Ilya,
not sure if dmesg output in the previous is related to the cephfs, but from what I can see it looks good with your kernel. I would have seen hang tasks by now, but not anymore. I've ran a bunch of concurrent dd tests and also the file touch tests and there are no more delays.
So, it looks like you have nailed the bug!
Do you plan to backport the fix to the 3.16 or 3.17 branches?
Cheers
Andrei
not sure if dmesg output in the previous is related to the cephfs, but from what I can see it looks good with your kernel. I would have seen hang tasks by now, but not anymore. I've ran a bunch of concurrent dd tests and also the file touch tests and there are no more delays.
So, it looks like you have nailed the bug!
Do you plan to backport the fix to the 3.16 or 3.17 branches?
Cheers
Andrei
From: "Ilya Dryomov" <ilya.dryomov@xxxxxxxxxxx>
To: "Andrei Mikhailovsky" <andrei@xxxxxxxxxx>
Cc: "ceph-users" <ceph-users@xxxxxxxxxxxxxx>
Sent: Friday, 28 November, 2014 5:28:28 PM
Subject: Re: Giant + nfs over cephfs hang tasks
On Fri, Nov 28, 2014 at 8:20 PM, Ilya Dryomov <ilya.dryomov@xxxxxxxxxxx> wrote:
> On Fri, Nov 28, 2014 at 8:19 PM, Ilya Dryomov <ilya.dryomov@xxxxxxxxxxx> wrote:
>> On Fri, Nov 28, 2014 at 8:13 PM, Andrei Mikhailovsky <andrei@xxxxxxxxxx> wrote:
>>> Ilya, yes I do! LIke these from different osds:
>>>
>>> [ 4422.212204] libceph: osd13 192.168.168.201:6819 socket closed (con state
>>> OPEN)
>>
>> Can you by any chance try a kernel from [1] ? It's based on Ubuntu
>> config and unless you are doing something fancy should boot your box.
>> You have to install it only on the client box of course.
>>
>> This may be related to the bug I'm currently trying to nail down and
>> I'd like to know if the latest bits make any difference.
>
> [1] http://gitbuilder.ceph.com/kernel-deb-precise-x86_64-basic/ref/testing/linux-image-3.18.0-rc6-ceph-00024-g72ca172_3.18.0-rc6-ceph-00024-g72ca172-1_amd64.deb
It's currently rebuilding because of an unrelated patch and will be
overwritten once gitbuilder is done. If it's not there by the time you
try use this link:
http://gitbuilder.ceph.com/kernel-deb-precise-x86_64-basic/sha1/72ca172a582d656930f413c3733401b8a5c120db/linux-image-3.18.0-rc6-ceph-00024-g72ca172_3.18.0-rc6-ceph-00024-g72ca172-1_amd64.deb
Thanks,
Ilya
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