Re: Bluestore migration: per-osd device copy

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



I really should read these emails more carefully... Sorry, thanks for pointing that out. I haven't done the filestore migration per OSD. I created a filestore OSD in my lab setup to play around with ceph-objectstore-tool but I couldn't find anything except for '--op dup' but it's not really clear what exactly that does. I figured it could be something like "duplicate" and tried a couple of different approaches but none of them succeeded.

Maybe someone else has more insights.


Zitat von Chris Dunlop <chris@xxxxxxxxxxxx>:

Hi Eugen,

Reminder: I'm looking for guidance / hints on how to migrate from filestore to bluestore using a "per-osd device copy":

https://docs.ceph.com/en/latest/rados/operations/bluestore-migration/#per-osd-device-copy

On Fri, Oct 09, 2020 at 07:03:33AM +0000, Eugen Block wrote:
I think by "copy function" would be the "bluefs-bdev-migrate" command from ceph-bluestore-tool, this is an excerpt from the man paage:

It looks like ceph-bluestore-tool is purely about dealing with bluestore osds, there's no facility to migrate from filestore to bluestore.

There have been several threads about the process on this list, I don't have a link at hand right now.

I've not been able to find any threads relating to migrating from filestore to bluestore using a per-osd device copy - i.e. where the osd data is copied directly from an original filestore store to a new bluestore store, then the new store "becomes" the original osd.

The advantage of doing this would be to remove the rebalancing involved in the simple method of creating a new bluestore osd and marking out the old filestore osd (then rinse and repeat until all filestores have been replaced).

Cheers,

Chris


_______________________________________________
ceph-users mailing list -- ceph-users@xxxxxxx
To unsubscribe send an email to ceph-users-leave@xxxxxxx



[Index of Archives]     [Information on CEPH]     [Linux Filesystem Development]     [Ceph Development]     [Ceph Large]     [Ceph Dev]     [Linux USB Development]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [xfs]


  Powered by Linux