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List: dragonfly-users
Subject: =?UTF-8?Q?Re=3A_Random_server_crashes_every_few_weeks_=28smp=5Finvlt?= =?UTF-8?Q?lb=3A_endless_loop_
From: Matthew Dillon <dillon () backplane ! com>
Date: 2016-08-09 2:32:45
Message-ID: CAOZ7CpD0Gf5waGHFMOzSnxUkScO0MD_4BrthP4PGcSNTQ_OV6A () mail ! gmail ! com
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Its likely another virtio bug. We just haven't been able to test it very
well. I'll take a pass on it and see if I can find anything obvious.
-Matt
On Mon, Aug 8, 2016 at 12:02 PM, Stefan Unterweger <
232.20711@chiffre.aleturo.com> wrote:
>
> * Matthew Dillon on Mon, Aug 08, 2016 at 11:08:40AM -0700:
> > And (2) What is the device attachment for the swap drive (in the dmesg
> > output).
>
> The swap drive is vbd1s0b, with the following attachment:
> | virtio_pci2: <VirtIO PCI Block adapter> port 0xc040-0xc07f mem
> 0xfebf1000-0xfebf1fff irq 10 at device 6.0 on pci0
> | vtblk1: <VirtIO Block Adapter> on virtio_pci2
> | virtio_pci2: host features: 0x710006d4 <EventIdx,RingIndirect,
> NotifyOnEmpty,Topology,WriteCache,SCSICmds,BlockSize,
> DiskGeometry,MaxNumSegs>
> | virtio_pci2: negotiated features: 0x10000254 <RingIndirect,WriteCache,
> BlockSize,DiskGeometry,MaxNumSegs>
>
> I have attached the full dmesg for reference.
>
> > Indefinite wait buffer typically means the disk driver locked up while
> the
> > system was trying to swap to/from it. Two questions: (1) Is the swap
> > encrypted ?
>
> It is indeed encrypted. We don't want to trust the data center
> operator, hence everything with the exception of /boot is encrypted.
>
> From fstab:
> | /dev/part-by-uuid/3c563c78-c204-11e5-aff0-010000000000 none swap
> sw,crypt 0 0
>
>
> Stefan
>
>
> > On Mon, Aug 8, 2016 at 5:18 AM, Stefan Unterweger <
> 232.20711@chiffre.aleturo.com> wrote:
> > > Another crash with 09b0c4f76, but this one looks different. The
> console
> > > was scrolling endless streams of lines like this one:
>
> > > | swap_pager: indefinite wait buffer: bp 0xffffffe00e57bea8 offset:
> 4133535744, size: 4096
>
> --
> ▪ Die Internetbleibe. Schick, magisch, leistungsstark.
> https://internetbleibe.de/
> ▪ medoly media UG (haftungsbeschränkt) | Hausburgstraße 13, 10249 Berlin
> ▪ info@medolymedia.de | https://medolymedia.de/ | Tel. 030 609 826‒560 |
> Fax …‒569
> ▪ Geschäftsführer: Matthias Nothhaft | HRB 131198 (Amtsgericht
> Berlin-Charlottenburg), Sitz: Berlin, USt-ID: DE275221203
>
[Attachment #3 (text/html)]
<div dir="ltr">Its likely another virtio bug. We just haven't been able to test \
it very well. I'll take a pass on it and see if I can find anything \
obvious.<div><br></div><div>-Matt</div></div><div class="gmail_extra"><br><div \
class="gmail_quote">On Mon, Aug 8, 2016 at 12:02 PM, Stefan Unterweger <span \
dir="ltr"><<a href="mailto:232.20711@chiffre.aleturo.com" \
target="_blank">232.20711@chiffre.aleturo.com</a>></span> wrote:<br><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex"><br>
* Matthew Dillon on Mon, Aug 08, 2016 at 11:08:40AM -0700:<br>
<span class="">> And (2) What is the device attachment for the swap drive (in the \
dmesg<br> > output).<br>
<br>
</span>The swap drive is vbd1s0b, with the following attachment:<br>
> virtio_pci2: <VirtIO PCI Block adapter> port 0xc040-0xc07f mem \
> 0xfebf1000-0xfebf1fff irq 10 at device 6.0 on pci0<br>
> vtblk1: <VirtIO Block Adapter> on virtio_pci2<br>
> virtio_pci2: host features: 0x710006d4 \
> <EventIdx,RingIndirect,<wbr>NotifyOnEmpty,Topology,<wbr>WriteCache,SCSICmds,BlockSize,<wbr>DiskGeometry,MaxNumSegs><br>
>
> virtio_pci2: negotiated features: 0x10000254 \
> <RingIndirect,WriteCache,<wbr>BlockSize,DiskGeometry,<wbr>MaxNumSegs><br>
<br>
I have attached the full dmesg for reference.<br>
<span class=""><br>
> Indefinite wait buffer typically means the disk driver locked up while the<br>
> system was trying to swap to/from it. Two questions: (1) Is the swap<br>
> encrypted ?<br>
<br>
</span>It is indeed encrypted. We don't want to trust the data center<br>
operator, hence everything with the exception of /boot is encrypted.<br>
<br>
From fstab:<br>
> /dev/part-by-uuid/3c563c78-<wbr>c204-11e5-aff0-010000000000 none swap sw,crypt 0 \
> 0<br>
<span class="HOEnZb"><font color="#888888"><br>
<br>
Stefan<br>
</font></span><span class="im HOEnZb"><br>
<br>
> On Mon, Aug 8, 2016 at 5:18 AM, Stefan Unterweger <<a \
href="mailto:232.20711@chiffre.aleturo.com">232.20711@chiffre.aleturo.com</a><wbr>> \
wrote:<br> </span><span class="im HOEnZb">> > Another crash with 09b0c4f76, but \
this one looks different. The console<br> > > was scrolling endless streams \
of lines like this one:<br> <br>
> > | swap_pager: indefinite wait buffer: bp 0xffffffe00e57bea8 offset: \
4133535744, size: 4096<br> <br>
</span><div class="HOEnZb"><div class="h5">--<br>
▪ Die Internetbleibe. Schick, magisch, leistungsstark. <a \
href="https://internetbleibe.de/" rel="noreferrer" \
target="_blank">https://internetbleibe.de/</a><br> ▪ medoly media UG \
(haftungsbeschränkt) | Hausburgstraße 13, 10249 Berlin<br> ▪ <a \
href="mailto:info@medolymedia.de">info@medolymedia.de</a> | <a \
href="https://medolymedia.de/" rel="noreferrer" \
target="_blank">https://medolymedia.de/</a> | Tel. 030 609 826‒560 | Fax \
…‒569<br> ▪ Geschäftsführer: Matthias Nothhaft | HRB 131198 (Amtsgericht \
Berlin-Charlottenburg), Sitz: Berlin, USt-ID: DE275221203<br> \
</div></div></blockquote></div><br></div>
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