need help with ZFS
Boris Kochergin
spawk at acm.poly.edu
Mon Aug 24 14:17:58 UTC 2009
Mikhail (Plus Plus) wrote:
> Panagiotis Christias wrote:
> > I would suggest you try FreeBSD 8.0 that includes the latest
> version of
>> ZFS (version 13), which fixed several problems present in 7.x. Then,
>> check for crash dumps (see dumpon(8)), collect any available info and
>> sent it to the list.
>>
>
> Does that mean I will have to format my current zpool in order to
> "upgrade" to ZFS v13? And if it is true then another problem is that I
> have to backup current data somewhere before I'll be able to format
> zpool to new version, but I cannot do this because server simply
> crashes every time I try to copy that much of data to another hdd.
>
> Mikhail.
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ZFS version 13 refers to two things: the ZFS code, and the on-disk
format. Most, if not all of your problems will probably be resolved by
upgrading to the new code, as found in 7.2-STABLE and 8.0. New versions
of the code are backwards compatible with old on-disk formats. Should
you decide to upgrade to the new on-disk format with "zfs set version=3"
and "zpool upgrade," the process is documented as keeping your data
intact. While it is always a good idea to back up your data before
potentially-dangerous filesystem operations, I, along with many other
people, have upgraded ZFS on-disk formats without issue.
-Boris
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