Re: [Gluster-devel] XFS kernel panic bug?

2014-06-12 Thread Niels de Vos
On Thu, Jun 12, 2014 at 07:26:25AM +0100, Justin Clift wrote: > On 12/06/2014, at 6:58 AM, Niels de Vos wrote: > > > If you capture a vmcore (needs kdump installed and configured), we may > > be able to see the cause more clearly. Oh, these seem to be Xen hosts. I don't think kdump (mainly kexec

Re: [Gluster-devel] XFS kernel panic bug?

2014-06-11 Thread Justin Clift
On 12/06/2014, at 6:58 AM, Niels de Vos wrote: > If you capture a vmcore (needs kdump installed and configured), we may > be able to see the cause more clearly. That does help, and so will Harsha's suggestion too probably. :) I'll look into it properly later on today. For the moment, I've reb

Re: [Gluster-devel] XFS kernel panic bug?

2014-06-11 Thread Niels de Vos
On Thu, Jun 12, 2014 at 06:28:13AM +0100, Justin Clift wrote: > Hi Niels, > > 4 out of 5 Rackspace slave VM's hung overnight. Rebooted one of > them and it didn't come back. Checking out it's console (they > have an in-browser Java applet for it) showed a kernel traceback. > > Scrollback for th

Re: [Gluster-devel] XFS kernel panic bug?

2014-06-11 Thread Harshavardhana
You could tune 'dirty_ratio/background_ratio' to get this sorted out - to avoid larger buffers in memory. On Wed, Jun 11, 2014 at 10:51 PM, Justin Clift wrote: > Thanks. :) > > Going to assume "really busy host". (hoping) > > I guess looking into raising the timeout value or something would be >

Re: [Gluster-devel] XFS kernel panic bug?

2014-06-11 Thread Justin Clift
Thanks. :) Going to assume "really busy host". (hoping) I guess looking into raising the timeout value or something would be the right thing to try first. I'll look into it after getting some sleep in a bit. + Justin On 12/06/2014, at 6:47 AM, Anand Babu Periasamy wrote: > This doesn't look l

Re: [Gluster-devel] XFS kernel panic bug?

2014-06-11 Thread Anand Babu Periasamy
This doesn't look like xfs bug. It is likely caused by a bad disk / array or a really busy host. On Wed, Jun 11, 2014 at 10:28 PM, Justin Clift wrote: > Hi Niels, > > 4 out of 5 Rackspace slave VM's hung overnight. Rebooted one of > them and it didn't come back. Checking out it's console (they

[Gluster-devel] XFS kernel panic bug?

2014-06-11 Thread Justin Clift
Hi Niels, 4 out of 5 Rackspace slave VM's hung overnight. Rebooted one of them and it didn't come back. Checking out it's console (they have an in-browser Java applet for it) showed a kernel traceback. Scrollback for the console (took some effort ;>) is attached. It's showing a bunch of XFS me