Re: [Users] SLOW I/O performance

Additionally, I've just seen this on the console ovirt engine web console : Storage domain storage_domain_2 experienced a high latency of 6.76029706001 seconds from host HV2. This may cause performance and functional issues. Please consult your Storage Administrator Alex On 21 January 2013 12:38, Alex Leonhardt <alex.tuxx(a)gmail.com&gt; wrote: > Hi All, > > This is my current setup: > > > HV1 has : > storage_domain_1 > is SPM master > > HV2 has : > storage_domain_2 > is normal (not master) > > > HV1 has storage_domain_1 mounted via 127.0.0.1 (network name, but hosts > entry sends it to loopback) > > HV2 has storage_domain_2 mounted via 127.0.0.1 (network name, but hosts > entry sends it to loopback) > > > All VMs on HV1 have its storage set to storage_domain_1 and all VMs on > HV2 have their storage set to storage_domain_2 > > > My problem now is that after I finally created all the disks on HV2 over > a super slow mgmt network (ovirtmgmt), it's a 100 Mbit only, I'm now trying > to kickstart all the VMs I created, however, formatting the disk is taking > for ever ~ 20-30mins for 12 GB, that is roughly how long it took to create > the disks over the 100Mbit link. > > The weirdness really starts with HV2, as all VMs on HV1 with disks on > storage_domain_1 have "good" I/O throughput, all VMs on HV2 are awfully > slow in reading/writing to disk. > > I've tried some network settings to increase throughput, but those didnt > help / had no effect at all. > > Anyone come across this issue ? Is it something to do with the ovirtmgmt > interface only being 100Mbit ? > > Alex > > > > > -- > > | RHCE | Senior Systems Engineer | www.vcore.co | www.vsearchcloud.com | > -- | RHCE | Senior Systems Engineer | www.vcore.co | www.vsearchcloud.com |