Repair ASM disk header block in AU[0] with kfed repair
- In ASM versions 11.1.0.7 and later, the ASM disk header block is backed up in the second last ASM metadata block in the allocation unit 1.
Verify ASM DISK Header block located in AU[0] and AU[1] AU[0] : [root@grac41 Desktop]# kfed read /dev/asm_test_1G_disk1 aun=0 blkn=0 | egrep 'name|size|type' kfbh.type: 1 ; 0x002: KFBTYP_DISKHEAD kfdhdb.dskname: TEST_0000 ; 0x028: length=9 kfdhdb.grpname: TEST ; 0x048: length=4 kfdhdb.fgname: TEST_0000 ; 0x068: length=9 kfdhdb.capname: ; 0x088: length=0 kfdhdb.secsize: 512 ; 0x0b8: 0x0200 kfdhdb.blksize: 4096 ; 0x0ba: 0x1000 kfdhdb.ausize: 1048576 ; 0x0bc: 0x00100000 kfdhdb.dsksize: 1023 ; 0x0c4: 0x000003ff AU[1] : [root@grac41 Desktop]# kfed read /dev/asm_test_1G_disk1 aun=1 blkn=254 | egrep 'name|size|type' kfbh.type: 1 ; 0x002: KFBTYP_DISKHEAD kfdhdb.dskname: TEST_0000 ; 0x028: length=9 kfdhdb.grpname: TEST ; 0x048: length=4 kfdhdb.fgname: TEST_0000 ; 0x068: length=9 kfdhdb.capname: ; 0x088: length=0 kfdhdb.secsize: 512 ; 0x0b8: 0x0200 kfdhdb.blksize: 4096 ; 0x0ba: 0x1000 kfdhdb.ausize: 1048576 ; 0x0bc: 0x00100000 kfdhdb.dsksize: 1023 ; 0x0c4: 0x000003ff Erase Disk header block in first AU ( aun=0 blkn=0 ) # dd if=/dev/zero of=/dev/asm_test_1G_disk1 bs=4096 count=1 Verify ASM disk header # kfed read /dev/asm_test_1G_disk1 aun=0 blkn=0 kfbh.type: 0 ; 0x002: KFBTYP_INVALID KFED-00322: Invalid content encountered during block traversal: [kfbtTraverseBlock][Invalid OSM block type][][0] --> Corrupted ASM disk header detected in AU [0] Repair disk header in AU[0] with kfed [grid@grac41 ASM]$ kfed repair /dev/asm_test_1G_disk1 [grid@grac41 ASM]$ kfed read /dev/asm_test_1G_disk1 aun=0 blkn=0 kfbh.type: 1 ; 0x002: KFBTYP_DISKHEAD kfdhdb.dskname: TEST_0000 ; 0x028: length=9 kfdhdb.grpname: TEST ; 0x048: length=4 kfdhdb.fgname: TEST_0000 ; 0x068: length=9 kfdhdb.capname: ; 0x088: length=0 kfdhdb.secsize: 512 ; 0x0b8: 0x0200 kfdhdb.blksize: 4096 ; 0x0ba: 0x1000 kfdhdb.ausize: 1048576 ; 0x0bc: 0x00100000 kfdhdb.dsksize: 1023 ; 0x0c4: 0x000003ff --> kfed repair worked - Disk header restored
Howdy fantastic blog! Does running a blog such as this take a great deal of work? I have absolutely no knowledge of programming but I was hoping to start my own blog in the near future. Anyways, should you have any ideas or tips for new blog owners please share. I understand this is off topic nevertheless I simply had to ask. Kudos!
Ok- you need some time to understand the basic of blogging.
Having some understanding of CSS, PHP would be helpfull too.
But Workpress ( I’m using 4.1 ) should help you to start quickly.
If you use my menu MISC -> Workpress Details
you can find out my styles.css changes done compared to the original Twenty Twelve Theme
Very helpful
Thank you