Date: Sat, 14 Apr 2001 20:56:00 +0200 From: Gunnar Isaksson <sm5iuf@telia.com> To: Andrew Hesford <ajh3@chmod.ath.cx> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: FreeBSD filesystem limitations Message-ID: <3AD89D40.4A26450C@telia.com> References: <3AD80959.91CBE6C5@telia.com> <20010414102435.A91157@cec.wustl.edu>
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Andrew Hesford wrote: > > On Sat, Apr 14, 2001 at 10:24:57AM +0200, Gunnar Isaksson wrote: > > I have no memory of any filesize limitation on > > FreeBSD and would like to know if there is anything > > similar to the Linux 2GB limit? > > Okay, after posting my last response, I found this interesting tidbit of > information from http://www3.au.freebsd.org/FAQ/install.html: > > The maximum theoretical filesystem size limitation is 2 gigablocks. > Thus, with the default block size of 8K, this is 16TB. With a 4K block > size (this is the smallest possible, I think) this works out to 8TB. In > practice, there is a soft limit (I'm not sure what this means) of 1TB, > although modifications can yield 4TB filesystems, which do exist. > > The maximum file size on an FFS filesystem is approximately 1 > gigablocks, or half the maximum filesystem size. With the smallest > possible block size (4K), this means you have 4TB files, and with a > default 8K block size, you can get 8TB files. > > I wonder how long it takes to dd one of those from /dev/urandom. > Thanks Andrew for the info and your time. The filesize limitation on 8TB has really escaped me since no one talks about it. Nobody talks about a nonissue :-) It really looks beneficial to switch my server into FreeBSD due to this smarter filesystem. I have strong and nice memories about the port collection in FreeBSD. Just cd into /usr/ports/.. and then type make. Now when having ADSL connection at home I should be able to marvel at the ports collection again. //Gunnar Isaksson To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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