Date: Mon, 02 Dec 2013 17:23:20 -0900 From: Peter Giessel <pgiessel@mac.com> To: freebsd-questions@freebsd.org Subject: Re: gmirror, gpart and MBR vs GPT in the Handbook Message-ID: <E0439E56-EE01-4E03-891F-9694811FEF06@mac.com> In-Reply-To: <20131202184642.d35c4548.freebsd@edvax.de> References: <201311301303210813.05DE187E@smtp.24cl.home> <alpine.BSF.2.00.1311301352140.99113@wonkity.com> <201312011121580096.005D00FB@smtp.24cl.home> <alpine.BSF.2.00.1312011016490.5791@wonkity.com> <201312021213320528.00673D5F@smtp.24cl.home> <20131202182623.43331984.freebsd@edvax.de> <201312021235030914.007AF1DF@smtp.24cl.home> <20131202184642.d35c4548.freebsd@edvax.de>
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On 2013, Dec 2, at 8:46, Polytropon <freebsd@edvax.de> wrote: > I think you're correct regarding this finding: The data type 2^32 > (because of 32 bit) defines the 2 TB limit. It applies both on > MBR (which stores 32 bit values) and UFS (which also stores 32 > bit values). However, I've never dealt with disks > 2 TB _and_ > UFS before, so I can't add specific individual findings. :-) UFS works on drives bigger than 3 TB (ref /dev/da1p1 and = /dev/mirror/gm0.journal): [17:20][media: ~]> df -h Filesystem Size Used Avail Capacity Mounted on /dev/da0s1a 247M 216M 11M 95% / devfs 1.0k 1.0k 0B 100% /dev /dev/da1p1 4T 3.6T 82G 98% /media /dev/da0s1e 3.9G 5.1M 3.6G 0% /tmp /dev/da0s1f 7.5G 5.8G 1.1G 84% /usr /dev/da0s1d 3.9G 733M 2.9G 20% /var /dev/mirror/gm0.journal 2.7T 1.8T 645G 74% /media/mythtv [17:20][media: ~]> more /etc/fstab # Device Mountpoint FStype Options Dump = Pass# /dev/da0s1b none swap sw 0 = 0 /dev/da0s1a / ufs rw 1 = 1 /dev/da1p1 /media ufs rw 2 = 2 /dev/da0s1e /tmp ufs rw 2 = 2 /dev/da0s1f /usr ufs rw 2 = 2 /dev/da0s1d /var ufs rw 2 = 2 /dev/mirror/gm0.journal /media/mythtv ufs rw,async 2 = 2 /dev/acd0 /cdrom cd9660 ro,noauto 0 = 0
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