Build Your Own Oracle RAC 11g Cluster on Oracle Linux and iSCSI by Jeffrey Hunter. Learn how to set up and configure an Oracle RAC 11g Release 2 development cluster. Installing Gcc On Openfiler' title='Installing Gcc On Openfiler' />Troubleshooting ASM disk related issues using kfed and kfod. Skip to content. Overview. KFOD is a utility  to verify disks before installing Grid Infrastructure. KFED is a utility that can be used to read and modify ASM metadata blocks. As a first debug step read the ASM disk header block and verify the ASM disk header status. Gather info for available ASM Disks Note ASM disks can be created as. MultipathISCSII UDEV  disks. ASMLIB managed disks. News and feature lists of Linux and BSD distributions. Kilauea Mount Etna Mount Yasur Mount Nyiragongo and Nyamuragira Piton de la Fournaise Erta Ale. USUwMZY/UlU0SD52zBI/AAAAAAAACoo/KAS9_sSfaNw/s1600/10.png' alt='Installing Gcc On Openfiler' title='Installing Gcc On Openfiler' />UDEV managed disk. List all currently used ASM disk. ASM  asmcmd lsdsk k. TotalMB  FreeMB  OSMB  Name               Failgroup          FailgroupType  Library  Label  UDID  Product  Redund   Path. DATA0. 00. 0          DATA0. REGULAR         System                         UNKNOWN  devasmdisk. DATA0. 00. 1          DATA0. REGULAR         System                         UNKNOWN  devasmdisk. DATA0. 00. 2          DATA0. REGULAR         System                         UNKNOWN  devasmdisk. DATA0. 00. 3          DATA0. REGULAR         System                         UNKNOWN  devasmdisk. OCR0. 00. 0           OCR0. REGULAR         System                         UNKNOWN  devasmdisk. OCR0. 00. 1           OCR0. REGULAR         System                         UNKNOWN  devasmdisk. OCR0. 00. 2           OCR0. REGULAR         System                         UNKNOWN  devasmdisk. SSD0. 00. 0           SSD0. REGULAR         System                         UNKNOWN  devasmdisk. SSD0. 00. 1           SSD0. REGULAR         System                         UNKNOWN  devasmdisk. SSD0. 00. 2           SSD0. REGULAR         System                         UNKNOWN  devasmdisk. OPENFILERDG0. 00. OPENFILERDG0. 00. REGULAR         System                         UNKNOWN  devasmdiskOF disk. OPENFILERDG0. 00. OPENFILERDG0. 00. REGULAR         System                         UNKNOWN  devasmdiskOF disk. OPENFILERDG0. 00. OPENFILERDG0. 00. REGULAR         System                         UNKNOWN  devasmdiskOF disk. FRA0. 00. 1           FRA0. REGULAR         System                         UNKNOWN  devasmdiskfra. FRA0. 00. 2           FRA0. REGULAR         System                         UNKNOWN  devasmdiskfra. ASMLIBDG0. 00. 0     ASMLIBDG0. REGULAR         System                         UNKNOWN  devoracleasmdisksASMLIBDISK1. ASMLIBDG0. 00. 1     ASMLIBDG0. REGULAR         System                         UNKNOWN  devoracleasmdisksASMLIBDISK2. ASMLIBDG0. 00. 2     ASMLIBDG0. REGULAR         System                         UNKNOWN  devoracleasmdisksASMLIBDISK3. What sort of ASM disks are used Multipath managed disks. ASM multipath ll. OPNFILER,VIRTUAL DISK. G features0 hwhandler0 wprw. OPNFILER,VIRTUAL DISK. G features0 hwhandler0 wprw. OPNFILER,VIRTUAL DISK. G features0 hwhandler0 wprw. Check your Multipath Devices. ASM ls l  devmappergrac. Apr 2. 7 1. 0 4. Apr 2. OF disk. 1. lrwxrwxrwx. Apr 2. 7 1. 0 4. Apr 2. OF disk. 2. lrwxrwxrwx. Apr 2. 7 1. 0 4. Apr 2. OF disk. 3. rootgrac. ASM ls l devasmdiskOF. Apr 2. 7 1. 1 2. OF disk. Apr 2. 7 1. 0 4. OF disk. Apr 2. 7 1. 0 4. OF disk. ASM ls l devdmApr 2. Apr 2. 7 1. 0 4. Apr 2. Apr 2. 7 1. 0 4. Apr 2. Disks devmappergrac. DM devices. dm 2. ASM ls l devmappergrac. Apr 2. 7 1. 0 4. Apr 2. Apr 2. 7 1. 0 4. Partitions have its own Multipath devices. ASM ls l   devasmdiskOF disk. OF disk. 2 devasmdiskOF disk. Apr 2. 7 1. 1 3. OF disk. Apr 2. 7 1. 0 4. OF disk. Apr 2. 7 1. 0 4. OF disk. ASMLIB  managed disks. Drivers Ed Test Questions And Answers Nj here. ASM etcinit. doracleasm listdisks. UDEV managed disks. ASM cd etcudevrules. KERNELsd 1, BUSscsi, PROGRAMsbinscsiid g u d devparent, RESULT1. ATAVBOXHARDDISKVB0. NAMEasmdisk. 1udevsdb. OWNE. Rgrid, GROUPasmadmin, MODE0. KERNELsd 1, BUSscsi, PROGRAMsbinscsiid g u d devparent, RESULT1. ATAVBOXHARDDISKVB6. NAMEasmdisk. 1udevsdc. OWNE. Rgrid, GROUPasmadmin, MODE0. Here we can see that some of our DISK are based on UDEV rules. In short you can combine UDEV, ASMLIB and MULTIPATH based ASM disks on a single system. Run as grid user the  following script kfed. You need to use partitions for the kfed command. You must change ASMDISKPATH and ASMHOME to reflect your installation. Script kfed. sh . You many need to change ASMDISKPATH to pick up  all availabe ASM disks. MULTTPATH devices. OF disk       for UDEV configuration or. ASMLIB managed disks. ASMDISKPATHdevasmdevoracleasmdisks lt needs editing. ASMDISKPATH. cd u. ASMDISKPATH. echo. DH. DH. out. echo. FS. FS. out. echo . BK. out. kfed read i  aun1 blkn2. BK. out. echo . kfed read i aun2 blkn1 tmpkfedFD. FD. out. echo  . kfed read i aun2 blkn2   tmpkfedDD. DD. out. cat tmpkfedDH. Further details can be found in files listed by  ls l tmpkfedut. End script . Output from kfed. ASM   kfed. sh. Apr 2. Apr 2. 9 1. 0 0. Apr 2. Apr 2. 9 1. 0 0. ASMLIBDISK1. Apr 2. 9 1. 0 0. ASMLIBDISK2. Apr 2. 9 1. 0 0. ASMLIBDISK3. Apr 2. 9 1. 0 0. BK. Apr 2. 9 1. 0 0. DD. Apr 2. 9 1. 0 0. DH. Apr 2. 9 1. 0 0. FD. Apr 2. 9 1. 0 0. FS. KFBTYPDISKHEAD. kfbh. DATA0. 00. 0 0x. DATA 0x. DATA0. 00. 0 0x. KFBTYPDISKHEAD. DATA0. 00. 1 0x. DATA 0x. DATA0. 00. 1 0x. Collect ASM related Data like verions, OS protections, Partition Layout, Performance, AMS Disk Info using kfod. Script checkasmdsk. CHECKASMDSK. OUT 2 1 cat  CHECKASMDSK. OUT. ASMDISKSTRINGdevasmdiskdevoracleasmdisks      ASM Disk Discovery String  lt needs editing. ASMOWNERgrid                                              lt asmhome sfw owner here  lt needs editing. DBOWNERoracle                                             lt dbhome sfw owner here   lt needs editing. ASMOHu. 01app1. ASM ORACLEHOME             lt needs editing. DBOHu. 01apporacleproduct1. DB ORACLEHOME              lt needs editing. ASMOWNER. id  ASMOWNER                                                     lt asmhome sfw owner here   lt needs editing. DBOWNER. id   DBOWNER                                                    lt dbhome sfw owner here   lt needs editin. ASMOHbinoracle. ASMOHbinoracle                   lt asmhome binoracle   lt needs editing. ASMDISKSTRING. ls ltra  ASMDISKSTRING. ASMDISKSTRING. ASMLIB disks discover. ASM disk vasmdisk based on devvdevice vminor, vmajor. ASM Oracle Home     lt needs editing. Second Sight Save Game. ASMDISKSTRING disksall. ASMDISKSTRING disksall. Display ASMLIB managed Diks only. Use devoracleasmdisksinstead of ORCL to avoid user and grop are reported as unknown. End Script checkasmdsk.