[Users] strange permission issue on migration

[Dmitry Konstantinov]

I am pretty sure it's not permissions however that's what reported by
vzmigrate.

offline migration fails with the messages:

copy CT private /vz/private/24060
rsync : rsync: rename "/vz/private/24060/root.hdd/.root.hds.dkD99G" ->
"root.hdd/root.hds": Operation not permitted (1)
rsync : rsync: rename "/vz/private/24060/root.hdd/.root.hds.{ed04b7fe-4084-42ec-864d-edc1ae4b03d5}.eVcsbD"
-> "root.hdd/root.hds.{ed04b7fe-4084-42ec-864d-edc1ae4b03d5}":
Operation not permitted (1)
rsync : rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1055)
[sender=3.0.9]

Subsequent runs show similar errors, removing private area on
destination (we use --keep-dst) doesn't help, renaming it so the
next attempt to migrate would use different location on the device
doesn't help. However the migration to another server usually works.

Any ideas what might be the problem?

BTW is there any reason for vzmigrate to create a snapshot when
migrating offline?

Thanks,
Dmitry.