Re: [Moosefs-users] chunkserver can't connect to masterserver

[Michał B. <mic...@ge...>]

You have lots of chunks on your chunkservers. Probably the registration
packet for the master is too big and the master server rejects it.

 

You need to change in the "matocsserv.c" file in "mfsmaster" folder this
line:

#define MaxPacketSize 50000000

 

into this:

#define MaxPacketSize 200000000

 

After changing source you need to recompile the master server and restart
it.

 

Generally on one chunkserver there are about 500,000 chunks. For this amount
it is necessary to allocate 6 million bytes. Limit of 50 million seemed
quite reasonable. But you have about 5,000,000 chunks on one chunkserver
which demands about 60 million bytes for sending information about these
chunks. And you exceed this limit. That's why we suggest to increase it to
200 million bytes. 

 

Let us know if it fixes your problem.

 

 

Kind regards

Michał Borychowski 

 

 

 

 

From: lwxian_aha [mailto:lwx...@16...] 

Sent: Tuesday, May 11, 2010 5:34 AM

To: moosefs-users

Subject: [Moosefs-users] chunkserver can't connect to masterserver

 

today I have new trouble with my new MFS system,chunkserver can't connect to
masterserver;

 

my MFS system  consist of one masterserver,three chunkserver,every
chunkserver with 7.2T diskspace; about 1.4T 

data and about 7 million files ,every file with 2 copies;

MFS version is 1.6.11

OS version CENTOS 5.0

FS is ext3;

 

Following is the error message:

 

[root@localhost mfs]# tail /var/log/messages 

May 11 10:57:00 localhost mfsmaster[25802]: server 1 (ip: 192.168.10.23,
port: 9422): usedspace: 33326616576 

(31.04 GiB), totalspace: 140025790464 (130.41 GiB), usage: 23.80%

May 11 10:57:00 localhost mfsmaster[25802]: total: usedspace: 33326616576
(31.04 GiB), totalspace: 140025790464 

(130.41 GiB), usage: 23.80%

May 11 10:57:03 localhost mfsmaster[25802]: CS(192.168.10.21) packet too
long (56130653/50000000)

May 11 10:57:03 localhost mfsmaster[25802]: chunkserver disconnected - ip:
192.168.10.21, port: 0, usedspace: 0 

(0.00 GiB), totalspace: 0 (0.00 GiB)

May 11 10:57:08 localhost mfsmaster[25802]: CS(192.168.10.21) packet too
long (56130653/50000000)

May 11 10:57:08 localhost mfsmaster[25802]: chunkserver disconnected - ip:
192.168.10.21, port: 0, usedspace: 0 

(0.00 GiB), totalspace: 0 (0.00 GiB)

May 11 10:57:13 localhost mfsmaster[25802]: CS(192.168.10.21) packet too
long (56130653/50000000)

May 11 10:57:13 localhost mfsmaster[25802]: chunkserver disconnected - ip:
192.168.10.21, port: 0, usedspace: 0 

(0.00 GiB), totalspace: 0 (0.00 GiB)

May 11 10:57:18 localhost mfsmaster[25802]: CS(192.168.10.21) packet too
long (56130653/50000000)

May 11 10:57:18 localhost mfsmaster[25802]: chunkserver disconnected - ip:
192.168.10.21, port: 0, usedspace: 0 

(0.00 GiB), totalspace: 0 (0.00 GiB)

 

 

 

what's happen ?need you help!

thanks a lot's

 

2010-05-05 

________________________________________

lwxian_aha