 0000017e, page type <B-tree Node>, page level <0000>
page offset 0000017f, page type <Undo Log Page>
page offset 00000180, page type <Undo Log Page>
page offset 00000181, page type <Undo Log Page>
page offset 00000182, page type <File Segment inode>
page offset 00000183, page type <Undo Log Page>
page offset 00000184, page type <B-tree Node>, page level <0000>
page offset 00000185, page type <Undo Log Page>
page offset 00000186, page type <B-tree Node>, page level <0000>
page offset 00000187, page type <Undo Log Page>
page offset 00000188, page type <Undo Log Page>
page offset 00000189, page type <Undo Log Page>
page offset 0000018a, page type <Undo Log Page>
page offset 0000018b, page type <Undo Log Page>
page offset 0000018c, page type <Undo Log Page>
page offset 0000018d, page type <Undo Log Page>
page offset 0000018e, page type <Undo Log Page>
page offset 0000018f, page type <Undo Log Page>
page offset 00000190, page type <Undo Log Page>
page offset 00000191, page type <B-tree Node>, page level <0000>
page offset 00000192, page type <B-tree Node>, page level <0000>
page offset 00000193, page type <Undo Log Page>
page offset 00000194, page type <Undo Log Page>
page offset 00000195, page type <B-tree Node>, page level <0000>
page offset 00000196, page type <Undo Log Page>
page offset 00000197, page type <B-tree Node>, page level <0000>
page offset 00000198, page type <Undo Log Page>
page offset 00000199, page type <Undo Log Page>
page offset 0000019a, page type <B-tree Node>, page level <0000>
page offset 0000019b, page type <B-tree Node>, page level <0000>
page offset 0000019c, page type <Undo Log Page>
page offset 0000019d, page type <Undo Log Page>
page offset 0000019e, page type <Undo Log Page>
page offset 0000019f, page type <Undo Log Page>
page offset 000001a0, page type <Undo Log Page>
page offset 000001a1, page type <B-tree Node>, page level <0000>
page offset 000001a2, page type <Undo Log Page>
page offset 000001a3, page type <B-tree Node>, page level <0000>
page offset 000001a4, page type <Undo Log Page>
page offset 000001a5, page type <Undo Log Page>
page offset 000001a6, page type <Undo Log Page>
page offset 000001a7, page type <Undo Log Page>
page offset 000001a8, page type <Undo Log Page>
page offset 000001a9, page type <B-tree Node>, page level <0000>
page offset 000001aa, page type <Undo Log Page>
page offset 000001ab, page type <Undo Log Page>
page offset 000001ac, page type <Undo Log Page>
page offset 000001ad, page type <Undo Log Page>
page offset 000001ae, page type <Undo Log Page>
page offset 000001af, page type <B-tree Node>, page level <0000>
page offset 000001b0, page type <Undo Log Page>
page offset 000001b1, page type <Undo Log Page>
page offset 000001b2, page type <Undo Log Page>
page offset 000001cc, page type <B-tree Node>, page level <0000>
page offset 000001cd, page type <Undo Log Page>
page offset 000001ce, page type <B-tree Node>, page level <0000>
page offset 000001cf, page type <Undo Log Page>
page offset 000001d0, page type <B-tree Node>, page level <0000>
page offset 000001d1, page type <B-tree Node>, page level <0000>
page offset 000001d2, page type <Undo Log Page>
page offset 000001d3, page type <Undo Log Page>
page offset 000001d4, page type <B-tree Node>, page level <0000>
page offset 000001d5, page type <B-tree Node>, page level <0000>
page offset 000001d6, page type <B-tree Node>, page level <0000>
page offset 000001d7, page type <Undo Log Page>
page offset 000001d8, page type <Undo Log Page>
page offset 000001d9, page type <Undo Log Page>
page offset 000001de, page type <B-tree Node>, page level <0000>
page offset 000001df, page type <Undo Log Page>
page offset 000001e0, page type <File Segment inode>
page offset 000001e1, page type <Undo Log Page>
page offset 000001e2, page type <Undo Log Page>
page offset 000001e3, page type <Undo Log Page>
page offset 000001ef, page type <B-tree Node>, page level <0000>
page offset 000001f0, page type <Undo Log Page>
page offset 000001f1, page type <Undo Log Page>
page offset 000001f2, page type <Undo Log Page>
page offset 000001f5, page type <B-tree Node>, page level <0000>
page offset 000001f6, page type <Undo Log Page>
page offset 000001f7, page type <Undo Log Page>
page offset 000001f8, page type <Undo Log Page>
page offset 000001f9, page type <Undo Log Page>
page offset 000001ff, page type <B-tree Node>, page level <0000>
page offset 00000200, page type <B-tree Node>, page level <0000>
page offset 00000201, page type <Undo Log Page>
page offset 00000202, page type <Undo Log Page>
page offset 00000203, page type <Undo Log Page>
page offset 00000204, page type <Undo Log Page>
page offset 00000205, page type <Undo Log Page>
page offset 00000206, page type <Undo Log Page> －－undo页的分配
page offset 00000207, page type <Undo Log Page>
page offset 00000208, page type <Undo Log Page>
page offset 00000209, page type <Undo Log Page>
page offset 0000020a, page type <Undo Log Page>
page offset 0000020b, page type <Undo Log Page>
page offset 00000000, page type <Freshly Allocated Page>
page offset 00000000, page type <Freshly Allocated Page>
page offset 00000000, page type <Freshly Allocated Page>
page offset 00000000, page type <Freshly Allocated Page>
page offset 00000000, page type <Freshly Allocated Page> --64个连续页的分配
Total number of page: 4864:
Insert Buffer Bitmap: 9
System Page: 104
Transaction system Page: 1
Freshly Allocated Page: 4293
Undo Log Page: 281
File Segment inode: 16
B-tree Node: 148
File Space Header: 12
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