HAMMER filesystem check / CRC verification

PeerCorps Trust Fund ipc at peercorpstrust.org
Fri Jan 22 06:59:46 PST 2016

Hi All,

In ZFS, the command "zpool status" gives a succinct overview of the status of mounted file systems. In particular, whether there might be checksum errors on files or other data structures. 

        NAME        STATE     READ WRITE CKSUM
        tank        ONLINE       0     0     0
          ada0p2    ONLINE       0     0     0

In HAMMER the "show" command provides an extremely detailed output of all data structures and CRC verifications.

I've used the command:

hammer -f /dev/serno/disk-serial-number show |grep B------

On a mounted disk and the output was clean (nothing) after running for some time with noted disk activity. Does this mean that all CRCs are valid? Are there other commands in addition to "show" that allow for validation and examination of data structures on HAMMER volumes?


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