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2012 Jun 23
4
Can't run KVM Virtual Machines on a Gluster volume
...error Process exited while reading console log output: char device redirected to /dev/pts/1 qemu-kvm: -drive file=/virtual-machines/Ubuntu_12.img,if=none,id=drive-virtio-disk0,format=qcow2,cache=none: could not open disk image /virtual-machines/Ubuntu_12.img: Permission denied Regards, Fernando Frediani -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://supercolony.gluster.org/pipermail/gluster-users/attachments/20120623/7347e5fc/attachment.html>
2012 Jun 14
4
RAID options for Gluster
I think this discussion probably came up here already but I couldn't find much on the archives. Would you able to comment or correct whatever might look wrong. What options people think is more adequate to use with Gluster in terms of RAID underneath and a good balance between cost, usable space and performance. I have thought about two main options with its Pros and Cons No RAID (individual
2012 Aug 13
1
Problem with too many small files
...every node a copy of the directory tree. I think Isilon does that and there is probably a lot to be learned from them which seems quiet mature technology. Could also have another interesting thing added in the future, local SSD to keep the file system metadata for faster access. Regards, Fernando Frediani Lead Systems Engineer [Description: Description: Description: Description: Description: cid:image003.png at 01CD637B.AB2C8040] 260-266 Goswell Road, London, EC1V 7EB, United Kingdom sales: +44 (0) 20 7150 3800 ddi: +44 (0) 20 7150 3803 fax: +44 (0) 20 7336 8420 web: http://www.qubenet.net...
2012 Jun 11
1
"mismatching layouts" flooding in the logs
I have the following appended to gluster logs at around 100kB of logs per second, on all 10 gluster servers: [2012-06-11 15:08:15.729429] I [dht-layout.c:682:dht_layout_dir_mismatch] 0-sites-dht: subvol: sites-client-41; inode layout - 966367638 - 1002159031; disk layout - 930576244 - 966367637 [2012-06-11 15:08:15.729465] I [dht-common.c:525:dht_revalidate_cbk] 0-sites-dht: mismatching layouts
2012 Nov 02
8
Very slow directory listing and high CPU usage on replicated volume
Hi all, I am having problems with painfully slow directory listings on a freshly created replicated volume. The configuration is as follows: 2 nodes with 3 replicated drives each. The total volume capacity is 5.6T. We would like to expand the storage capacity much more, but first we need to figure this problem out. Soon after loading up about 100 MB of small files (about 300kb each), the
2012 Jun 07
2
Performance optimization tips Gluster 3.3? (small files / directory listings)
Hi, I'm using Gluster 3.3.0-1.el6.x86_64, on two storage nodes, replicated mode (fs1, fs2) Node specs: CentOS 6.2 Intel Quad Core 2.8Ghz, 4Gb ram, 3ware raid, 2x500GB sata 7200rpm (RAID1 for os), 6x1TB sata 7200rpm (RAID10 for /data), 1Gbit network I've it mounted data partition to web1 a Dual Quad 2.8Ghz, 8Gb ram, using glusterfs. (also tried NFS -> Gluster mount) We have 50Gb of
2012 Jun 01
3
Striped replicated volumes in Gluster 3.3.0
Hi all, I'm very happy to see the release of 3.3.0. One of the features I was waiting for are striped replicated volumes. We plan to store KVM images (from a OpenStack installation) on it. I read through the docs and found the following phrase: "In this release, configuration of this volume type is supported only for Map Reduce workloads." What does that mean exactly? Hopefully not,