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October 2023

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ESXI 6.7 client creating Thick Eager zeroed vmdk files using ceph fsal
by Robert Toole 07 Jan '25

07 Jan '25

Hi, I have a 3 node Ceph octopus 15.2.7 cluster running on fully up to date Centos 7 with nfs-ganesha 3.5. After following the Ceph install guide https://docs.ceph.com/en/octopus/cephadm/install/#deploying-nfs-ganesha I am able to create a NFS 4.1 Datastore in vmware using the ip address of all three nodes. Everything appears to work OK.. The issue however is that for some reason esxi is creating thick provisioned eager zeroed disks instead of thin provisioned disks on this datastore, whether I am migrating, cloning, or creating new vms. Even running vmkfstools -i disk.vmdk -d thin thin_disk.vmdk still results in a thick eager zeroed vmdk file. This should not be possible on an NFS datastore, because vmware requires a VAAI NAS plugin to accomplish thick provisioning over NFS before it can thick provision disks. Linux clients to the same datastore can create thin qcow2 images, and when looking at the images created by esxi from the linux hosts you can see that the vmdks are indeed thick: ls -lsh total 81G 512 -rw-r--r--. 1 root root 230 Mar 25 15:17 test_vm-2221e939.hlog 40G -rw-------. 1 root root 40G Mar 25 15:17 test_vm-flat.vmdk 40G -rw-------. 1 root root 40G Mar 25 15:56 test_vm_thin-flat.vmdk 512 -rw-------. 1 root root 501 Mar 25 15:57 test_vm_thin.vmdk 512 -rw-------. 1 root root 473 Mar 25 15:17 test_vm.vmdk 0 -rw-r--r--. 1 root root 0 Jan 6 1970 test_vm.vmsd 2.0K -rwxr-xr-x. 1 root root 2.0K Mar 25 15:17 test_vm.vmx but the qcow2 files from the linux hosts are thin as one would expect: qemu-img create -f qcow2 big_disk_2.img 500G ls -lsh total 401K 200K -rw-r--r--. 1 root root 200K Mar 25 15:47 big_disk_2.img 200K -rw-r--r--. 1 root root 200K Mar 25 15:44 big_disk.img 512 drwxr-xr-x. 2 root root 81G Mar 25 15:57 test_vm These ls -lsh results are the same from esx, linux nfs clients and from cephfs kernel client. What is happening here? Are there undocumented VAAI features in nfs-ganesha with the cephfs fsal ? If so, how do I turn them off ? I want thin provisioned disks. ceph nfs export ls dev-nfs-cluster --detailed [ { "export_id": 1, "path": "/Development-Datastore", "cluster_id": "dev-nfs-cluster", "pseudo": "/Development-Datastore", "access_type": "RW", "squash": "no_root_squash", "security_label": true, "protocols": [ 4 ], "transports": [ "TCP" ], "fsal": { "name": "CEPH", "user_id": "dev-nfs-cluster1", "fs_name": "dev_cephfs_vol", "sec_label_xattr": "" }, "clients": [] } ] rpm -qa | grep ganesha nfs-ganesha-ceph-3.5-1.el7.x86_64 nfs-ganesha-rados-grace-3.5-1.el7.x86_64 nfs-ganesha-rados-urls-3.5-1.el7.x86_64 nfs-ganesha-3.5-1.el7.x86_64 centos-release-nfs-ganesha30-1.0-2.el7.centos.noarch rpm -qa | grep ceph python3-cephfs-15.2.7-0.el7.x86_64 nfs-ganesha-ceph-3.5-1.el7.x86_64 python3-ceph-argparse-15.2.7-0.el7.x86_64 python3-ceph-common-15.2.7-0.el7.x86_64 cephadm-15.2.7-0.el7.x86_64 libcephfs2-15.2.7-0.el7.x86_64 ceph-common-15.2.7-0.el7.x86_64 ceph -v ceph version 15.2.7 (<ceph_uuid>) octopus (stable) The ceph cluster is healthy using bluestore on raw 3.84TB sata 7200 rpm disks. -- Robert Toole rtoole(a)tooleweb.ca 403 368 5680

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Announce Push of V5.6
by Frank Filz 20 Oct '23

20 Oct '23

Branch next Tag:V5.6 Merge Highlights * CEPH: Disable nonblocking-io - the cephfs filesystem just isn't ready for it yet. * CEPH: Add capability to share ceph client between exports * MDCACHE: try_release should set up op_context * Add documentation for quoted strings in config. * CMAKE: Fix use of USE_CB_SIMULATOR and USE_DBUS * PSEUDOFS: Add some debug * GLUSTER: in glusterfs_copy_my_fd insert_fd_lru belongs in the is_dup path * mdcache_lru_pkginit now properly initializes Cache_FDs from mdcache_param. * Fixed a couple issues raised by UBSAN. * Fixed a couple issues with json * nfs_proto_tools: Change the dynamicinfo field to be concrete * CRASH:Memory access violation in posix_acl_2_fsal_acl * main: periodically poke malloc()/free() to release memory * getquota to support 64bit quota using bsize for scaling Signed-off-by: Frank S. Filz <ffilzlnx(a)mindspring.com> Contents: 65e868552 Frank S. Filz V5.6 bd07142ad Michael Diederich getquota to support 64bit quota using bsize for scaling d59e65c0a Kaleb S. KEITHLEY main: periodically poke malloc()/free() to release memory fae6499dc Arnab Tah CRASH:Memory access violation in posix_acl_2_fsal_acl d5f4e5e96 Assaf Yaari nfs_proto_tools: Change the dynamicinfo field to be concrete bcd1ee81d Trupti Shete Incorrect values for ganesha_stats json option aa91f96a6 Trupti Shete Failed to get output of option ganesha_stats json f975b38e6 David Rieber UBSAN reports misaligned access to sockaddr_t. 6c8d8269d David Rieber Fix bit shifting issue reported by UBSAN. 3e1346c49 David Rieber mdcache_lru_pkginit now properly initializes Cache_FDs from mdcache_param. dcf0387ee Yevhenii Huzii GLUSTER: in glusterfs_copy_my_fd insert_fd_lru belongs in the is_dup path 110c7094d Frank S. Filz CEPH: Add capability to share ceph client between exports c96246cb3 Frank S. Filz MDCACHE: try_release should set up op_context bb43dbb2a Frank S. Filz PSEUDOFS: Add some debug 7134bb27a Frank S. Filz Add documentation for quoted strings in config. 4cbf7d603 Frank S. Filz CEPH: Disable ceph nonblocking-io for now - it doesn't work well 2f39cf184 Frank S. Filz CMAKE: Fix use of USE_CB_SIMULATOR and USE_DBUS

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