On Sat, Feb 19, 2005 at 04:16:37PM -0600, Eric Anderson wrote: > Wilko Bulte wrote: > >On Fri, Feb 18, 2005 at 09:12:16AM -0600, Eric Anderson wrote.. > > > >>Matthew Jacob wrote: > >> > >>>BTW- be careful with very large filesystems on FreeBSD- at some point > >>>fsck can't check them. > >>> > >>>I built a sparse 5000TB filesystem which newfs'd and mounted okay, but > >>>was not possible to check with fsck. > >> > >>5000TB?!?! How did you do that? > > > > > >Note the word 'sparse' :) > > > That doesn't explain it much.. Is there a doc on how to create these sparse > filesystems? Creating sparse files, e.g. by using dd, is prety much unix basics. And via md(4) you can get a disk type device from a file. testdisk=/tmp/testdisk dd if=/dev/zero bs=512 count=1 oseek=2m of=${testdisk} mdev=`mdconfig -a -t vnode -f ${testdisk}` I don't know if md(4) works with such large disks, but it's very likely that is does. -- B.Walter BWCT http://www.bwct.de bernd_at_bwct.de info_at_bwct.deReceived on Sat Feb 19 2005 - 23:05:26 UTC
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