On Wed, 11 Feb 2015, Wido den Hollander wrote:
On 11-02-15 12:57, Dennis Kramer (DT) wrote:
On Fri, 7 Nov 2014, Gregory Farnum wrote:
Did you upgrade your clients along with the MDS? This warning
indicates the
MDS asked the clients to boot some inboxes out of cache and they have
taken
too long to do so.
It might also just mean that you're actively using more inodes at any
given
time than your MDS is configured to keep in memory.
-Greg
How can one verify this? I'm getting the same warnings. I'm curious how
I can check if there are indeed more inodes actively used than my MDS
can keep in memory.
I think that using the admin socket you can query the MDS for how much
Inodes are cached.
$ ceph daemon mds.X help
I don't know the exact syntax from the top of my head, but it should be
something you can fetch there.
And iirc it also prints this ones every X seconds in the MDS log file.
Wido
After setting the debug level to 2, I can see:
2015-02-11 13:36:31.922262 7f0b38294700 2 mds.0.cache check_memory_usage
total 58516068, rss 57508660, heap 32676, malloc 1227560 mmap 0, baseline
39848, buffers 0, max 67108864, 8656261 / 9999931 inodes have caps,
10367318 caps, 1.03674 caps per inode
It doesn't look like it has serious memory problems, unless my
interpretation is wrong of the output.
It looks like I have the same symptoms as:
http://tracker.ceph.com/issues/10151
I'm running 0.87 on all my nodes.
Thanks.
On Fri, Nov 7, 2014 at 5:17 AM Daniel Takatori Ohara
<dtohara@xxxxxxxxxxxxx>
wrote:
Hi,
In my cluster, when i execute the command ceph health detail, show me
the
message.
mds0: Many clients (17) failing to respond to cache
pressure(client_count:
)
This message appear when i upgrade the ceph for 0.87 from 0.80.7.
Anyone help me?
Thank's,
Att.
---
Daniel Takatori Ohara.
System Administrator - Lab. of Bioinformatics
Molecular Oncology Center
Instituto S?rio-Liban?s de Ensino e Pesquisa
Hospital S?rio-Liban?s
Phone: +55 11 3155-0200 (extension 1927)
R: Cel. Nicolau dos Santos, 69
S?o Paulo-SP. 01308-060
http://www.bioinfo.mochsl.org.br
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