moosefs-users

[Moosefs-users] Question about ECONNRESET (Connection reset by peer)

[Sext <se...@aw...>]

Hello

Could you please tell me in which cases there is an error:
Feb 15 18:09:25 mfsmount[2174]: readblock; tcpread error: ECONNRESET
(Connection reset by peer)
Feb 15 18:09:25 mfsmount[2174]: file: 316275, index: 0, chunk: 134391,
version: 1, cs: C0A8015D:9422 - readblock error (try counter: 3)

At rush hour, some of our servers are beginning to slow down and write
to a log of these messages.
What we need to check first? Could there be a problem with the network
cards or a problem on the switch?
We use the MFS for streaming video. All hard drives loaded with no
more than 40%. On each Chunkserver idle ~ 50%.

Kind regards,
Vadik Sext

Re: [Moosefs-users] Question about ECONNRESET (Connection reset by peer)

[Michał B. <mic...@ge...>]

Hi!

In this case chunkserver resets connection to a client. Probably it is
caused by timeout which may occur at high network occupancy or high usage of
HDDs. 

Firstly check network load. You can also send charts of chunkserver from cgi
interface (last tab). The below message is from 192.168.1.93 (0xC0A8015D)
machine. 
BTW. Does only this machine give this message or also others?


Kind regards
Michał Borychowski 
MooseFS Support Manager
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Gemius S.A.
ul. Wołoska 7, 02-672 Warszawa
Budynek MARS, klatka D
Tel.: +4822 874-41-00
Fax : +4822 874-41-01

-----Original Message-----
From: Sext [mailto:se...@aw...] 
Sent: Wednesday, February 15, 2012 7:27 PM
To: moo...@li...
Subject: [Moosefs-users] Question about ECONNRESET (Connection reset by
peer)

Hello

Could you please tell me in which cases there is an error:
Feb 15 18:09:25 mfsmount[2174]: readblock; tcpread error: ECONNRESET
(Connection reset by peer) Feb 15 18:09:25 mfsmount[2174]: file: 316275,
index: 0, chunk: 134391,
version: 1, cs: C0A8015D:9422 - readblock error (try counter: 3)

At rush hour, some of our servers are beginning to slow down and write to a
log of these messages.
What we need to check first? Could there be a problem with the network cards
or a problem on the switch?
We use the MFS for streaming video. All hard drives loaded with no more than
40%. On each Chunkserver idle ~ 50%.

Kind regards,
Vadik Sext

----------------------------------------------------------------------------
--
Virtualization & Cloud Management Using Capacity Planning Cloud computing
makes use of virtualization - but cloud computing also focuses on allowing
computing to be delivered as a service.
http://www.accelacomm.com/jaw/sfnl/114/51521223/
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Re: [Moosefs-users] Question about ECONNRESET (Connection reset by peer)

[Michał B. <mic...@ge...>]

Hi!

With the below instructions you can increase timeout on chunkservers and
mfsmounts. Please give them a try and come back to us with the results.


1. csserv.c file in mfschunkserver:

// connection timeout in seconds
#define CSSERV_TIMEOUT 5

change 5 to eg. 10

2. cscomm.c file in mfsmount:

#define CSMSECTIMEOUT 5000
change 5000 to eg. 10000



Kind regards
Michał Borychowski 
MooseFS Support Manager
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Gemius S.A.
ul. Wołoska 7, 02-672 Warszawa
Budynek MARS, klatka D
Tel.: +4822 874-41-00
Fax : +4822 874-41-01

-----Original Message-----
From: Sext [mailto:se...@aw...] 
Sent: Wednesday, February 15, 2012 7:27 PM
To: moo...@li...
Subject: [Moosefs-users] Question about ECONNRESET (Connection reset by
peer)

Hello

Could you please tell me in which cases there is an error:
Feb 15 18:09:25 mfsmount[2174]: readblock; tcpread error: ECONNRESET
(Connection reset by peer) Feb 15 18:09:25 mfsmount[2174]: file: 316275,
index: 0, chunk: 134391,
version: 1, cs: C0A8015D:9422 - readblock error (try counter: 3)

At rush hour, some of our servers are beginning to slow down and write to a
log of these messages.
What we need to check first? Could there be a problem with the network cards
or a problem on the switch?
We use the MFS for streaming video. All hard drives loaded with no more than
40%. On each Chunkserver idle ~ 50%.

Kind regards,
Vadik Sext

----------------------------------------------------------------------------
--
Virtualization & Cloud Management Using Capacity Planning Cloud computing
makes use of virtualization - but cloud computing also focuses on allowing
computing to be delivered as a service.
http://www.accelacomm.com/jaw/sfnl/114/51521223/
_______________________________________________
moosefs-users mailing list
moo...@li...
https://lists.sourceforge.net/lists/listinfo/moosefs-users