Hi All, What would be the proper way to preventively replace a DB/WAL SSD (when it is nearing it's DWPD/TBW limit and not failed yet).
It hosts DB partitions for 5 OSD's Maybe something like: 1) ceph osd reweight 0 the 5 OSD's 2) let backfilling complete 3) destroy/remove the 5 OSD's 4) replace SSD 5) create 5 new OSD's with seperate DB partition on new SSD When these 5 OSD's are big HDD's (8TB) a LOT of data has to be moved so i thought maybe the following would work: 1) ceph osd set noout 2) stop the 5 OSD's (systemctl stop) 3) 'dd' the old SSD to a new SSD of same or bigger size 4) remove the old SSD 5) start the 5 OSD's (systemctl start) 6) let backfilling/recovery complete (only delta data between OSD stop and now) 6) ceph osd unset noout Would this be a viable method to replace a DB SSD? Any udev/serial nr/uuid stuff preventing this to work? Or is there another 'less hacky' way to replace a DB SSD without moving too much data? Kind regards, Caspar
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