Date: Tue, 16 May 2006 10:17:46 -0700 From: "Gayn Winters" <gayn.winters@bristolsystems.com> To: =?iso-8859-1?Q?'Nagy_L=E1szl=F3_Zsolt'?= <nagylzs@freemail.hu>, <freebsd-questions@freebsd.org> Subject: RE: gmirror and partitioning Message-ID: <021701c6790c$a9d784c0$6501a8c0@workdog> In-Reply-To: <4469EF54.9040802@freemail.hu>
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> From: Nagy L=E1szl=F3 Zsolt [mailto:nagylzs@freemail.hu]=20 > Sent: Tuesday, May 16, 2006 8:27 AM > To: gayn.winters@bristolsystems.com; freebsd-questions@freebsd.org > Subject: Re: gmirror and partitioning >=20 >=20 >=20 > > Laszlo, > > > > You're making gmirror way too difficult. In short, install=20 > FreeBSD with > > however many partitions you want, then install gmirror and replicate > > your disk to the second disk. > > > > The standard howto documents are: > > > > http://dannyman.toldme.com/2005/01/24/freebsd-howto-gmirror-system/ > > > > http://www.onlamp.com/pub/a/bsd/2005/11/10/FreeBSD_Basics.html > > > > http://people.freebsd.org/~rse/mirror/ > > > > I've used Danny's and Ralf's (the first and third). =20 > Danny's is simpler, > > but Ralf's has the advantage that it can be done remotely. Danny's > > website now recommends Dru's (the second). You may want to try that > > first. > > > > Let us know how it goes, > > =20 > I tried the second link, as you suggested. It does not work for me. I=20 > have to identical disks on /dev/ad10 and /dev/ad8. I have installed=20 > FreeBSD on /dev/ad10 and I initialized gmirror on that disk. Here is=20 > what df says: >=20 > backupserver# df -h > Filesystem Size Used Avail Capacity Mounted on > /dev/mirror/gm0s1a 4.8G 34M 4.4G 1% / > devfs 1.0K 1.0K 0B 100% /dev > /dev/mirror/gm0s1e 9.7G 12K 8.9G 0% /tmp > /dev/mirror/gm0s1f 115G 261M 106G 0% /usr > /dev/mirror/gm0s1d 9.7G 232K 8.9G 0% /var > backupserver# swapinfo > Device 1K-blocks Used Avail Capacity > /dev/mirror/gm0s1b 5242880 0 5242880 0%Bristol Systems Inc. 714/532-6776 www.bristolsystems.com=20 > backupserver# >=20 >=20 > Then I try to add the ad8 device: >=20 > backupserver# gmirror insert gm0 /dev/ad8 > Provider ad8 too small. > backupserver# >=20 > But of course this is not true. ad8 and ad10 are identical=20 > 160GB SATA disks. > What am I doing wrong? Please help. >=20 > Laszlo Hi Laszlo, Well it looks like you've got gm0 up and running. I assume you've edited /etc/fstab so that it boots cleanly. My first thought is that you need to zero ad8 to make sure gmirror isn't confused. Try that (dd if=3D/dev/zero of=3D/dev/ad8) at least for several blocks. Then reboot = and post dmesg. -gayn =20
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