Re: [Moosefs-users] Cannot write to mounted filesystem

[Dennis J. <den...@co...>]

I already had iptables disabled and now I also disabled selinux on all 
systems but I'm still seeing this problem. This time (after I rebooted all 
systems once) when I issue the copy command nothing happens for about 60 
seconds and the I get the "no space" error again:

[root@centos6 ~]# mfsmount /mnt/mfs/ -H mfsmaster
mfsmaster accepted connection with parameters: read-write,restricted_ip ; 
root mapped to root:root
[root@centos6 ~]# df -h |grep -E "mfs|Avail"
Filesystem            Size  Used Avail Use% Mounted on
mfsmaster:9421        1.4G     0  1.4G   0% /mnt/mfs
[root@centos6 ~]# cp sf2.stap /mnt/mfs/test/
cp: closing `/mnt/mfs/test/sf2.stap': No space left on device
[root@centos6 ~]# df -h |grep -E "mfs|Avail"
Filesystem            Size  Used Avail Use% Mounted on
mfsmaster:9421        1.4G     0  1.4G   0% /mnt/mfs
[root@centos6 ~]# ls -l /mnt/mfs/test/
total 0
-rw-r--r--. 1 root root 0 Jul 30 03:35 sf2.stap

Regards,
   Dennis

On 07/30/2011 02:59 AM, WK wrote:
> Have you verified that you aren't firewalling out any MFS ports between
> the client/master/chunkservers?
>
> Try with iptables turned off and see if you still see the issues.
> Absent that review your mount command.
>
> Also check make sure selinux is not getting in the way.
>
> -wk
>
>
>
> On 7/29/11 1:20 PM, Dennis Jacobfeuerborn wrote:
>> Hi,
>> I'm starting to play with MooseFS and while the setup seemed to work fine I
>> ran into trouble after mounting it.
>>
>> My Setup is a Centos 6 host system and four Centos 6 virtual machines
>> installed as master, metalogger and two chunk servers.
>> Installing everything went smoothly and I can see the two chunk server in
>> the cgi stats interface. Both chunk servers have a 1gb partition formatted
>> as ext4 mounted under /mnt/data for the storage.
>> The cgi interface shows 2GiB total space and 1.3GiB available.
>>
>> I can mount the filesystem on a client and df -h shows 1.4G of free space
>> which looks ok. However the moment I try to copy a file no matter how small
>> I immediately get a "No space left on device" error. Doing a "ls" after
>> that shows the file on the filesystem with a size of 0 bytes. A "mkdir
>> /mnt/mfs/test" for example works fine though.
>>
>> I see the following in the syslog on the client:
>>
>> Jul 29 21:47:11 centos6 mfsmount[9930]: file: 6, index: 0 - fs_writechunk
>> returns status 21
>> Jul 29 21:47:11 centos6 mfsmount[9930]: error writing file number 6: ENOSPC
>> (No space left on device)
>>
>> Any ideas what the problem could be?
>>
>> Regards,
>>      Dennis
>>
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