Re: [Moosefs-users] Clean up chunk files

[Ricardo J. B. <ric...@da...>]

El Miércoles 25 Agosto 2010, Anh K. Huynh escribió:
> Hi,
>
> I have a MFS system with two chunk disks
> 	* a disk with size 05 GB (mounted as /mnt/mfs_m0)
> 	* a disk with size 30 GB (mounted as /mnt/mfs_m1)
>
> The MFS disk is /tmp/mfs_c0 was reported to have 1GB in size, as below:
>
> /-------------------------------------------------------
> Filesystem            Size  Used Avail Use% Mounted on
> /mnt/mfs_chunk_db1_0  5.0G  4.4G  288M  94% /mnt/mfs_m0
> /mnt/mfs_chunk_db1_1   30G   27G  1.2G  96% /mnt/mfs_m1
> mfs#10.0.0.10:9421
>                      1001M     0 1001M   0% /tmp/mfs_c0
>
> ls /tmp/mfs_c0/
>
> \-------------------------------------------------------
>
> All these disks were completely free (use 0%) before I tried to write a
> very large file to MFS mount point. During the writing process, my program
> detected that disk was full and it aborted. Unfortunately, MFS server
> couldn't recovery from such error, and though it reported that MFS disk is
> free (0% used), I can't write anything to it. Moreover, any chunk disks are
> full: such disks contains many chunk files that aren't valid anymore.
>
> How to recovery from such error? and How to clean up chunk files on chunk
> disks? How to know if any chunk files are valid for used?
>
> Thanks for your helps.

Really strange, are you sure you didn't write the file to /mnt/mfs_m0 directly 
instead of /tmp/mfs_c0 ?

What are /mnt/mfs_chunk_db1_0 and /mnt/mfs_chunk_db1_1, are those loop files? 
(hinted by your previous email)

Regards,
-- 
Ricardo J. Barberis
Senior SysAdmin - I+D
Dattatec.com :: Soluciones de Web Hosting
Su Hosting hecho Simple..!