In the man page it says the following: Because lfs_migrate is not yet closely integrated with the MDS, it cannot determine whether a file is currently open and/or in-use by other applications or nodes. That makes it UNSAFE for use on files that might be modified by other applications, since the migrated file is only a copy of the current file, and this will result in the old file becoming an open-unlinked file and any modifications to that file will be lost.
Is this still the case? Is there a better way to disable OSTs while keeping the filesystem live? Background: We need to take a OSS enclosure that hosts multiple OSTs offline for hardware maintenance, I'd like to do this without bringing Lustre as a whole down. I made sure there is enough space on the other OSTs to house the contents of the machine going offline and am now about to move things. Thanks, Eli
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