Date: Fri, 26 Jan 2007 15:12:46 -0600 From: "Rick C. Petty" <rick-freebsd@kiwi-computer.com> To: Pawel Jakub Dawidek <pjd@FreeBSD.org> Cc: freebsd-geom@FreeBSD.ORG Subject: Re: clear metadata using dd? Message-ID: <20070126211246.GA72967@keira.kiwi-computer.com> In-Reply-To: <20070126195429.GA64218@garage.freebsd.pl> 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>
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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/disk I/O > > for a number of hours. Apps using GNOME/GTK are almost non-responsive, and > > forget about even using java/eclipse. I haven't found a good way to tune > > gmirror's sync. [...] > > Have you tried setting kern.geom.mirror.sync_requests to 1? 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. > > [...] I also wish you could pause the sync, restart, and unpause > > it where it left off. [...] > > It should just work. When you reboot during the sync process it should > continue after the reboot from the place it stopped. 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. -- Rick C. Petty
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