Date: Fri, 16 Dec 2005 14:08:57 -0600 From: Eric Anderson <anderson@centtech.com> To: Lapo Nustrini <lapo@seanet.com> Cc: Pawel Jakub Dawidek <pjd@freebsd.org>, freebsd-geom@freebsd.org Subject: Re: gconcat Message-ID: <43A31ED9.9090005@centtech.com> In-Reply-To: <0A47F650-AEDC-439D-B5D7-B3FA7C410DB1@seanet.com> References: <8B452D98-4FD5-4755-AB7F-31D278DF33F7@seanet.com> <20051216021759.GA14087@garage.freebsd.pl> <52A581CA-EC39-4C83-8C77-CB373F68D3FB@seanet.com> <20051216163217.GC14985@garage.freebsd.pl> <0A47F650-AEDC-439D-B5D7-B3FA7C410DB1@seanet.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Lapo Nustrini wrote: > On Dec 16, 2005, at 8:32 AM, Pawel Jakub Dawidek wrote: > >> On Fri, Dec 16, 2005 at 08:10:51AM -0800, Lapo Nustrini wrote: >> +> >> +> On Dec 15, 2005, at 6:17 PM, Pawel Jakub Dawidek wrote: >> +> >> +> >On Thu, Dec 15, 2005 at 04:06:08PM -0800, Lapo Nustrini wrote: >> +> >+> >> +> >+> Can anyone tell me whether it is possible to expand a gconcat >> volume (by adding a drive to the end of it) without having to wipe >> the data from the existing set and recreate from scratch? >> +> >+> I don't mind having to manually edit bsdlabels and such. >> Just wondering if its possible at all. >> +> >+> I've been looking for some docs on this but can't seem to >> find a definitive answer. >> +> > >> +> >It should just work be relabeling providers. >> +> >If you did something like: >> +> > >> +> > # gconcat label foo da0 da1 >> +> > >> +> >You can expand it with: >> +> > >> +> > # gconcat label foo da0 da1 da2 da3 >> +> > >> +> >etc. Just be sure the order of old providers is the same. >> +> > >> +> >PS. You'd need to stop device 'foo' first. >> +> > >> +> >> +> This is what I tried: >> +> >> +> # mount /dev/concat/gc0 /mnt >> +> # cp -pr ttt /mnt >> +> # ls -la /mnt >> +> total 8 >> +> drwxr-xr-x 4 root wheel 512 Dec 16 07:49 . >> +> drwxr-xr-x 25 root wheel 1024 Dec 15 15:02 .. >> +> drwxrwxr-x 2 root operator 512 Dec 16 07:48 .snap >> +> drwxr-xr-x 2 lapo wheel 512 Nov 9 22:48 ttt >> +> # umount /mnt >> +> # gconcat stop gc0 >> +> # gconcat label gc0 ad1 ad3 ad4 ad6 ad7 >> +> # mount /dev/concat/gc0 /mnt >> +> # ls -la /mnt >> +> ls: ttt: Bad file descriptor >> +> total 6 >> +> drwxr-xr-x 4 root wheel 512 Dec 16 07:49 . >> +> drwxr-xr-x 25 root wheel 1024 Dec 15 15:02 .. >> +> drwxrwxr-x 2 root operator 512 Dec 16 07:48 .snap >> +> >> +> Am I missing a step? >> +> Thanks! >> >> Are you sure you gave correct order? It works here just fine... >> What was the previous 'gconcat label' command you gave? >> > > I was thought the previous command was, "#gconcat label gc0 ad1 ad3 > ad4" > However, to make sure I tried this again and it does indeed appear to > work. > I do have a further question. > If I create a new volume with: > #gconcat label gc0 ad1 ad3 > Then place a file system on it: > #newfs -U /dev/concat/gc0 > And mount it, the output from "df" will be: > /dev/concat/gc0 15135708 4 13924848 0% /mnt > > If I then umount and stop the gconcat volume, add aother drive to it > with: > #gconcat label gc0 ad1 ad3 ad5 > I can't run newfs on it or I will lose any data, but the output of > "df" will still only show: > /dev/concat/gc0 15135708 4 13924848 0% /mnt > > Is there a way to tell the system the drive is now bigger? Should I > be using bsdlabel / fdisk at some point? You can use growfs to do that. Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology Anything that works is better than anything that doesn't. ------------------------------------------------------------------------
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?43A31ED9.9090005>