Thanks, I understand that. I was just explicitly asking for the
conversion of an existing directory (created without subvolume) with
xattr as mentioned in the thread [2]. Anyway, apparently it works like
Anh Phan stated in his response, moving an existing directory to the
subvolumegroup subdir makes it a subvolume. So there's no need for
xattr here.
Thanks,
Eugen
Zitat von Milind Changire <mchangir@xxxxxxxxxx>:
well, you should've used the ceph command to create the subvol
it's much simpler that way
$ ceph fs subvolume create mycephfs subvol2
The above command creates a new subvol (subvol2) in the default
subvolume group.
So, in your case the actual path to the subvolume would be
/mnt/volumes/_nogroup/subvol2/<uuid>
On Tue, Aug 22, 2023 at 4:50 PM Eugen Block <eblock@xxxxxx> wrote:
Hi,
while writing a response to [1] I tried to convert an existing
directory within a single cephfs into a subvolume. According to [2]
that should be possible, I'm just wondering how to confirm that it
actually worked. Because setting the xattr works fine, the directory
just doesn't show up in the subvolume ls command. This is what I tried
(in Reef and Pacific):
# one "regular" subvolume already exists
$ ceph fs subvolume ls cephfs
[
{
"name": "subvol1"
}
]
# mounted / and created new subdir
$ mkdir /mnt/volumes/subvol2
$ setfattr -n ceph.dir.subvolume -v 1 /mnt/volumes/subvol2
# still only one subvolume
$ ceph fs subvolume ls cephfs
[
{
"name": "subvol1"
}
]
I also tried it directly underneath /mnt:
$ mkdir /mnt/subvol2
$ setfattr -n ceph.dir.subvolume -v 1 /mnt/subvol2
But still no subvolume2 available. What am I missing here?
Thanks
Eugen
[1]
https://lists.ceph.io/hyperkitty/list/ceph-users@xxxxxxx/thread/G4ZWGGUPPFQIOVB4SFAIK73H3NLU2WRF/
[2] https://www.spinics.net/lists/ceph-users/msg72341.html
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Milind
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