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Hello, |
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|
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On Thu, 18 Aug 2022, Dale wrote: |
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>Rich Freeman wrote: |
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>> On Thu, Aug 18, 2022 at 2:04 PM Dale <rdalek1967@×××××.com> wrote: |
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>>> |
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>>> Part. # Size Partition Type Partition Name |
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>>> 1007.0 KiB free space |
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>>> 1 9.1 TiB Linux filesystem 10Tb |
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>>> 1007.5 KiB free space |
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>>> |
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>>> |
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>>> I'm not sure why there seems to be two alignment spots. Is that |
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>>> normal? Already, there is almost 1TB lost somewhere. |
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>> 10 TB = 9.09495 TiB. You aren't missing much of anything. |
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[..] |
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>Well, I realize it would be less than advertised but I just want to |
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>maximize it as much as I can. I found the -m option for the file system |
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>a good while back and it saves a lot on these larger drives. Since this |
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>is a external drive, no point in reserving any root space, since root |
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>will likely never access it after the file system is put on it. |
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|
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Also, if you're using ext2/3/4, there's the preset, i.e. if you're |
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rather sure about what kind of data is going to be on there, you |
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can tune it so that it reserves more or less place for metadata like |
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inodes, which can be another bit. |
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|
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I made some experiments with a temp-repurposed swapfile of 2051M size: |
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|
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Output of 'df -m': |
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1M-blocks Used Available Inodes mke2fs-options used |
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2016 67 1847 131072 -j -t ext4 |
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2016 67 1949 131072 -j -t ext4 -m 0 |
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2048 67 1878 2048 -j -t ext4 -T largefile |
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2048 67 1981 2048 -j -t ext4 -T largefile -m 0 |
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|
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So, defaults uses about 1.7% of the space for metadata, and -T |
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largefile only about 0.15% of the space. Of course, there are rather |
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few inodes with '-T largefile'. But if you want to put basically only |
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some big videos on there, 2048 inodes seems a lot for a mere 2G of |
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space ;) This should scale linearly (in steps) for bigger devices and |
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can amount to quite some more space. |
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|
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Anyway, see /etc/mke2fs.conf, 'man mke2fs' and 'man mke2fs.conf for |
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details. |
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|
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I've done this in the past and got bitten by too few inodes, but you |
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can get around that for "inode-hogs" like news-spools etc. by using a |
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loop-filesystem with different parameters or a different fs. Just |
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beware: reiserfs on reiserfs is a recipie for desaster. |
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|
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HTH, |
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-dnh |
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|
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-- |
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There are two major products that come out of Berkeley: |
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LSD and UNIX. We don't believe this to be a coincidence. |
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-- Jeremy S. Anderson |
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