zpool import hangs when out of space - Was: zfs pool import hangs on [tx->tx_sync_done_cv]

[Mark Martinec]

On 10/14/2014 03:15, K. Macy wrote:
> What is using the extra space in the pool? Is there an unmounted
> dataset or snapshot? Do you know how to easily tell? Unlike txg and
> zio processing I don't have the luxury of having just read that part
> of the codebase.

Most likely the snapshots (regular periodic snapshots).
Changes after upgrading an OS can maybe take an additional 50%
of space (just guessing). Btw, ashift=12.
Still can't see how that would amount to 4 GiB, but it's possible.

   Mark