zfs deadlock

[Steven Hartland]

Change into the directory of the snapshot then try to send the same
snapshot and it will deadlock.

    Regards
    Steve
----- Original Message ----- 
From: <krichy at cflinux.hu>
To: "Steven Hartland" <killing at multiplay.co.uk>
Cc: <freebsd-fs at freebsd.org>
Sent: Thursday, December 05, 2013 7:26 PM
Subject: Re: zfs deadlock


> Dear Steven,
>
> Thanks for your reply. Do you know how to reproduce the bug? Because simply sending a snapshot which is mounted does not 
> automatically trigger the deadlock. Some special cases needed, or what?
> How to prove that the patch fixes this?
>
> Regards,
> 2013-12-05 19:39 időpontban Steven Hartland ezt írta:
>> Known issue you want:
>> http://svnweb.freebsd.org/changeset/base/258595
>>
>>    Regards
>>    Steve
>>
>> ----- Original Message ----- From: "Richard Kojedzinszky" <krichy at cflinux.hu>
>> To: <freebsd-fs at freebsd.org>
>> Sent: Thursday, December 05, 2013 2:56 PM
>> Subject: zfs deadlock
>>
>>
>>> Dear fs devs,
>>>
>>> We have a freenas server, which is basicaly a freebsd. I was trying to look at snapshots using ls .zfs/snapshot/.
>>>
>>> When I issued it, the system entered a deadlock. An NFSD was running, a zfs send was running when I issued the command.
>>>
>>> I attached to command outputs while the system was in a deadlock state. I tried to issue
>>> # reboot -q
>>> But that did not restart the system. After a while (5-10 minutes) the system rebooted, I dont know if the deadman caused that.
>>>
>>> Now the system is up and running.
>>>
>>> It is basically a freebsd 9.2 kernel.
>>>
>>> Do someone has a clue?
>>>
>>> Kojedzinszky Richard
>>
>>
>> --------------------------------------------------------------------------------
>>
>>
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>>
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