Ilya,
The 3.17.4 kernel that you've given is also good so far. No hang tasks as seen before. However, I do have the same message in dmesg as with the 3.18 kernel that you've sent. This message I've not seen in the past while using kernel version 3.2 onwards.
Not really sure if this message should be treated as alarming.
Andrei
The 3.17.4 kernel that you've given is also good so far. No hang tasks as seen before. However, I do have the same message in dmesg as with the 3.18 kernel that you've sent. This message I've not seen in the past while using kernel version 3.2 onwards.
Not really sure if this message should be treated as alarming.
Andrei
From: "Ilya Dryomov" <ilya.dryomov@xxxxxxxxxxx>
To: "Andrei Mikhailovsky" <andrei@xxxxxxxxxx>
Cc: "ceph-users" <ceph-users@xxxxxxxxxxxxxx>
Sent: Saturday, 29 November, 2014 10:40:48 AM
Subject: Re: Giant + nfs over cephfs hang tasks
On Sat, Nov 29, 2014 at 2:33 AM, Andrei Mikhailovsky <andrei@xxxxxxxxxx> wrote:
> 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!
Great, good to have another data point.
>
> Do you plan to backport the fix to the 3.16 or 3.17 branches?
That's the tricky part. Can you try
http://gitbuilder.ceph.com/kernel-deb-precise-x86_64-basic/ref/for-andrei-1/linux-image-3.17.4-ceph-00638-g0f25ebb_3.17.4-ceph-00638-g0f25ebb-1_amd64.deb
?
Thanks,
Ilya
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