Re: Attempting to roll back zfs transactions on a disk to recover a destroyed ZFS filesystem

2013-07-11 Thread Alan Somers
"zpool export" does not wipe the transaction history. It does, however, write new labels and some metadata, so there is a very slight chance that it might overwrite some of the blocks that you're trying to recover. But it's probably safe. An alternative, much more complicated, solution would be

Re: GPT issues with device path lengths involving make_dev_physpath_alias

2013-07-15 Thread Alan Somers
It's a compatibility problem. If you change that constant, then any binaries built with the old value will break if they rely on it having a fixed value in a system or library call. For example, the MFIIO_QUERY_DISK ioctl in the mfi(4) driver passes a structure with an array of size SPECNAMELEN +

Re: Zfs encryption property for freebsd 8.3

2013-09-03 Thread Alan Somers
On Tue, Sep 3, 2013 at 6:22 AM, Florent Peterschmitt wrote: > Le 03/09/2013 14:14, Emre Çamalan a écrit : >> Hi, >> I want to encrypt some disk on my server with Zfs encryption property but it >> is not available. > > "That would require ZFS v30. As far as I am aware Oracle has not > released the

Re: Zfs encryption property for freebsd 8.3

2013-09-03 Thread Alan Somers
On Tue, Sep 3, 2013 at 9:01 AM, Florent Peterschmitt wrote: > Le 03/09/2013 16:53, Alan Somers a écrit : >> GELI is full-disk encryption. It's far superior to ZFS encryption. > > Yup, but is there a possibility to encrypt a ZFS volume (not a whole > pool) with a separa