nandfs fills up without activity

[Ronald Klop]

Hello,

I still have this issue on an up-to-date 10-ALPHA2 Sheevaplug.
My / is on nandfs with tmpfs as /tmp and /var symlinked to an ufs  
usb-stick. So there is almost no activity on /.

This is the table from a periodic cron.
Filesystem        1024-blocks   Used Avail Capacity iused ifree %iused   
Mounted on
/dev/gnand0s.root      515328 416896 98432    81%   12612     0  100%   /
/dev/gnand0s.root      515328 417536 97792    81%   12612     0  100%   /
/dev/gnand0s.root      515328 417792 97536    81%   12612     0  100%   /

Du does not give a difference in allocated space for reachable files. A  
reboot does not free space so I don't suspect a deleted file.

In the mentioned thread (about a year ago) Mateusz said he can reproduce  
the problem. So I cc him.

Ronald.

-- old info about the same issue is copy-pasted below --

On Sun, 30 Dec 2012 15:17:56 +0100, Ronald Klop  
<ronald-freebsd8 at klop.yi.org> wrote:

> Mateusz,
>
> I found this similar issue from last november.
> http://freebsd.1045724.n5.nabble.com/NANDFS-eats-itself-up-td5764878.html
> Do you have anything new about this? I'm willing to test anything.
>
> Regards,
> Ronald.
>
> On Sun, 30 Dec 2012 13:55:02 +0100, Ronald Klop  
> <ronald-freebsd8 at klop.yi.org> wrote:
>
>> Hi,
>>
>> I just noticed my nandfs is filling up on a clean install.
>> Running a sheevaplug.
>> FreeBSD sh10.klop.ws 10.0-CURRENT FreeBSD 10.0-CURRENT #10: Sat Dec 15  
>> 18:26:46 CET 2012      
>> root at mailjail.klop.ws:/usr/obj/arm.arm/usr/src/sys/SHEEVAPLUG  arm
>>
>>  From the daily messages to root.
>> Disk status:
>> Filesystem           Size    Used   Avail Capacity  Mounted on
>> root at sh10:/var/mail # grep gnand root
>> /dev/gnand0s.root    503M    286M    216M    57%    /
>> /dev/gnand0s.root    503M    299M    203M    59%    /
>> /dev/gnand0s.root    503M    316M    187M    63%    /
>> /dev/gnand0s.root    503M    329M    173M    65%    /
>> /dev/gnand0s.root    503M    341M    161M    68%    /
>> /dev/gnand0s.root    503M    341M    161M    68%    /
>> /dev/gnand0s.root    503M    353M    149M    70%    /
>> /dev/gnand0s.root    503M    363M    139M    72%    /
>> /dev/gnand0s.root    503M    375M    127M    75%    /
>> /dev/gnand0s.root    503M    388M    114M    77%    /
>> /dev/gnand0s.root    503M    399M    103M    79%    /
>> /dev/gnand0s.root    503M    412M     91M    82%    /
>> /dev/gnand0s.root    503M    423M     79M    84%    /
>> /dev/gnand0s.root    503M    435M     68M    86%    /
>> /dev/gnand0s.root    503M    446M     57M    89%    /
>>
>> I did not activate any useful daemons.
>> root at sh10:/var/mail # cat /etc/rc.conf
>> hostname="sh10.klop.ws"
>> ifconfig_DEFAULT="DHCP"
>>
>> fsck_y_enable="YES"
>> background_fsck="NO"
>>
>> sshd_enable="YES"
>> ntpd_enable="YES"
>> ntpd_sync_on_start="YES"
>>
>> I just rebooted the machine to make sure no deleted files are still  
>> open.
>> Df still shows 51MB available while du only shows 227MB in use.
>> What can be happening here?
>>
>> Ronald.
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