[Lustre-discuss] Reclaiming Reserved Disk Space

[Wojciech Turek]

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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