[CentOS] Odd INFO "120 seconds" in logs for 2.6.18-194.3.1

[Ireneusz Piasecki]

  W dniu 2010-06-08 09:54, Tsuyoshi Nagata pisze:
> Hi
> (2010/06/08 5:12), Steve Brooks wrote:
>> Jun  7 19:45:21 sraid3 kernel:  [<ffffffff800ec2a2>] inode_wait+0x0/0xd
>> Jun  7 19:45:21 sraid3 kernel:  [<ffffffff80063ab0>]
>> out_of_line_wait_on_bit+0x6c/0x78
>> Jun  7 19:45:21 sraid3 kernel:  [<ffffffff800a0aec>]
>> wake_bit_function+0x0/0x23
>> Jun  7 19:45:21 sraid3 kernel:  [<ffffffff8003dbbf>] ifind_fast+0x6e/0x83
> This message was created at Linux/fs/inode.c:ifind_fast()
> The source code was bellows,
>
> Linux/fs/inode.c:
> 912 static struct inode *ifind_fast(struct super_block *sb,
> 913                 struct hlist_head *head, unsigned long ino)
> 914 {
> 915         struct inode *inode;
> 916
> 917  *LOCK* spin_lock(&inode_lock);<= This takes
> 918         inode = find_inode_fast(sb, head, ino);<=  more 120s.
> 919         if (inode) {
> 920                 __iget(inode);
> 921   *UNLOCK*      spin_unlock(&inode_lock);
> 922                 wait_on_inode(inode);
> 923                 return inode;
> 924         }
> 925         spin_unlock(&inode_lock);
> 926         return NULL;
> 927 }
> 928
>
> I guess your your file system has a trouble with i-node(file number) resources.
> CAUSES:
>         Hard Disk trouble (bit error/raid trouble.)
>         i-node trouble (overflow. etc.)
>         Memory/CPU trouble(&inode_lock)
>
> Buy Fresh Hard disks&  rebuild them is convenience way.
> Or memtest86 can finds DIMM trouble.(or CPU, mother board)
> Or ext4 bug in 194.3.1 kernel, back to ext3!
>
Ok, then i will test all of my centos 5.5 32 nodes: cpu, ram, disks etc. 
This came with the kernel of Centos 5.5. Before there was'nt such 
errors/warrning. Redhat bugizilla: 
https://bugzilla.redhat.com/show_bug.cgi?id=573106

I.Piasecki

> -tsuyoshi
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