Date: Sat, 11 Apr 2015 11:15:38 +0300 From: Sami Halabi <sodynet1@gmail.com> To: Steven Hartland <killing@multiplay.co.uk> Cc: freebsd-fs@freebsd.org Subject: Re: Migrating ZFS from 8.3 to 10.1 Message-ID: <CAEW%2BogbLJgYkrZFEDwKNRRJSJNiQu=_Sy2UXimyNq%2BKORBvJVw@mail.gmail.com> In-Reply-To: <552857B8.6040001@multiplay.co.uk> References: <CAP1HOmSwTw_pd_UUu9BcwUe2eeG5Uxv7O5iK62S_Mcb-WKzmPg@mail.gmail.com> <552857B8.6040001@multiplay.co.uk>
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hi, Its worth mentioning that in 10 ZFS allocates few% (?) of disk space as reserved for fs uses that wasn't in 8/9, so if you have small ammount of free space you might end up in an full system with no free space. Sami =D7=91=D7=AA=D7=90=D7=A8=D7=99=D7=9A 11 =D7=91=D7=90=D7=A4=D7=A8=D7=B3 2015= 02:07,=E2=80=8F "Steven Hartland" <killing@multiplay.co.uk> =D7=9B=D7=AA=D7=91: > We did moved from 8.3 -> 10.1 had to go via 10.0 as we did a in place > source upgrade but had no issues. > > 10.x has block size validation which 8.3 so if your disks are 4k sectors > and you didn't manually configure this on install you may end up with poo= ls > complaining about this, but that will just mean reduced performance > (something you had already). > > Yes once your happy 10.1 is working fine you should upgrade your pools to > get all the new features which are well worth having. > > Regards > Steve > > On 10/04/2015 22:43, javocado wrote: > >> Hello, >> >> I am planning to migrate (upgrade) my system from FreeBSD 8.3 RELEASE to >> 10.1 RELEASE (both amd64). My zfs pool exists on it's own physical >> device(s) so my upgrade will consist of: >> >> 1. install FreeBSD 10.1 on boot device (in a temp system) >> 2. remove 8.3 boot device (from production system) >> 3. install new 10.1 boot device and boot up production system >> 4. re-mount zfs FS >> >> My question is, what do I need to know about how this change will affect >> or >> impact the zpool and datasets? Is there any chance zfs data could be los= t >> or destroyed? Might there be a performance loss due to version >> differences? >> Is upgrading the zpool (once booted to 10.1) strongly advised? Any >> downsides or dangers there? >> >> Some other info worth considering (production system): >> >> ZFS filesystem version 5 >> ZFS storage pool version 28 >> >> Thanks! >> _______________________________________________ >> freebsd-fs@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-fs >> To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" >> > > _______________________________________________ > freebsd-fs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" >
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