27 Mar
2020
27 Mar
'20
2:29 p.m.
If automatic
migration is not possible, is there at least an efficient way to
*find* everything with special ceph attributes?
IIRC, you can still see all these attributes by querying for the
"ceph" xattr. Does that not work for you?
De all,
we are in the process of migrating a ceph file system from a 2-pool layout (rep meta+ec
data) to the recently recommended 3-pool layout (rep meta, per primary data, ec data). As
part of this, we need to migrate any ceph xattribs set on files and directories. As these
are no longer discoverable, how would one go about this?
Special cases:
How to migrate quota settings?
How to migrate dir- and file-layouts?
Ideally, at least quota attributes should be transferable on the fly with tools like
rsync.
These are all policy decisions that seem pretty cluster-specific to
me. We hid them in the first place because exposing ceph xattrs to
rsync was breaking it horribly.
If automatic migration is not possible, is there at
least an efficient way to *find* everything with special ceph attributes?
IIRC, you can still see all these attributes by querying for the
"ceph" xattr. Does that not work for you?
Thanks and best regards,
=================
Frank Schilder
AIT Risø Campus
Bygning 109, rum S14
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