I do *not* understand why there is any justification for renaming physical
interfaces between boots, but I had a demonstration today when a USB port was
renamed c1t0d0p0 which had previously been c11t0d0p0.
I think we have reached terminal complexity. No one understands the system any
longer and so they randomly break things of which they are unaware.
Reg
On Thursday, April 22, 2021, 08:54:14 PM CDT, <li...@mcintyreweb.com>
wrote:
On Thu, Apr 22, 2021, at 1:15 PM, Reginald Beardsley via openindiana-discuss
wrote:
> I ran into this a long time ago trying to set up a ZFS image on a USB
> drive for a laptop. Ultimately I gave up as it had to be plugged into
> the "correct" USB port and that seemed to change unpredictably.
I think this should be OK if you run "zpool export" before unplugging the USB
disk. I agree that this may be difficult/impossible for a boot image though
since you can't export the rpool while the system is running ...
> On Thursday, April 22, 2021, 03:01:03 PM CDT, Stephan Althaus
> <stephan.alth...@duedinghausen.eu> wrote:
> The issue is, that the zfs import routine should read the zfs labels on
> the disks instead on insist on some device path.
> And in these cases just see if some other disk (that is not part of a
> successfully imported 'online' pool) has the correct zfs label for the
> "missing" disk.
I agree that this seems to be a bug, which could be filed against illumos/zfs.
But it may be dangerous to change without a ZFS expert confirming there is not
some other case that would break without the current logic. For example there
might be complications for systems with multipath IO. In my case it was a lot
easier to fix via disk plugging rather than learning how to edit the kernel.
FWIW, deleting /etc/zfs/zpool.cache did not fix this, so the problem appears
just by reading the paths on disk.
Hugh.
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