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bio website linkedin.com/in/dyasny
location Canada
age 34
visits member for 5 years
seen 6 hours ago

Open source virt geek


Jul
17
comment rhev and number of cpus
@AndrewSchulman Itamar leads the development of RHEV, he knows.
Jul
15
comment Why has CD/DVD host passthrough been disabled in CentOS 7 \ RHEL 7?
Turn the cdrom into an image using dd if=/dev/cdrom of=/path/to/image.iso and attach the ISO.
Jul
7
comment Migrating physical machine to KVM
can't always get what you want, eh?
Jun
22
comment DRBD vs. GlusterFS for replication
what does DFS have to do with gluster/drbd?
Jun
18
comment Linux - KVM - very slow disk io
I have a RHEL machine with the host and the guests providing very similar IO throughput counts. Actually, that's 8 RHEL machines and about 90 guests.
Jun
18
comment Linux - KVM - very slow disk io
The host of course. Self compiling is nice, but stock stuff gets tested and verified
Jun
18
comment Linux - KVM - very slow disk io
Can you reproduce this performance with a fresh Fedora or RHEL build?
Jun
15
comment linux KVM guests network performance is slower than host
Ubuntu 10? Any ubuntu, but especially older versions are known for problematic virtualization performance. Try with a fresh Fedora or RHEL build.
Jun
12
comment CentOS 6 KVM Host cannot connect to Internet while VMs can
what happens when you actually try to resolve an external hostame, e.g.use dig or nslookup?
May
11
comment KVM image size has changed
are there any snapshots used? what exactly do you have under /vm ?
May
7
comment KVM image size has changed
what does df and du show inside the VM? How was the disk image created?
Apr
25
comment Hyper V with a DELL MD3000 Poor I/O
I would say you might have Hyper-V to blame - bad drivers, ineffective virtualization overhead handling etc. Are you using VHDX btw?
Apr
22
comment How does intel RAID Keys work on intel server motherboard and how do we set up hardware RAID?
or get a good JBOD controller and go with software raid, if the budget is tight
Apr
22
comment How does intel RAID Keys work on intel server motherboard and how do we set up hardware RAID?
Why not use a normal brandname server? You get support and proper warranty and don't need to puzzle over illogical things.
Apr
22
comment Maximizing rsync performance and throughput - directly-connected gigabit servers
yeah, It definitely looks like tar is the next step, if not LVM snapshots and dd. One question though - I have lots of links and quite a few sparse files. Will tar perserve sparsity?
Apr
21
comment Maximizing rsync performance and throughput - directly-connected gigabit servers
yup, iperf shows 991mbits/s, I guess it's te dataset that was so slow
Apr
20
comment Maximizing rsync performance and throughput - directly-connected gigabit servers
I'll be switching to block based backups later on, and I intend to pipe dd through nc then. but right now, I'm stuck with two huge backups then need to be moved off of the main host, so I can create an LVM system there
Apr
20
comment Maximizing rsync performance and throughput - directly-connected gigabit servers
I would, if I had local space to spare. This is pretty huge, even with a fully populated DAS box
Apr
20
comment Maximizing rsync performance and throughput - directly-connected gigabit servers
got anything I could read on this one? ZFS or opendedup was the plan, but if it's not the best plan, I'll start looking at something else...
Apr
20
comment Maximizing rsync performance and throughput - directly-connected gigabit servers
the backup machine has 64Gb of RAM, it should be able to handle the size. What else might be the problem? for ZFS world of pain I mean :) the main host will not be using ZFS of course, plain old ext4 only