Closed GoogleCodeExporter closed 9 years ago
/var/log/kernel.log indicates I/O errors on the device:
Mar 5 21:55:16 jon-macbook kernel[0]: zfs_context_init:
footprint.maximum=1073741824, footprint.target=102711296
Mar 5 21:55:16 jon-macbook kernel[0]: kobj_open_file: "/etc/zfs/zpool.cache",
err 2 from vnode_open
Mar 5 21:55:16 jon-macbook kernel[0]: zfs_module_start: memory footprint
9633280 (kalloc 9633280, kernel 0)
Mar 5 21:55:16 jon-macbook kernel[0]: disk1s2: I/O error.
Mar 5 21:55:46: --- last message repeated 20 times ---
Original comment by j...@jmerrifield.com
on 6 Mar 2012 at 5:02
Note that USB is not recommended for ZFS usage. The USB devices usually power
down or don't respond to commands; ZFS then believes there's a device error and
thus kicks of a kernel panic. Basically, if you care about data, don't use a
USB drive.
Original comment by alex.ble...@gmail.com
on 7 Mar 2012 at 11:26
Understood, I was just hoping to get started with it while I wait for the
FireWire adapter to arrive!
Original comment by j...@jmerrifield.com
on 7 Mar 2012 at 3:38
I'd call it a Seagate problem. I have the same drive, and it seems to randomly
go to sleep, sometimes even while being written to. It currently has HFS+ on
it, I figured trying to use it with ZFS would only lead to pain. I also
wouldn't count on the firewire interface to help. On the Amazon product page,
it seems a lot of other people have had similar issues:
http://www.amazon.com/Seagate-FreeAgent-FireWire-External-STBC3000101/dp/B005IA8
4A0
I also saw one saying that the Mac version of the software never disabled
sleep, but doing so with the Windows version of the Seagate software did, and
fixed the problem. I haven't tried that, but the Mac version definitely did
not help me.
BTW, I have two older Seagate 2.5" GoFlex drives and they have (different)
sleep-related issues as well.
On the other hand, I have two WD Elements 2TB USB drives that are working
flawlessly with ZFS so far in my 2 days of testing. They sleep and wake just
as they should, the only thing that causes a kernel panic is pulling the plug.
So I don't think all USB drives are inherently a problem.
Original comment by ebyrne...@gmail.com
on 11 Aug 2012 at 5:56
[deleted comment]
This seems to bee a hardware issue, not a MacZFS software bug. Therefore
closing as invalid.
Original comment by googlelogin@bjoern-kahl.de
on 22 Nov 2013 at 9:56
Original issue reported on code.google.com by
j...@jmerrifield.com
on 6 Mar 2012 at 4:45