[Lustre-discuss] Reclaiming Reserved Disk Space

[Wojciech Turek]

 I forgot to ask, is setting reserved % to 0 is safe on Lustre filesysytem?

On 25 November 2010 19:15, Wojciech Turek <wjt27 at cam.ac.uk> wrote:

> I am trying to reclaim the default 5% of reserved disk space on Lustre
> filesystem following procedure describe in the Lustre manual (chapter
> 23.3.10). File system is in use and I would like to avoid any downtime.
>
> [root at oss17 ~]# tune2fs -m 1 /dev/sdg
> tune2fs 1.41.12.2.ora1 (14-Aug-2010)
> tune2fs: MMP: device currently active while trying to open /dev/sdg
>
> I understand it is the MMP flag which prevent tune2fs to access the device,
> is there a way to work around this or is my only option to umount OSTs (eek,
> downtime)
>
> Best regards,
>
> Wojciech
>
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