Timeline for how much space to reserve on ext3 filesystem to prevent fragmentation issues?
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
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| Aug 30, 2012 at 10:36 | comment | added | boehj | To be honest I think it depends solely on usage. On a pure storage partition you could go with none. On a regular system partition you could use 20 000. On some production server partitions it may still be useful to use 5% as it will allow root a lot of room to write to. | |
| Aug 27, 2012 at 18:18 | comment | added | SaultDon | @boehj Dang, I was trying to figure it out because I'm not sure if you need to change the size relative to the HD size; does a 1TB HD need more space than a 100GB HD/Partition or does it depend on the disk usage (storage, root fs, home, boot, etc...) | |
| Aug 22, 2012 at 12:24 | comment | added | boehj | Actually I can't really. I used that example because when I learnt about the process, that was the example quoted in the guide. And subsequent to that I've used this number on quite a few systems and had no problems. Perhaps someone else can add some info? | |
| Aug 21, 2012 at 21:44 | comment | added | SaultDon | @boehj Can you explain a little on how you decided on the amount of blocks reserved (20000) for root when the drive is primarily used for storage? Is that something that is relative to the size of the drive, amount of files, file sizes, etc? | |
| Apr 19, 2011 at 16:18 | comment | added | user732 | But let's be clear: ext3 fragmentation isn't at all the same as NTFS fragmentation. ext3 allocates disk blocks to files as individual blocks. NTFS allocates disk blocks in extents. A "fragmented" NTFS file can have multiple inode-equivalents full of very small extents of disk blocks. | |
| Apr 19, 2011 at 14:52 | comment | added | udo | ok, that clears it pretty much. thank you! a statement like if you run for long periods of time (with lots of file creates and deletes) while the filesystem is almost full (i.e., say above 95%), at which point you'll be subject to fragmentation problems. is exactly what I was looking for. | |
| Apr 19, 2011 at 14:44 | vote | accept | udo | ||
| Apr 19, 2011 at 14:38 | history | edited | boehj | CC BY-SA 3.0 | slightly more info and a quote; deleted 6 characters in body |
| Apr 19, 2011 at 14:28 | history | answered | boehj | CC BY-SA 3.0 |