Re: ceph fs mv does copy, not move

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The move seems to work as expected on recent kernels. I get O(1) with this version:

# uname -r
5.9.9-1.el7.elrepo.x86_64

I cannot upgrade on the machine I need to do the move on. Is it worth trying a newer fuse client, say from the nautilus or octupus repo?

Best regards,
=================
Frank Schilder
AIT Risø Campus
Bygning 109, rum S14

________________________________________
From: Frank Schilder <frans@xxxxxx>
Sent: 22 June 2021 11:15:06
To: ceph-users@xxxxxxx
Subject:  ceph fs mv does copy, not move

Dear all,

some time ago I reported that the kernel client resorts to a copy instead of move when moving a file across quota domains. I was told that the fuse client does not have this problem. If enough space is available, a move should be a move, not a copy.

Today, I tried to move a large file across quota domains testing botn, the kernel- and the fuse client. Both still resort to a copy even though this issue was addressed quite a while ago (https://lists.ceph.io/hyperkitty/list/ceph-users@xxxxxxx/thread/44AEIHNEGKV4VGCARRTARGFZ264CR4T7/#XY7ZCE3KWHI4QSUNZHDWL3QZQFOHXRQW). The versions I'm using are (CentOS 7)

# yum list installed | grep ceph-fuse
ceph-fuse.x86_64                      2:13.2.10-0.el7               @ceph

# uname -r
3.10.0-1160.31.1.el7.x86_64

Any suggestions how to get this to work? I have to move directories containing 100+ TB.

Many thanks,
=================
Frank Schilder
AIT Risø Campus
Bygning 109, rum S14
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