Date: Wed, 6 Feb 2013 19:10:24 +0100 From: Polytropon <freebsd@edvax.de> To: Paul Schmehl <pauls@utdallas.edu> Cc: FreeBSD Questions List <freebsd-questions@freebsd.org> Subject: Re: How to add unused space to an existing install Message-ID: <20130206191024.e556d840.freebsd@edvax.de> In-Reply-To: <47D0E9AD1EEAC6058A534838@utd71538.campus.ad.utdallas.edu> References: <47D0E9AD1EEAC6058A534838@utd71538.campus.ad.utdallas.edu>
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On Wed, 06 Feb 2013 11:58:56 -0600, Paul Schmehl wrote: > When I try to create a new slice using fdisk, it doesn't seem to work. If > I move to the label editor, I get this: > > FreeBSD Disklabel Editor > > Disk: mfid0 Partition name: mfid0s1 Free: 0 blocks (0MB) > > Part Mount Size Newfs Part Mount Size Newfs > ---- ----- ---- ----- ---- ----- ---- ----- > mfid0s1a <none> 2000MB * > mfid0s1d <none> 65536MB * > mfid0s1e <none> 4096MB * > mfid0s1b swap 65536MB SWAP > mfid0s1f <none> 10240MB * > mfid0s1g <none> 601GB * > > As you can see mfid0s1g is 601GB, and according to fstab that's /var. > > Yet df -h shows: > > # df -h > Filesystem Size Used Avail Capacity Mounted on > /dev/mfid0s1a 1.9G 726M 1.0G 41% / > devfs 1.0k 1.0k 0B 100% /dev > /dev/mfid0s1e 3.9G 38M 3.5G 1% /home > /dev/mfid0s1d 62G 6.6M 57G 0% /tmp > /dev/mfid0s1f 9.7G 7.5G 1.4G 84% /usr > /dev/mfid0s1g 582G 39G 496G 7% /var > > So apparently I'm not creating this new slice? It should be /dev/mfid0s1h, > correct? If you're creating a new slice, that would be mfid0s2, because mfid0s1 is the 1st slice ("DOS primary partition") carrying the partitions a, swap, d, e, f, g. If I remember correctly, h is the last partition letter that can be assigned, so this one should be available. Problem: The 1st slice mfid0s1 is already of fixed size, so you cannot add a new partition here without growint that slice first. Attention, that step isn't free of danger and should be done with a backup at hand, just in case, and because you _always_ need a backup. :-) This problem is not a problem if you create a 2nd slice mfid0s2 to use it separately. If you can _really_ create mfid0s2 as a slice, you only need to format it, e. g. "newfs -U /dev/mfid0s2" which creates mfid0s2c which in turn is called mfid0s2). You can then assign that new partition (the one covering the whole slice) to a new mountpoint, e. g. /data, /stuff or whatever you want. There are also means to "merge" this partition into some mountpoint that is already occupied, e. g. /home, maybe via "mount -o union" including all possibly negative consequences). > How to I "recapture" the remaining 2+TB of space that's not being used? Without wiping the whole disk(s)? -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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