Date: Wed, 8 Jul 2020 20:10:58 -0500 From: Valeri Galtsev <galtsev@kicp.uchicago.edu> To: freebsd-questions@freebsd.org Subject: Re: Are there any real advantages of ext4 over ext2 ? Message-ID: <87d3cc8d-7cba-1024-6708-6ffbc3d7b0ab@kicp.uchicago.edu> In-Reply-To: <20200708215903.73fe7f9b.freebsd@edvax.de> References: <DB8PR06MB64426C4BB725C23C544C6E3AF6670@DB8PR06MB6442.eurprd06.prod.outlook.com> <20200708215903.73fe7f9b.freebsd@edvax.de>
next in thread | previous in thread | raw e-mail | index | archive | help
On 7/8/20 2:59 PM, Polytropon wrote: > On Wed, 8 Jul 2020 23:40:12 +0530, Manish Jain wrote: >> I have a dual boot computer with FreeBSD and Linux. >> >> My Linux partitions are ext4 simply because ext4 is now the default >> under Linux. However, ext4 is not supported directly by FreeBSD. As a >> result, writing to those filesystems from FreeBSD is painfully slow (via >> fuse). >> >> It is notable that ext2fs is directly supported by FreeBSD. > > You are talking about different levels of support - by the > kernel or by a kernel module, for read-only or read/write. > > > >> ext4 supports huge files (in terra bytes) [...] > > Prefix: tera. Tera, 10^12 != terra, earth. ;-) > No, no, that was really fun to read! I for one make fun a bit differently, when it is realy large munber of TBs I say: Terror-bytes ;-) Valeri > > >> [...] and filesystems (in thousands >> of peta bytes). But very few people have such files/filesystems. At >> least, don't - my use case is max 64 GB file, max 500 GB filesystem. > > If you have such a case, ext4 is possibly an option, but there > are other filesystems that might be better suited to hold > extremely large files withing even larger filesystems. > > > >> So I wonder are there any real advantages of ext4 over ext2 ? > > In my experience, ext4 is more stable than ext2, and therefore > can cope with potential filesystem problems better. Furthermore, > it's more recent, so it's not entirely impossible that ext2 > support will be removed sometimes in the future. > > However, for the case of a "data exchange partition to be used > for FreeBSD and Linux in read/write mode", ext2 can definitely > be called a lowest common denominator. That doesn't mean it is > superior to more recent native filesystems, but for _that_ case, > it surely is a valid choice. > > > -- ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?87d3cc8d-7cba-1024-6708-6ffbc3d7b0ab>