From salinjos@nospam.net Wed Nov 4 22:07:55 PST 1998 Article: 147212 of comp.unix.solaris From: "an U.S.A. (Unix Sys Admin)" Newsgroups: comp.unix.solaris Subject: Re: Growing a filesystem Date: Tue, 20 Oct 1998 12:48:57 +0100 Organization: Merrill Lynch Lines: 77 Message-ID: References: <37529B089FFA8A4A.A7F25E960EB4CDAD.0DE965B52891708C@library-proxy.airnews.net> NNTP-Posting-Host: jemima.uk.ml.com Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Sender: salinjos@jemima In-Reply-To: Path: news1.meer.net!news3.best.com!news1.best.com!feed1.news.rcn.net!rcn!dca1-hub1.news.digex.net!digex!news-peer-east.sprintlink.net!news.sprintlink.net!psinntp!news.ml.com!jemima!salinjos Xref: news1.meer.net comp.unix.solaris:147212 On 20 Oct 1998, Thomas Tornblom wrote: > "Olaf" writes: > > > How do you grow a file system? This is a standard ufs system created using > > newfs. Originally, I partitioned 1gb of a 4gb disk, and did newfs on the > > slice. We needed more room so I allocated the whole 4gb to the slice using > > format. > > > > I understand that > > > > mkfs -G -M /dev/dsk/c0t2d0s0 > > > > will allow me to grow a mounted partition, but what do I need to put in > > after the device? > > > > Thanks > > > > olaf@texas.net > > > > > > You need to use: > /usr/lib/fs/ufs/mkfs > The argument to "-M" should be the mountpoint of the filesystem. > The device should be the raw device (/dev/rdsk/c0t2d0s0) > And "" is the number of blocks. > Check with "prtvtoc /dev/rdsk/c0t2d0s0" or "format c0t2d0" > > An example: > > From df -k: > > /dev/dsk/c0t1d0s0 963158 905380 0 100% /cdr > > Lets say I managed to give this more blocks at the end and I want to > grow the filesystem: > > # prtvtoc /dev/rdsk/c0t1d0s0 > [.....] > > * First Sector Last > * Partition Tag Flags Sector Count Sector Mount Directory > 0 2 00 0 2051280 2051279 /cdr > -----------------------------------^^^^^^^ > 2 5 01 0 2052288 2052287 > > I see that the partition is 2051280 sectors. > > The command line would be: > > /usr/lib/fs/ufs/mkfs -M /cdr /dev/rdsk/c0t1d0s0 2051280 > > The "-M" implies "-G". "-G" is used when the filesystem is not mounted. > > I would not try this on the / filesystem while the system is in multiuser. > Hold on, hold on! the options you mention are not documented in the man pages (-M -G) so could you explain what is this all about (do they work but are they not documented?) Cheers. > -- > > Thomas Tornblom Tel: +46 8 623 9100 E-mail: Thomas.Tornblom@Sun.SE > Sun Microsystems AB Fax: +46 8 623 9102 > > --------------------------------------------------- To send e-mail please remove the anti-spam and use: my username: jlms my mailbox sits in: geocities.com From Casper.Dik@Holland.Sun.Com Mon May 3 22:19:32 PDT 1999 Article: 174357 of comp.unix.solaris From: Casper.Dik@Holland.Sun.Com (Casper H.S. Dik - Network Security Engineer) Newsgroups: comp.unix.solaris Subject: Re: Solaris 7, what is /space used for? Date: 15 Apr 1999 19:50:24 GMT Organization: Sun Microsystems, Netherlands Message-ID: References: <371638f8.2761210@newshost.neosoft.com> NNTP-Posting-Host: room101.holland.sun.com Mail-Copies-To: never Lines: 64 Path: news1.meer.net!news3.best.com!news2.best.com!news.maxwell.syr.edu!dispose.news.demon.net!demon!btnet-peer!btnet-feed2!btnet!carbon.eu.sun.com!uk-usenet.uk.sun.com!nl-usenet.holland.sun.com!not-for-mail Xref: news1.meer.net comp.unix.solaris:174357 [[ PLEASE DON'T SEND ME EMAIL COPIES OF POSTINGS ]] jmcknigh@bindview.com writes: >I see a /space on my Sol 7 workstation. It seems to have a lot of >space inside of it. How can I allocate this space to my root >directory? >nero% df -k >Filesystem kbytes used avail capacity Mounted on >/proc 0 0 0 0% /proc >/dev/dsk/c0t0d0s0 1984230 1835031 89673 96% / >fd 0 0 0 0% /dev/fd >swap 304184 968 303216 1% /tmp >/dev/dsk/c0t0d0s3 6484885 9 6420028 1% /space This is actual possible, since you have only two partitions and we're assuming the root partition is first. You can only grow the partition, so be careful: swap -d umount /space format repartition the disk move swap to the end delete partition s3 add the extra space to root NOTE THE SIZE OF THE NEW PARTITION IN BLOCKS!! label run growfs; this is the tricky bit: - kill process accounting - kill most daemons (syslogd, sendmail, etc) have two windows with root. W1# lockfs -w / W2# /usr/lib/fs/ufs/mkfs -M / -G #number of blocks seen above the second command will hang at with point you type the following in W1#: W1# lockfs -u / then reboot. Worked for me. You might want to do all this when booted from CD, though. And you want to have a backup handy. Casper -- Expressed in this posting are my opinions. They are in no way related to opinions held by my employer, Sun Microsystems. Statements on Sun products included here are not gospel and may be fiction rather than truth.