How to replace a zfs filesystem with a zfs clone in Solaris?
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Create zfs filesystems:
# zfs create test_pool/data # zfs create test_pool/data/sales
Create a snapshot of test_pool/data/sales:
# zfs snapshot test_pool/data/sales@today
Create a clone identical to the above snapshot:
# zfs clone test_pool/data/sales@today test_pool/data/sales_clone # zfs list NAME USED AVAIL REFER MOUNTPOINT test_pool/data 37K 976M 19K /test_pool/data test_pool/data/sales 18K 976M 18K /test_pool/data/sales test_pool/data/sales@today 0 - 18K - test_pool/data/sales_clone 0 976M 18K /test_pool/data/sales_clone
Replace the zfs filesystem with the zfs clone:
# zfs promote test_pool/data/sales_clone
You will notice in the output below that the space accounting of the original test_pool/data/sales filesystem has been replaced with the test_pool/data/sales_clone filesystem
# zfs list NAME USED AVAIL REFER MOUNTPOINT test_pool/data 39K 976M 21K /test_pool/data test_pool/data/sales 0 976M 18K /test_pool/data/sales test_pool/data/sales_clone 18K 976M 18K /test_pool/data/sales_clone test_pool/data/sales_clone@today 0 - 18K -
Rename the filesystems:
# zfs rename test_pool/data/sales test_pool/data/sales_old # zfs rename test_pool/data/sales_clone test_pool/data/sales # zfs list test_pool/data 39K 976M 21K /test_pool/data test_pool/data/sales 18K 976M 18K /test_pool/data/sales test_pool/data/sales@today 0 - 18K - test_pool/data/sales_old 0 976M 18K /test_pool/data/sales_old
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