ZFS space consumption
nutsbastogne at gmail.com
Mon May 27 09:56:10 UTC 2019
I'm confused about the zfs consumption of space.
I'm using ZFS to create clone from a sysprep and use it as a zvol for vm
connected via iscsi.
The zvol has a size of 256GB.
But several dataset have a space comsuption bigger than the size of the
I thought this could be happen when we use snapshot but this is not my case.
here information from one zvol impacted :
logicalused and logicalreferenced are correct, so the vm didnt see a disk
bigger than 256GB.
As used, usedbydataset, referenced properties don't include metadata
neither snapshot i dont'know what it could be.
After some research on the web some people had the same issue du to the
blocksize of their disk and had to change the ashift to 12. but this is our
disk : (from diskinfo -v)
512 # sectorsize
3840755982336 # mediasize in bytes (3.5T)
7501476528 # mediasize in sectors
4096 # stripesize
volblocksize = 16k
ashift = 12
What i can check to go deeper on this issue ?
or this is just a normal behavior du to my configuration ?
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