Hi,
>>Also where exactly COWed data written
>>>I'm not quite sure what you're asking here. Data, whether newly written or
>>>>>>copy-on-write, goes to a newly allocated block, which may reside on any
>>>>>>vdev, and will be spread across devices if using RAID.
My exact doubt is, if COW is default behavior of ZFS then does COWd data
written to the same physical drive where the filesystem resides?
If so the physical device capacity should be more that what the file system
size is.
I mean in normal filesystem sinario, a partition with 1Gb with some some
filesystem (say ext2fs) is created, then use can save upto 1Gb data under that.
Is the same behavior with ZFS?. Because I feel since COW is default ZFS
require > 1Gb for one fileystem inorder to store COWed data.
Please correct me if i am wrong.
-sridhar
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