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PCLinuxOS-Forums > Help > Hard Drive Installation > ext4 block size
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Ferdes Fides
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In theory, theory=practice, in practice ???
« on: October 19, 2010, 02:57:49 PM »

Hello,

Looked around in system info (Xfce) but still cannot determine the block size for the
default ext4 installation I made.  That is supposed to determine the max file size ext4
can handle. 

What is the default block size we use ?


thanks for your response,

patrick013
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uncleV
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« Reply #1 on: October 19, 2010, 04:32:07 PM »
Wikipedis says
Ext4
Quote
Max file size  -  16 TiB (for 4k block filesystem)

 Undecided
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Ferdes Fides
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In theory, theory=practice, in practice ???
« Reply #2 on: October 19, 2010, 05:43:33 PM »
Quote from: uncleV on October 19, 2010, 04:32:07 PM
Wikipedis says
Ext4
Quote
Max file size  -  16 TiB (for 4k block filesystem)

 Undecided



So somewhere between 16gb and 16tb there's a blocksize factor.   I wonder where that chart is,
and our installation default blocksize.   Are we at 4k and 16tb or 1k and 16gb ?    Still looking.


regards,

patrick013
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muungwana
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« Reply #3 on: October 19, 2010, 06:07:02 PM »

type this command as root on the terminal and it should give you what you want to know

dumpe2fs /dev/ABCD | grep -i "block size"

where "ABCD" is the device node address like sda5, sdb6, hda4 etc

i am getting 4096(4KiB) here.
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Ferdes Fides
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In theory, theory=practice, in practice ???
« Reply #4 on: October 19, 2010, 06:37:25 PM »

Thanks a bunch,

Then we must be at 4k and 16tb default, which is relaxing as I might have 500gb partition size possibly, and who knows what backup file size, might be or more in the future.
Wonder why I ever tried xfs then.

patrick013
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