* Resize, off by 1024 bytes
@ 2012-09-24 19:43 Lluís Batlle i Rossell
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From: Lluís Batlle i Rossell @ 2012-09-24 19:43 UTC (permalink / raw)
To: Btrfs mailing list
Hello,
I wanted to resize my filesystem to 512MiB less. I had created the btrfs
after I had set the partitions some days ago, and it was like this:
# cat /sys/class/block/sda1/size
234436482
Getting in bytes:
234436482*512 = 120031478784
I run:
# btrfs fi resize -512m /
And I see in dmesg:
btrfs: new size for /dev/sda1 is 119494606848
But that's not the previous size - 512MiB. It is:
120031478784 - 119494606848 = 536871936 = 512*1024*1024 + 1024
So, there is an 'off by +1024'. I shrinked the partition to +1024 bytes bigger
than would be by subtracting 512MiB, just in case.
What is that off by 1024?
This is 3.5.4.
Regards,
Lluís.
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2012-09-24 19:43 Resize, off by 1024 bytes Lluís Batlle i Rossell
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