是ORACLE提供的操作asm磁盘的工具
[oracle@hp580-5 ~]$ kfed -h
as/mlib ASM Library [asmlib='lib']
aun/um AU number to examine or update [AUNUM=number]
aus/z Allocation Unit size in bytes [AUSZ=number]
blkn/um Block number to examine or update [BLKNUM=number]
blks/z Metadata block size in bytes [BLKSZ=number]
ch/ksum Update checksum before each write [CHKSUM=YES/NO]
cn/t Count of AUs to process [CNT=number]
de/v ASM device to examine or update [DEV=string]
dm/pall Don't suppress repeated lines when dumping corrupt blocks [DMPALL=YES/NO]
o/p KFED operation type [OP=READ/WRITE/MERGE/REPAIR/NEW/FORM/FIND/STRUCT]
p/rovnm Name for provisioning purposes [PROVNM=string]
s/eek AU number to seek to [SEEK=number]
te/xt File name for translated block text [TEXT=string]
ty/pe ASM metadata block type number [TYPE=number]
[oracle@hp580-5 ~]$ kfed read /dev/asm-diske
kfbh.endian: 1 ; 0x000: 0x01
kfbh.hard: 130 ; 0x001: 0x82
kfbh.type: 1 ; 0x002: KFBTYP_DISKHEAD
kfbh.datfmt: 1 ; 0x003: 0x01
kfbh.block.blk: 0 ; 0x004: blk=0
kfbh.block.obj: 2147483650 ; 0x008: disk=2
kfbh.check: 2475393795 ; 0x00c: 0x938b8303
kfbh.fcn.base: 0 ; 0x010: 0x00000000
kfbh.fcn.wrap: 0 ; 0x014: 0x00000000
kfbh.spare1: 0 ; 0x018: 0x00000000
kfbh.spare2: 0 ; 0x01c: 0x00000000
kfdhdb.driver.provstr: ORCLDISK ; 0x000: length=8
kfdhdb.driver.reserved[0]: 0 ; 0x008: 0x00000000
kfdhdb.driver.reserved[1]: 0 ; 0x00c: 0x00000000
kfdhdb.driver.reserved[2]: 0 ; 0x010: 0x00000000
kfdhdb.driver.reserved[3]: 0 ; 0x014: 0x00000000
kfdhdb.driver.reserved[4]: 0 ; 0x018: 0x00000000
kfdhdb.driver.reserved[5]: 0 ; 0x01c: 0x00000000
kfdhdb.compat: 186646528 ; 0x020: 0x0b200000
kfdhdb.dsknum: 2 ; 0x024: 0x0002
kfdhdb.grptyp: 2 ; 0x026: KFDGTP_NORMAL
kfdhdb.hdrsts: 3 ; 0x027: KFDHDR_MEMBER
kfdhdb.dskname: DATA_0002 ; 0x028: length=9
kfdhdb.grpname: DATA ; 0x048: length=4
kfdhdb.fgname: DATA_0002 ; 0x068: length=9
kfdhdb.capname: ; 0x088: length=0
kfdhdb.crestmp.hi: 33005455 ; 0x0a8: HOUR=0xf DAYS=0x1c MNTH=0x7 YEAR=0x7de
kfdhdb.crestmp.lo: 1737447424 ; 0x0ac: USEC=0x0 MSEC=0x3d6 SECS=0x38 MINS=0x19
kfdhdb.mntstmp.hi: 33008080 ; 0x0b0: HOUR=0x10 DAYS=0xe MNTH=0xa YEAR=0x7de
kfdhdb.mntstmp.lo: 1192754176 ; 0x0b4: USEC=0x0 MSEC=0x1ff SECS=0x31 MINS=0x11
kfdhdb.secsize: 512 ; 0x0b8: 0x0200
kfdhdb.blksize: 4096 ; 0x0ba: 0x1000
kfdhdb.ausize: 1048576 ; 0x0bc: 0x00100000
kfdhdb.mfact: 113792 ; 0x0c0: 0x0001bc80
kfdhdb.dsksize: 512000 ; 0x0c4: 0x0007d000
kfdhdb.pmcnt: 6 ; 0x0c8: 0x00000006
kfdhdb.fstlocn: 1 ; 0x0cc: 0x00000001
kfdhdb.altlocn: 2 ; 0x0d0: 0x00000002
kfdhdb.f1b1locn: 2 ; 0x0d4: 0x00000002
kfdhdb.redomirrors[0]: 0 ; 0x0d8: 0x0000
kfdhdb.redomirrors[1]: 0 ; 0x0da: 0x0000
kfdhdb.redomirrors[2]: 0 ; 0x0dc: 0x0000
kfdhdb.redomirrors[3]: 0 ; 0x0de: 0x0000
kfdhdb.dbcompat: 168820736 ; 0x0e0: 0x0a100000
kfdhdb.grpstmp.hi: 33005455 ; 0x0e4: HOUR=0xf DAYS=0x1c MNTH=0x7 YEAR=0x7de
kfdhdb.grpstmp.lo: 1736783872 ; 0x0e8: USEC=0x0 MSEC=0x14e SECS=0x38 MINS=0x19
kfdhdb.vfstart: 256 ; 0x0ec: 0x00000100
kfdhdb.vfend: 288 ; 0x0f0: 0x00000120
kfdhdb.spfile: 59 ; 0x0f4: 0x0000003b
kfdhdb.spfflg: 1 ; 0x0f8: 0x00000001
kfdhdb.ub4spare[0]: 0 ; 0x0fc: 0x00000000
kfdhdb.ub4spare[1]: 0 ; 0x100: 0x00000000
kfdhdb.ub4spare[2]: 0 ; 0x104: 0x00000000
kfdhdb.ub4spare[3]: 0 ; 0x108: 0x00000000
kfdhdb.ub4spare[4]: 0 ; 0x10c: 0x00000000
kfdhdb.ub4spare[5]: 0 ; 0x110: 0x00000000
kfdhdb.ub4spare[6]: 0 ; 0x114: 0x00000000
kfdhdb.ub4spare[7]: 0 ; 0x118: 0x00000000
kfdhdb.ub4spare[8]: 0 ; 0x11c: 0x00000000
kfdhdb.ub4spare[9]: 0 ; 0x120: 0x00000000
kfdhdb.ub4spare[10]: 0 ; 0x124: 0x00000000
kfdhdb.ub4spare[11]: 0 ; 0x128: 0x00000000
kfdhdb.ub4spare[12]: 0 ; 0x12c: 0x00000000
kfdhdb.ub4spare[13]: 0 ; 0x130: 0x00000000
kfdhdb.ub4spare[14]: 0 ; 0x134: 0x00000000
kfdhdb.ub4spare[15]: 0 ; 0x138: 0x00000000
kfdhdb.ub4spare[16]: 0 ; 0x13c: 0x00000000
kfdhdb.ub4spare[17]: 0 ; 0x140: 0x00000000
kfdhdb.ub4spare[18]: 0 ; 0x144: 0x00000000
kfdhdb.ub4spare[19]: 0 ; 0x148: 0x00000000
kfdhdb.ub4spare[20]: 0 ; 0x14c: 0x00000000
kfdhdb.ub4spare[21]: 0 ; 0x150: 0x00000000
kfdhdb.ub4spare[22]: 0 ; 0x154: 0x00000000
kfdhdb.ub4spare[23]: 0 ; 0x158: 0x00000000
kfdhdb.ub4spare[24]: 0 ; 0x15c: 0x00000000
kfdhdb.ub4spare[25]: 0 ; 0x160: 0x00000000
kfdhdb.ub4spare[26]: 0 ; 0x164: 0x00000000
kfdhdb.ub4spare[27]: 0 ; 0x168: 0x00000000
kfdhdb.ub4spare[28]: 0 ; 0x16c: 0x00000000
kfdhdb.ub4spare[29]: 0 ; 0x170: 0x00000000
kfdhdb.ub4spare[30]: 0 ; 0x174: 0x00000000
kfdhdb.ub4spare[31]: 0 ; 0x178: 0x00000000
kfdhdb.ub4spare[32]: 0 ; 0x17c: 0x00000000
kfdhdb.ub4spare[33]: 0 ; 0x180: 0x00000000
kfdhdb.ub4spare[34]: 0 ; 0x184: 0x00000000
kfdhdb.ub4spare[35]: 0 ; 0x188: 0x00000000
kfdhdb.ub4spare[36]: 0 ; 0x18c: 0x00000000
kfdhdb.ub4spare[37]: 0 ; 0x190: 0x00000000
kfdhdb.ub4spare[38]: 0 ; 0x194: 0x00000000
kfdhdb.ub4spare[39]: 0 ; 0x198: 0x00000000
kfdhdb.ub4spare[40]: 0 ; 0x19c: 0x00000000
kfdhdb.ub4spare[41]: 0 ; 0x1a0: 0x00000000
kfdhdb.ub4spare[42]: 0 ; 0x1a4: 0x00000000
kfdhdb.ub4spare[43]: 0 ; 0x1a8: 0x00000000
kfdhdb.ub4spare[44]: 0 ; 0x1ac: 0x00000000
kfdhdb.ub4spare[45]: 0 ; 0x1b0: 0x00000000
kfdhdb.ub4spare[46]: 0 ; 0x1b4: 0x00000000
kfdhdb.ub4spare[47]: 0 ; 0x1b8: 0x00000000
kfdhdb.ub4spare[48]: 0 ; 0x1bc: 0x00000000
kfdhdb.ub4spare[49]: 0 ; 0x1c0: 0x00000000
kfdhdb.ub4spare[50]: 0 ; 0x1c4: 0x00000000
kfdhdb.ub4spare[51]: 0 ; 0x1c8: 0x00000000
kfdhdb.ub4spare[52]: 0 ; 0x1cc: 0x00000000
kfdhdb.ub4spare[53]: 0 ; 0x1d0: 0x00000000
kfdhdb.acdb.aba.seq: 0 ; 0x1d4: 0x00000000
kfdhdb.acdb.aba.blk: 0 ; 0x1d8: 0x00000000
kfdhdb.acdb.ents: 0 ; 0x1dc: 0x0000
kfdhdb.acdb.ub2spare: 0 ; 0x1de: 0x0000
[oracle@hp580-5 ~]$
ASM 磁盘里的一些名词解释
（1）kfbh.endian
kf3.h /*endianness of writer */
Littleendian = 1
Bigendian = 0
（2） kfbh.hard
kf3.h /*H.A.R.D. magic # and block size */
（3） kfbh.type
kf3.h /*metadata blocktype */
（4） kfbh.datfmt
kf3.h /*metadata block data format */
（5） kfbh.block
kf3.h /* blocklocation of thisblock */
blk -- Diskheader should have T=0 and NUMB=0x0
obj -- Diskheader should have TYPE=0x8 NUMB=
blk and obj values arederived from a series of macros in kf3.h. See
"KFBL Macros"in kf3.h for more information.
（6） kfbh.check
kf3.h /* checkvalue to verify consistency */
（7） kfbh.fcn
kf3.h /*change number of last change */-
（8） kfdhdb.driver
kf3.h /*OSMLIB driver reserved block */
If nodriver is defined "ORCLDISK" is used.
（9） kfdhdb.compat
kf3.h /*Comaptible software version */
example:0x0a100000
Youget:
a=101=1 so 10.1.0.0.0
（10） kfdhdb.dsknum
kf3.h /* OSMdisknumber *
This is thedisk number. The first disk being "0". There can be up to
ub2 disks ina diskgroup. This allows for 65336 disks 0 through 65335.
（11） kfdhdb.grptyp
kf3.h /* Diskgrouptype */
（12） kfdhdb.hdrsts
kf3.h /* Diskheaderstatus */
This is whatis used to determine if a disk is available or not to
thediskgroup. 0x03 is the correct value for a valid status.
（13）kfdhdb.dskname /*OSMdisk name */
（14）kfdhdb.grpname /*OSM disk group name */
（15）kfdhdb.fgname /*Failure group name */
（16）kfdhdb.capname /*Capacity grp, unused*/
（17）kfdhdb.crestmp /*Creationtimestamp */
（18）kfdhdb.mntstmp /*Mounttimestamp */
kf3.hTo derive the hi and low time`from an unformated dump use the
"KFTS Macros" inkf3.h.
（19） kfdhdb.secsize
kf3.h /* Disksector size (bytes) */
This is thephysical sector size of the disk in bytes. All I/O's to the
disk aredescribed in physical sectors. This must be a power of 2. An
ideal valuewould be 4096, but most disks are formatted with 512 byte
sectors.(from asmlib.h)
（20） kfdhdb.blksize
kf3.h /*Metadata block (bytes) */
（21） kfdhdb.ausize
kf3.h /*Allocation Unit (bytes) */
（22） kfdhdb.mfact
kf3.h /*Stride between phys addr AUs */
（23） kfdhdb.dsksize
kf3.h /* Disksize inAUs */
Mulitply byAUs to get actual size of disk when added.
（24） kfdhdb.pmcnt
kf3.h /*Permanent phys addressed AUs */
Number ofphysically addressed allocation units.
（25） kfdhdb.fstlocn
kf3.h /* FirstFreeSpace table blk num */
Used to findfreespace.
（26） kfdhdb.altlocn
kf3.h /* FirstAlocation table blk num */
Used to findalocated space.
（27） kfdhdb.f1b1locn
kf3.h /* FileDirectory blk 1 AU num */
Beginging forfile directory.