-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Wednesday, 2014-07-02 at 11:57 -0400, Greg Freemyer wrote:
On Wed, Jul 2, 2014 at 11:15 AM, Carlos E. R. <> wrote:
Resistant, yes, but not immune. fsck tells you the amount. I have seen Linux machines heavily fragmented. Look:
ext4 uses a max of 128 MB block extensions. For large files that are pre-allocated the individual block extensions should be the full 128 MB if possible. It is unlikely all the block extensions will be contiguous from what I understand.
In that particular example, most of the files are 65 MB, with matching index files of about 3 to 5 KB, on an external disk via USB, and it is ext2 (not 2 nor 4, and not a choice; the alternative is FAT). It is a multimedia box of limited cpu power. I just gave it as an example of a machine where heavy fragmentation occurs. On normal Linux machines, the percent is about 2, IIRC. For instance: Telcontar:~ # fsck -f /dev/sdc9 fsck from util-linux 2.23.2 e2fsck 1.42.8 (20-Jun-2013) Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information a_test2: 230470/1313280 files (0.1% non-contiguous), 3297636/5242880 blocks Telcontar:~ # - -- Cheers, Carlos E. R. (from 13.1 x86_64 "Bottle" at Telcontar) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iEYEARECAAYFAlO1J2kACgkQtTMYHG2NR9XhpACfasIw+gOv6dcT5AxlYrLZHe4d bJUAn2Q+W5dst8imB/0VyDQ3/bITYOx7 =sI1+ -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org