If it's just test data, I can give you a recipe for moving it with xfs_db, I think - if you're willing to lose the filesystem if something goes wrong. ;) -Eric On 11/3/16 4:14 PM, Marcin Sura wrote: > Hi, > > We are building huge test system with hundreds TB of data. We want to > execute some performance tests without and with external log device. > Filling in the data is a time consuming process, so my first idea was > to create the filesystem without external log, execute the tests and > then add external log and repeat the tests without recreating the > filesystem. Now I know I have to do this. Thanks > > BR > Marcin > > 2016-11-03 20:57 GMT+01:00 Eric Sandeen <sandeen@xxxxxxxxxxx>: >> On 11/3/16 2:28 PM, Marcin Sura wrote: >>> Hi, >>> >>> I've created filesystem with default mkfs.xfs command, started to use >>> the filesystem. Few days later I've got nice SSD-based lun which can >>> be used as external log device. >>> >>> Can I add that lun as external log device to an existing filesystem? How? >>> >>> BR >>> Marcin >> >> There is no supported mechanism for doing this. It can be done with xfs_db >> disk-editing surgery, but that's not really recommended. >> >> What is your reason for wanting to move the log? >> >> -Eric > -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
