[lustre-discuss] Making a copy of an OST
rs1 at aps.anl.gov
Wed Nov 21 21:32:11 PST 2018
Lustre Server OS Version: CentOS 7.4
Lustre Server version: 2.10.2
Server Kernel version: 3.10.0-693.5.2
I have an older disk array with a hardware failure. I suspect the
drives and data are still valid.
What I plan to do is migrate the data off of a similar model array, move
the drives and migrate the data from the failed array. In order to do
this, I need to migrate just an OST to a different device. I can't use
lfs_migrate, because that works at the file level. I suspect the best
route to go is to create a new device and use "dd" to copy the contents
of the source device to the target device.
Is there a better solution?
Anything I should be aware of regarding dd and an OST?
The arrays in question are enterprise class systems with caching
controllers configured for RAID6.
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