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Old 09-01-2009, 09:46 AM   #1
ravibhure
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Registered: May 2007
Posts: 75

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Linux ethernet does not support


Hello,
For few days before there is something wrong with my Linux server that actually server goes in stuck/hang situation, does not support login (ssh) or does not support any other activities, Lot of alerts comes that show's 'Host is Down' again back after some it will act normal, I am very confusing how it goes, on this server not a single service running that takes load or sync anything and this is all is in my control and not in WAN network. I searched then found in 'dmesg' and '/var/log/messages'

My kernel version is '2.6.18-128.2.1.el5xen'

[root@localhost ~]#dmesg | tail
Warning Timer ISR/1: Time went backwards: delta=-55997866 delta_cpu=516002134 shadow=2703476298839031 off=869627544 processed=2703477224310196 cpu_processed=2703476652310196
0: 2703477224310196
1: 2703476652310196
2: 2703477092310196
3: 2703477192310196

[root@localhost ~]# tail /var/log/messages
Sep 1 06:57:13 localhost kernel: 0: 2703912188310196
Sep 1 06:57:13 localhost kernel: 1: 2703911680310196
Sep 1 06:57:13 localhost kernel: 2: 2703912232310196
Sep 1 06:57:13 localhost kernel: 3: 2703912276310196
Sep 1 06:57:19 localhost kernel: printk: 44 messages suppressed.
Sep 1 06:57:19 localhost kernel: Warning Timer ISR/2: Time went backwards: delta=-19047058 delta_cpu=56952942 shadow=2703917185720058 off=539744563 processed=2703917744310196 cpu_processed=2703917668310196
Sep 1 06:57:19 localhost kernel: 0: 2703917744310196
Sep 1 06:57:19 localhost kernel: 1: 2703916780310196
Sep 1 06:57:19 localhost kernel: 2: 2703917668310196
Sep 1 06:57:19 localhost kernel: 3: 2703917652310196

[root@localhost log]# top
top - 07:01:27 up 31 days, 7:12, 4 users, load average: 0.05, 0.03, 0.01
Tasks: 116 total, 1 running, 115 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 7844864k total, 1927368k used, 5917496k free, 417764k buffers
Swap: 8388600k total, 0k used, 8388600k free, 1047412k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1 root 15 0 10344 648 552 S 0.0 0.0 0:00.55 init
2 root RT -5 0 0 0 S 0.0 0.0 0:00.15 migration/0
3 root 34 19 0 0 0 S 0.0 0.0 0:00.05 ksoftirqd/0
4 root RT -5 0 0 0 S 0.0 0.0 0:00.08 watchdog/0
5 root RT -5 0 0 0 S 0.0 0.0 0:00.09 migration/1
6 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/1
7 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/1
8 root RT -5 0 0 0 S 0.0 0.0 0:00.08 migration/2
9 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/2
10 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/2
11 root RT -5 0 0 0 S 0.0 0.0 0:00.12 migration/3
12 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/3
13 root RT -5 0 0 0 S 0.0 0.0 0:00.01 watchdog/3
14 root 10 -5 0 0 0 S 0.0 0.0 0:05.70 events/0
15 root 10 -5 0 0 0 S 0.0 0.0 0:00.07 events/1
16 root 10 -5 0 0 0 S 0.0 0.0 0:00.16 events/2
17 root 10 -5 0 0 0 S 0.0 0.0 0:00.47 events/3
18 root 13 -5 0 0 0 S 0.0 0.0 0:00.00 khelper
19 root 11 -5 0 0 0 S 0.0 0.0 0:00.00 kthread
21 root 11 -5 0 0 0 S 0.0 0.0 0:00.00 xenwatch
22 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 xenbus
27 root 10 -5 0 0 0 S 0.0 0.0 0:00.03 kblockd/0
28 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 kblockd/1
29 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 kblockd/2
30 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 kblockd/3
31 root 20 -5 0 0 0 S 0.0 0.0 0:00.00 kacpid
133 root 20 -5 0 0 0 S 0.0 0.0 0:00.00 cqueue/0
134 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 cqueue/1
135 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 cqueue/2
136 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 cqueue/3
140 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 khubd
142 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 kseriod

Please anyone tell me how to resolve

Ravi

Last edited by ravibhure; 09-01-2009 at 10:43 AM.
 
Old 09-01-2009, 11:45 AM   #2
TB0ne
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Registered: Jul 2003
Location: Birmingham, Alabama
Distribution: SuSE, RedHat, Slack,CentOS
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Quote:
Originally Posted by ravibhure View Post
Hello,
For few days before there is something wrong with my Linux server that actually server goes in stuck/hang situation, does not support login (ssh) or does not support any other activities, Lot of alerts comes that show's 'Host is Down' again back after some it will act normal, I am very confusing how it goes, on this server not a single service running that takes load or sync anything and this is all is in my control and not in WAN network. I searched then found in 'dmesg' and '/var/log/messages'

My kernel version is '2.6.18-128.2.1.el5xen'

Please anyone tell me how to resolve

Ravi
Please write clearly...your question is hard to follow. Not sure what you mean by "again back after some it will act normal"...do you mean if you wait long enough, the server starts responding??

Also, the info you posted, doesn't really give alot of information. What hardware are you running on? What version/distro of Linux?

From the RedHat knowledgebase, this is a known and resolved bug:

https://bugzilla.redhat.com/show_bug.cgi?id=222973
 
Old 09-02-2009, 04:28 AM   #3
ravibhure
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Registered: May 2007
Posts: 75

Original Poster
Rep: Reputation: 15
Thanks TB0ne
The issue has been resolved, we have replaced the faulty ram, these are the RAM error's.

Sorry for my bad English.
 
  


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