INTERVIEW QUESTIONS OPERATING SYSTEMS SOLARIS DETAILS

Question: How to restore a corrupted file system or trouble shoot bad super blocks for a FS c0t2d0s5

Answer: Well you can also just use the #FSCK -N /dev.dsk/c0t2d0s5 to get the back up block number and then using one of the numbers that display #FSCK -F ufs -o b=32 can be executed.

Well you can also just use the #FSCK -N /dev.dsk/c0t2d0s5 to get the back up block number and then using one of the numbers that display #FSCK -F ufs -o b=32 can be executed. Source: CoolInterview.com

#newfs -N /dev/dsk/c1t1d0s0

#fsck -F ufs -o b=75680 /dev/rdsk/c1t1d0s0 Source: CoolInterview.com

get into single user mode from ok prompt by using the command below.
boot -s
use the newfs command to check the number of back ups for the superblock used.
use newfs -N to display the value for /dev/dsk/c1t1d0s0 as below.
newfs -N /dev/dsk/c1t1d0s0
use fsck command to fix the superblocks as below
fsck -F ufs -o b=75680 /dev/rdsk/c1t1d0s0

Now the blocks are replaced get to multiuser mode using init 3
server should boot fine. Source: CoolInterview.com

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