From: Samuel Thibault <samuel.thibault@ens-lyon.org>
To: admin@listes.aquilenet.fr, Hans van Kranenburg <hans@knorrie.org>
Cc: xen-devel <xen-devel@lists.xenproject.org>,
Samuel Thibault <admin@aquilenet.fr>,
Samuel Thibault <samuel.thibaut@ens-lyon.org>,
Debian Xen Team <pkg-xen-devel@lists.alioth.debian.org>
Subject: Re: [admin] [Pkg-xen-devel] [BUG] task jbd2/xvda4-8:174 blocked for more than 120 seconds.
Date: Sat, 9 Feb 2019 17:35:34 +0100 [thread overview]
Message-ID: <20190209163534.boh7ljguxytrnb6o@function> (raw)
In-Reply-To: <79756d96-788b-b683-82b1-96a87d2353f1@knorrie.org>
Hello,
Hans van Kranenburg, le sam. 09 févr. 2019 17:01:55 +0100, a ecrit:
> > I have forwarded the original mail: all VM I/O get stuck, and thus the
> > VM becomes unusable.
>
> These are in many cases the symptoms of running out of "grant frames".
Oh! That could be it indeed. I'm wondering what could be monopolizing
them, though, and why +deb9u11 is affected while +deb9u10 is not. I'm
afraid increasing the gnttab max size to 32 might just defer filling it
up.
> -# ./xen-diag gnttab_query_size 5
> domid=5: nr_frames=11, max_nr_frames=32
The current value is 31 over max 32 indeed.
> With Xen 4.8, you can add gnttab_max_frames=64 (or another number, but
> higher than the default 32) to the xen hypervisor command line and reboot.
admin@: I made the modification in the grub config. We can probably try
to reboot with the newer hypervisor, and monitor that value.
Samuel
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next prev parent reply other threads:[~2019-02-09 16:35 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-08 17:00 [BUG] task jbd2/xvda4-8:174 blocked for more than 120 seconds Sacha
2019-02-08 17:13 ` [admin] " Samuel Thibault
2019-02-08 19:18 ` [Pkg-xen-devel] " Hans van Kranenburg
2019-02-08 23:16 ` [admin] [Pkg-xen-devel] " Samuel Thibault
2019-02-09 16:01 ` Hans van Kranenburg
2019-02-09 16:35 ` Samuel Thibault [this message]
2019-02-11 1:37 ` Dongli Zhang
2019-02-11 8:18 ` Samuel Thibault
2019-02-11 21:59 ` Hans van Kranenburg
2019-02-11 22:10 ` Samuel Thibault
2019-02-12 4:11 ` Dongli Zhang
2019-02-17 21:29 ` Samuel Thibault
2019-02-18 0:09 ` Dongli Zhang
2019-02-19 23:49 ` Samuel Thibault
2019-06-01 19:47 ` Samuel Thibault
2019-06-01 19:47 ` [Xen-devel] " Samuel Thibault
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