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fsck

Checking ext3 partitions for disk errors

We can use following command to check ext3 partitions for disk errors / surface scan for bad blocks:

e2fsck -c -c -k -v -C 0 <partition_device_name>

Here:

-c : To call badblocks for surface scan
-c : Repeated to indicate non-destructive read-write tests
-k : Preserve previous list of bad blocks
-v : Verbose
-C 0 : To print progress on file descriptor. For some strange reason 0 causes output to be sent on screen.

Note:

It is advisable to use e2fsck in above format so that it calls 'badblocks' internally, and we should avoid calling program badblocks directly.

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