kern/138244: dd attempts bitwise transfer onto ZFS pool
Weldon S Godfrey 3
weldon at excelsusphoto.com
Fri Sep 11 14:24:29 UTC 2009
Sorry, I lost the reply to this
the command was:
dd if=/dev/zero of=/export/store1-1 bs=64k count=10000
the 'of' was an accident, it was meant to be to a file and not the
here is the df
tank/store1-1 2882037632 1161418880 1720618752 40%
sorry, I didn't execute this and I misunderstood what happened. I
thought the 'of' was to tank/store1-1 so this may not be
such an issue.
I personally never tested to see if you use the mountpoint
instead of the /dev special file (or zfs volume in this case) with the 'of
argument in dd, would dd treat the mountpoint as if it was the /dev
however, the result was understood correctly, it zeroed out the dir, it
appeared in FreeBSD as if it was blank. I tried to do a rollback but that
caused the system to panic. Which turned out to be great, the system came
back fine (not zeroed out) and not rolled back (as it was before the dd
comand was executed).
sorry, this may not be an issue at all. we are happy that zfs didn't kill
the data on this accident.
going to just /export/store1-1 was an accident
If memory serves me right, sometime around Aug 27, FreeBSD-gnats-submit at Fre...:
> Thank you very much for your problem report.
> It has the internal identification `kern/138244'.
> The individual assigned to look at your
> report is: freebsd-bugs.
> You can access the state of your problem report at any time
> via this link:
>> Category: kern
>> Responsible: freebsd-bugs
>> Synopsis: dd attempts bitwise transfer onto ZFS pool
>> Arrival-Date: Thu Aug 27 19:00:09 UTC 2009
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