Lustre 1.6 Operations Manual

3. Mount the filesystem.
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For 2.4 kernels, run:
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mount -t ext3 {dev} /mnt/mds
For 2.6 kernels, run:
mount -t ldiskfs {dev} /mnt/mds
4. Change to the new filesystem mount point, run:
cd /mnt/mds
5. Restore the filesystem backup, run:
tar xzvpf {backup file}
6. Restore the filesystem EAs, run:
setfattr --restore=ea.bak (not required for OST devices)
7. Remove the recovery logs (now invalid), run:
rm OBJECTS/* CATALOGS
Note – If the filesystem is in use during the restore process, run the lfsck tool (part
of e2fsprogs) to ensure that the filesystem is coherent.
It is not necessary to run this tool if the backup of all device filesystems occurs at the
same time after stopping the entire Lustre filesystem. After completing the
filesystem should be immediately usable without running lfsck. There may be few
I/O errors reading from files that are present on the MDS, but not on the OSTs.
However, the files that are created after the MDS backup are not visible or accessible.
Chapter 15 Backup and Restore 15-5