search for: libgfapi

Good Evening, I have read that libgfapi has been backported to qemu-kvm in RHEL 6.5 (and by virtue CentOS and SL). However I am unable to figure out how to actually make it work as described. Virt-manager still only seems to support glusterfs volumes via fuse. I can use qemu-img to create a disk image on gluster://<server>/<Vol...

Dear All, Very pleased to see that the Redhat 6.5 beta promises "Native Support for GlusterFS in QEMU allows native access to GlusterFS volumes using the libgfapi library" Can I ask if virt-manager & libvirt can control libgfapi mounts? :) or do I need to use ovirt? :( many thanks Jake

Hello, Would you so kind to help me with my problem concerning libgfapi. My host operating system is Ubuntu 14.04 LTS, version of glusterfs is 3.6.2, and version of qemu is 2.0.0. In our environment guest virtual machines periodically go to power-off state 'Powered Off'(Shutdown) with ERROR in /var/log/syslog like: kernel: [5346607.988173] qemu-system-x86[...

Dear gluster experts, I recently want to use jna to bind libgfapi to java. And I have one question. Does libgfapi and fuse mount performance match? The performance translators works for libgfapi too? Thank you very much. -- ???

Hello. I'm playing with libgfapi network disks, over IB and all is working fine, but not disk locking (and true rdma transport). I use virtlockd, and with fuse mount, locking works as expected. But when i converted disk definitions to libgfapi, locks are not created (but qemu starts and works fine). I used direct and indirect l...

Hi guys: Whats the status for documentation on the libgfapi. -- Jay Vyas http://jayunit100.blogspot.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://supercolony.gluster.org/pipermail/gluster-users/attachments/20130104/f659c786/attachment.html>

Hi, I created an encrypted volume which appears to be working fine with FUSE but the volume is supposed to store VM images (master key in place). I noticed some references in libgfapi source code to encryption so I decided to try it out. While attempting to create an image: # qemu-img create -f qcow2 gluster://gluster01/virt0/testing.img 30G Formatting 'gluster://dalpinfglt01/virt0/testing.img', fmt=qcow2 size=32212254720 encryption=off cluster_size=65536 lazy_refcount...

On 03.06.2015 09:58, Igor Yakovlev wrote: > Hello, > > Would you so kind to help me with my problem concerning libgfapi. > > My host operating system is Ubuntu 14.04 LTS, version of glusterfs is > 3.6.2, and version of qemu is 2.0.0. > > In our environment guest virtual machines periodically go to power-off > state 'Powered Off'(Shutdown) with ERROR in /var/log/syslog like: > > k...

Hi, I am currently testing running Openstack instance on Cinder volume with libgfapi. This instance is the Windows instance and i found that when running random 4k write workload, the CPU utilization is very high, 90% CPU utilization with about 86% in privileged time. I also tested the workload with volume from NFS and the CPU utilization is only around 5%. For gluster fuse, the C...

Hello, I'm having an issue with rebooting bricks holding images for live KVM machines (using libgfapi). I have a replicated+distributed setup of 4 bricks (2x2). The cluster contains images for a couple of kvm virtual machines. My problem is that when I reboot a brick containing a an image of a VM, the VM will start throwing disk errors and eventually die. The gluster volume is made like this: #...

...request for review/testing on the CloudStack developers mailinglist too [2], in case there are general CloudStack questions, it might be better to follow-up there. Future work will include adding support for attaching CloudStack Volumes (disk images, files on a Gluster Volume) through the QEMU-libgfapi integration. At the moment, QEMU is started with the path mounted over the fuse-client. Untested patches for that are in the work-in-progress repository on the forge. Anyone who feels like testing and/or helping out is more than welcome. Thanks, Niels [ndevos on #gluster and #gluster-dev on IR...

Hi, After updating glusterfs server to 3.8.5 (from Centos-gluster-3.8.repo) the KVM virtual machines (qemu-kvm-ev-2.3.0-31) that access storage using libgfapi are no longer able to start. The libvirt log file shows: [2016-11-02 14:26:41.864024] I [MSGID: 104045] [glfs-master.c:91:notify] 0-gfapi: New graph 73332d32-3937-3130-2d32-3031362d3131 (0) coming up [2016-11-02 14:26:41.864075] I [MSGID: 114020] [client.c:2356:notify] 0-testvol-client-0: parent t...

Dear support, I need to export gluster volume with LIO for a virtualization system. In this moment I have a very basic test configuration: 2x HP 380 G7(2 * Intel X5670 (Six core @ 2,93GHz), 72GB ram, hd RAID10 6xsas 10krpm, lan Intel X540 T2 10GB) directly interconnected. Gluster configuration is replica 2. OS is Fedora 27 For my tests I used dd and I found strange results. Apparently the

...elease-schedule/ <https://www.gluster.org/community/release-schedule/>) - I want to use https://launchpad.net/~gluster/+archive/ubuntu/glusterfs-3.12 <https://launchpad.net/~gluster/+archive/ubuntu/glusterfs-3.12> as package repository for 3.12 - upgrade Qemu (with build-in support for libgfapi) - https://launchpad.net/~monotek/+archive/ubuntu/qemu-glusterfs-3.12 <https://launchpad.net/~monotek/+archive/ubuntu/qemu-glusterfs-3.12> - (sadly Ubuntu has packages build without libgfapi support) - add third node to replica setup of volume (this is probably most dangerous operation) Bac...

...elease-schedule/ <https://www.gluster.org/community/release-schedule/>) - I want to use https://launchpad.net/~gluster/+archive/ubuntu/glusterfs-3.12 <https://launchpad.net/~gluster/+archive/ubuntu/glusterfs-3.12> as package repository for 3.12 - upgrade Qemu (with build-in support for libgfapi) - https://launchpad.net/~monotek/+archive/ubuntu/qemu-glusterfs-3.12 <https://launchpad.net/~monotek/+archive/ubuntu/qemu-glusterfs-3.12> - (sadly Ubuntu has packages build without libgfapi support) - add third node to replica setup of volume (this is probably most dangerous operation) Bac...

...(New versions) - upgrade GlusterFS to 3.12 LTM version (Ubuntu 16.06 LTS packages are EOL - see https://www.gluster.org/community/release-schedule/) - I want to use https://launchpad.net/~gluster/+archive/ubuntu/glusterfs-3.12 as package repository for 3.12 - upgrade Qemu (with build-in support for libgfapi) - https://launchpad.net/~monotek/+archive/ubuntu/qemu-glusterfs-3.12 - (sadly Ubuntu has packages build without libgfapi support) - add third node to replica setup of volume (this is probably most dangerous operation) Backup Phase - backup "NFS storage? - raw DATA that runs on VMs - stop all...

Mh, not so sure really, using libgfapi and it's been working perfectly fine. And trust me, there had been A LOT of various crashes, reboots and kill of nodes. Maybe it's a version thing ? A new bug in the new gluster releases that doesn't affect our 3.7.15. On Sat, Sep 09, 2017 at 10:19:24AM -0700, WK wrote: > Well, tha...

I'm on 3.10.5. Its rock solid (at least with the fuse mount <Grin>) We are also typically on a somewhat slower GlusterFS LAN network (bonded 2x1G, jumbo frames) so that may be a factor. I'll try to setup a trusted pool to test libgfapi soon. I'm curious as to how much faster it is, but the fuse mount is fast enough, dirt simple to use, and just works on all VM ops such as migration, snaps etc, so there hasn't been a compelling need to squeeze out a few more I/Os. On 9/9/2017 3:08 PM, lemonnierk at ulrar.net wrot...

I'm using gluster for a virt-store with 3x2 distributed/replicated servers for 16 qemu/kvm/libvirt virtual machines using image files stored in gluster and accessed via libgfapi. Eight of these disk images are standalone, while the other eight are qcow2 images which all share a single backing file. For the most part, this is all working very well. However, one of the gluster servers (azathoth) causes three of the standalone VMs and all 8 of the shared-backing-image VMs...

...red io size. (And regarding f_frsize -- in Linux it's a historical workaround for certain bugs in userspace[2] that f_bsize and f_frsize are being kept equal.) However, this has the side effect of getting slightly different values for total and used/free space of a volume when accessed through libgfapi and when through fuse -- because these values are multiples of f_frsize, and libgfapi uses the native f_frsize of the backend (typically 4k), while fuse provides its synthetic f_frsize (typically 128k). So the libfgapi provided sizes are more granular. OTOH, I couldn't find any program in stan...