Hi everybody, we just stumbled over a problem where the rbd image does not shrink, when files are removed. This only happenes when the rbd image is partitioned.
* We tested it with centos8/ubuntu20.04 with ext4 and a gpt partition table (/boot and /) * the kvm device is virtio-scsi-pci with krbd * Mount option discard is set * command to create large file: dd if=/dev/zero of=testfile bs=64M count=1000 * the image grows in the size we expect * when we remove the testfile the rbd image stays at the size * we wen recreate the deleted file with the command the rbd image grows further * using fstrim does not work * adding a new disk and initialize the ext4 directly on the disk (wihtout partitioning) the trim does work and the rbd image shrinks back to a couple GB * we use ceph 14.2.21 Does anybody experienced the same issue and maybe know how to solve the problem? -- Die Selbsthilfegruppe "UTF-8-Probleme" trifft sich diesmal abweichend im groüen Saal. _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
