Date: Sun, 13 Oct 2013 23:30:02 +0100 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Steven Hartland" <killing@multiplay.co.uk>, "Daniel O'Connor" <doconnor@gsoft.com.au> Cc: freebsd-stable stable <freebsd-stable@freebsd.org> Subject: Re: ZFS hanging on too hard Message-ID: <9E3D28DB8C9E49DC869717C4649F3EBD@multiplay.co.uk> References: <0A1B986B-1D7D-4D88-82EF-C1E7A91FF089@gsoft.com.au> <CBCD216C18564275A96FF213AA1FDA91@multiplay.co.uk> <BF4F17FA-EC8C-4B7B-84BD-BAA5874EEB8B@gsoft.com.au> <7C2F6AFBB5BD41868450D3C4BD722B5F@multiplay.co.uk> <D8658706-EA27-4D06-BEA6-F2EBB9E7BB6E@gsoft.com.au> <0BC7A3E1DA9A4D0C9E63ED73E88BA6AE@multiplay.co.uk>
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----- Original Message -----
From: "Steven Hartland" <killing@multiplay.co.uk>
To: "Daniel O'Connor" <doconnor@gsoft.com.au>
Cc: "freebsd-stable stable" <freebsd-stable@freebsd.org>
Sent: Sunday, October 13, 2013 11:27 PM
Subject: Re: ZFS hanging on too hard
>
> ----- Original Message -----
> From: "Daniel O'Connor" <doconnor@gsoft.com.au>
>>
>> On 14/10/2013, at 8:44, "Steven Hartland" <killing@multiplay.co.uk> wrote:
>> >> root@gateway:~ # zpool export -f backupA
>> >> load: 0.04 cmd: zpool 1384 [tx->tx_sync_done_cv)] 2.63r 0.00u 0.00s 0% 2804k
>> >> load: 0.04 cmd: zpool 1384 [tx->tx_sync_done_cv)] 2.79r 0.00u 0.00s 0% 2804k
>> >> load: 0.04 cmd: zpool 1384 [tx->tx_sync_done_cv)] 2.99r 0.00u 0.00s 0% 2804k
>> >
>> > Hmm I guess your going to have to reboot, which is not ideal.
>>
>>
>> Yeah :(
>> Also, if I _do_ reboot it hangs on shutdown, the last message is about da0 having
>> pending buffers..
>>
>> It rather makes my idea of a zpool on the backup disk a bit risky - if someone
>> pulls the disk while it's imported then the server would need to be rebooted.
>
> That could mean the underlying issue may be a USB or CAM scsi_da.
>
> You didnt say which OS version your running?
The following may help forcing the shutdown if it is a USB problem, although be
warned you may well loose data in normal operation, so would avoid leaving it
in your case.
hw.usb.no_shutdown_wait=1
Regards
Steve
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