On 12/31/2010 6:47 PM, Jeremy Chadwick wrote:
On Sat, Jan 01, 2011 at 10:33:43AM +1100, Peter Jeremy wrote:
Based on my experiences at home, I converted my desktop at work to
pure ZFS. The only issues I've run into have been programs that
extensively use mmap(2) - which is a known issue with ZFS.
Is your ZFS root filesystem associated with a pool that's mirrored or
using raidzX? What about mismatched /boot content (ZFS vs. UFS)? What
about booting into single-user mode?
http://wiki.freebsd.org/ZFSOnRoot indirectly hints at these problems but
doesn't outright admit them (yet should), so I'm curious to know how
people have solved them. Remembering manual "one-offs" for a system
configured this way is not acceptable (read: highly prone to
error/mistake). Is it worth the risk? Most administrators don't have
the tolerance for stuff like that in the middle of a system upgrade or
what not; they should be able to follow exactly what's in the handbook,
to a tee.
There's a link to www.dan.me.uk at the bottom of the above Wiki page
that outlines "the madness" that's required to configure the setup, all
of which has to be done by hand. I don't know many administrators who
are going to tolerate this when deploying numerous machines, especially
when compounded by the complexities mentioned above.
This basically outlines the reason why I do not use ZFS on root.
--
Dan Langille - http://langille.org/
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