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I had a disk with a full size NTFS partition. I just deleted it and created an EXT4 one.

When it was NTFS, if it wasn't in use (mount but no in use) it was quiet. However now, using EXT4, it is constant reading and I don't know why.

Using EXT3 is fine also.

Any idea?

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1 Answer 1

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you can try to use iostat and iotop to observe processes perfoms io. Also you can turn on io logging echo 1 > /proc/sys/vm/block_dump to examine what happen more clearly

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Being in idle: sdb1 is constantly writing 2-3M/s associated to [jbd2/sdb1-8]. However sda1 only writes a few K when the process [jbd2/sda3-8] triggers. –  yzT Jan 9 '13 at 16:29
    
What is your mount | egrep "sdb1|sda1". It seems that you need to change commit for monted partition. –  dchirikov Jan 9 '13 at 16:52
    
I left it 1h in idle, and now when I came back it is working as usual, without be writing all the time. Maybe it was indexing or something after format? But indexing what if it had nothing? –  yzT Jan 9 '13 at 18:15

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