Date: Thu, 22 Jul 2010 08:59:53 +0100 From: krad <kraduk@googlemail.com> To: Adam Vande More <amvandemore@gmail.com> Cc: Aiza <aiza21@comclark.com>, freebsd-questions@freebsd.org, Vincent Hoffman <vince@unsane.co.uk> Subject: Re: new jail utility is available. announcement. Message-ID: <AANLkTilfiCcCU4mqHwBPydloSUOLHaaA7v8Ksiipv0WE@mail.gmail.com> In-Reply-To: <AANLkTimfo5MSIExd0NvmTnjCRgBFi26h0nRVF0tgJgty@mail.gmail.com> References: <4C452644.6060508@comclark.com> <20100720134205.3168f4f1@scorpio> <4C45EA1C.6070601@comclark.com> <20100720153209.74ec26e6@scorpio> <4C45FCE1.7010006@comclark.com> <20100720163651.0daf727d@scorpio> <AANLkTine1n4rMfnWd-oiQHe1PY2mBtGDpMdGgI_W0TR4@mail.gmail.com> <4C46BAAD.5000507@unsane.co.uk> <4C46C356.6000101@comclark.com> <AANLkTimfo5MSIExd0NvmTnjCRgBFi26h0nRVF0tgJgty@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On 22 July 2010 02:16, Adam Vande More <amvandemore@gmail.com> wrote: > On Wed, Jul 21, 2010 at 4:52 AM, Aiza <aiza21@comclark.com> wrote: > > > > > Not yet, when I have a spare box I might, although I quite like using > >> zfs for jails as you can limit the disk usage dynamically per zfs > >> filesystem and I didnt see any support there yet, even basic support > >> like there is with ezjail would be nice. > >> > >> > > Zfs was left out because its over kill. Sparse image jails gives the same > > protection at a 10th of the overhead. > > > You didn't factor in slowness due to having a file-backed filesystem. > While > probably pretty low, it's definitely there and not good in an io heavy > jail. Also, the host will have to mount a UFS based FS, and cache it so > you're going to have increased memory usage. > > Ideal setup for an io intensive jaill(eg database) is to be bound to > compressed ZFS file-system, not a sparse image located on such a setup. > > even better when we get zfs v22 as we will have dedup. THat has its own memory issues though. > I'm not sure what overhead you're referring too. If it's hard to tie into > your application, you are probably correct, but from a host perspective you > are increasing overhead. > > There are advantages to sparse or raw file as well, it would be nice to > have > a choice. > > -- > Adam Vande More > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to " > freebsd-questions-unsubscribe@freebsd.org" >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?AANLkTilfiCcCU4mqHwBPydloSUOLHaaA7v8Ksiipv0WE>