Date: Mon, 9 May 2011 03:52:49 -0700 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: Robert Schulze <rs@bytecamp.net> Cc: freebsd-fs@freebsd.org Subject: Re: zfs/zpool upgrade required? Message-ID: <20110509105249.GA58361@icarus.home.lan> In-Reply-To: <4DC7C522.3070601@bytecamp.net> References: <4DC13260.4020905@bytecamp.net> <20110504115540.GA88625@icarus.home.lan> <4DC7C522.3070601@bytecamp.net>
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On Mon, May 09, 2011 at 12:42:42PM +0200, Robert Schulze wrote: > Am 04.05.2011 13:55, schrieb Jeremy Chadwick: > >>Is it _required_ to upgrade existing pools and filesystems or can > >>that be done anytime later? > > > >- It can be done later, though by not upgrading you lose the ability to > >use newer features. > > well, the features are not the reason to upgrade the kernel. One > more question: could the pools and filesystems be upgraded while > there is pressure on them, or shall this procedure be made > "offline", i.e. without any clients accessing the machine? It can be done while I/O requests are being handled. Depending on pool size, amount of data, etc. the "upgrade" commands may take some time, though. If you're worried about customer/client impact, you'd best schedule downtime/a maintenance window. -- | Jeremy Chadwick jdc@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP 4BD6C0CB |
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