Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux (Ubuntu Bionic)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1794766
Title:
nbd device size not updated correctly
Status in linux package in Ubuntu:
Confirmed
Status in linux source package in Bionic:
Confirmed
Status in linux source package in Cosmic:
Confirmed
Bug description:
nbd does not handle a disk resize correctly. This has been fixed
upstream:
https://github.com/torvalds/linux/commit/639812a1ed9bf49ae2c026086fbf975339cd1eef
On Ubuntu Bionic with a "4.15.0-34-generic #37-Ubuntu" kernel a resize
of a (Ceph) rbd image does not propagate to a "rbd-nbd" mapped disk,
until it's unmapped / remapped. See
https://tracker.ceph.com/issues/23137. Other "nbd" mapped disks might
suffer from the same behaviour (not tested).
Ubuntu mainline kernel (4.19-rc5) works correct with regards to this
rbd resize rbd-nbd mapped image.
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