fsck reports errors on clean filesystem (mounted rw)

Chuck Swiger cswiger at mac.com
Fri Sep 10 23:04:26 UTC 2010

On Sep 10, 2010, at 3:27 PM, cronfy wrote:
> 1. Can I be sure my filesystem is consistent?


> 2. If fsck reports nonexistent errors (and probably will try to fix
> them if asked), isn't it even danger to run fsck on running system?

Running fsck in foreground mode on a mounted filesystem is not recommended.  

> 3. How can I check (not fix) filesystems while partitions are mouted
> rw and are under usage?

fsck -B...?  See "man fsck_ffs".


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