Date: Sat, 27 Jan 2007 00:54:09 +0100 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: "Rick C. Petty" <rick-freebsd@kiwi-computer.com> Cc: freebsd-geom@FreeBSD.ORG Subject: Re: clear metadata using dd? Message-ID: <20070126235409.GB64218@garage.freebsd.pl> In-Reply-To: <20070126211246.GA72967@keira.kiwi-computer.com> References: <20070126055929.GA56183@keira.kiwi-computer.com> <915325.15953.qm@web30303.mail.mud.yahoo.com> <20070126191413.GA70473@keira.kiwi-computer.com> <20070126195429.GA64218@garage.freebsd.pl> <20070126211246.GA72967@keira.kiwi-computer.com>
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--BwCQnh7xodEAoBMC Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jan 26, 2007 at 03:12:46PM -0600, Rick C. Petty wrote: > On Fri, Jan 26, 2007 at 08:54:30PM +0100, Pawel Jakub Dawidek wrote: > > On Fri, Jan 26, 2007 at 01:14:14PM -0600, Rick C. Petty wrote: > > > On Fri, Jan 26, 2007 at 05:57:23AM -0800, R. B. Riddick wrote: > > > However, I'm not a big fan of the priority placed on the I/O to sync = the > > > disks. Pretty much during a resync, the box is unusable for file/dis= k I/O > > > for a number of hours. Apps using GNOME/GTK are almost non-responsiv= e, and > > > forget about even using java/eclipse. I haven't found a good way to = tune > > > gmirror's sync. [...] > >=20 > > Have you tried setting kern.geom.mirror.sync_requests to 1? >=20 > I've fiddled with all of kern.geom.mirror.* knobs. I have no idea what > these knobs do (although I've made educated guesses), and the man page is > quite lacking. Maybe we should also introduce some delay between sync operation when there are other requests in the queue... > > > [...] I also wish you could pause the sync, restart, and unpause > > > it where it left off. [...] > >=20 > > It should just work. When you reboot during the sync process it should > > continue after the reboot from the place it stopped. >=20 > I have *never* seen this behavior, and I have restarted mid-sync a number > of times. After each time, "gmirror status" reports 0% complete. I've > tried this on 5.4, 5.5, 6.0, 6.1, but not 6.2 yet. Works just fine here: # gmirror label foo ad4d # gmirror insert foo ad6d <wait a bit> # gmirror status Name Status Components mirror/foo DEGRADED ad4d ad6d (10%) # reboot # gmirror load # gmirror status Name Status Components mirror/foo DEGRADED ad4d ad6d (11%) --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --BwCQnh7xodEAoBMC Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFFupShForvXbEpPzQRAjVjAKDB40K9SEx1WS7EvDGShE5YiLSc/wCeMmA9 D33wOKaMX6cENI8eKZkckGQ= =RMNR -----END PGP SIGNATURE----- --BwCQnh7xodEAoBMC--
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