Hello group, I''m trying to exclude a dead OST but I''m having trouble. When I use `df`, it hangs until I use `lctl --device "" deactivate`. Environment: * Lustre 1.8.3 RHEL5 on server-side * Lustre 1.8.2 patchless client-side From reading mailing-list entries and the Lustre 1.8 documentation, the deactivating has to be done on the server as well as the clients. The server-side deactivation seems only to forbid creation of new objects on the OST. The OST shows up as an inactive device with `lfs` on the client after mounting (regardless of mount options). mount -t lustre -o localflock,exclude=eu01-OST0003 192.168.21.173 at tcp1:/eu01 /tmp/mnt When mounting with the exclude= option, it should disable the OST completely on the client. My problem now is, that the option does not seem to do what I expect. Should the exclude= option prevent df from locking up? Jonathan Buch # lfs df -h UUID bytes Used Available Use% Mounted on eu01-MDT0000_UUID 24.4G 3.4G 19.7G 13% /tmp/mnt[MDT:0] eu01-OST0000_UUID 3.5T 3.1T 224.0G 88% /tmp/mnt[OST:0] eu01-OST0001_UUID 3.7T 3.2T 313.5G 86% /tmp/mnt[OST:1] eu01-OST0002_UUID 3.7T 3.3T 146.0G 91% /tmp/mnt[OST:2] eu01-OST0003_UUID : inactive device eu01-OST0004_UUID 889.2G 488.6G 355.4G 54% /tmp/mnt[OST:4] eu01-OST0005_UUID 6.3T 2.3T 3.7T 36% /tmp/mnt[OST:5] eu01-OST0006_UUID 6.3T 2.5T 3.4T 40% /tmp/mnt[OST:6] filesystem summary: 24.2T 14.9T 8.1T 61% /tmp/mnt -- --------------------------------------------------------------- Jonathan Buch, B.Sc. Karlsruhe University of Applied Sciences Institute of Materials and Processes (IMP) Moltkestrasse 30 D-76133 Karlsruhe Germany E-mail: jonathan.buch at hs-karlsruhe.de Phone: +49 721 925 1415 Fax: +49 721 925 1503 http://www.iaf.hs-karlsruhe.de/ice ----------------------------------------------------------------