By Default it is first fit - and that means the first one found with enough capacity. This results in the first one returned by the Db ordering to get allocated first until it has capacity. One can choose the algorithm using vm.allocation.algorithm as Abhi mentioned.
-Prachi -----Original Message----- From: Abhinandan Prateek [mailto:abhinandan.prat...@shapeblue.com] Sent: Monday, April 20, 2015 8:37 AM To: dev@cloudstack.apache.org Subject: Re: Primary Storage algorithm - when having more primary storages Following algorithms are used to select storage pool: random, userconcentratedpod_random: RANDOM userdispersing: Select on basis of least no of volumes firstfitleastconsumed: Select on basis of remaining capacity These values can be set for “vm.allocation.algorithm” global config variable. -abhi > On 20-Apr-2015, at 8:17 pm, Andrija Panic <andrija.pa...@gmail.com> wrote: > > Sorry for my ignorance - meaing completely random (except the scope ?) > > On 20 April 2015 at 16:01, Wei ZHOU <ustcweiz...@gmail.com> wrote: > >> /etc/cloudstack/management/componentContext.xml >> >> <bean id="storagePoolAllocators" >> class="com.cloud.utils.component.AdapterList"> >> <property name="Adapters"> >> <list> >> <ref bean="LocalStoragePoolAllocator"/> >> <ref bean="clusterScopeStoragePoolAllocator"/> >> <ref bean="zoneWideStoragePoolAllocator"/> >> </list> >> </property> >> </bean> >> >> >> 2015-04-20 15:44 GMT+02:00 Andrija Panic <andrija.pa...@gmail.com>: >> >>> Hi people, >>> >>> just wondering - if I have 3 primary storages (3 x NFS boxes) - what is >> the >>> volume alocation algoritm - is it compelte random, or is it like 1 >> client's >>> volume goes always to 1 storage... >>> >>> Any info appreciated ! >>> >>> Thanks, >>> >>> -- >>> >>> Andrija Panić >>> >> > > > > -- > > Andrija Panić Find out more about ShapeBlue and our range of CloudStack related services IaaS Cloud Design & Build<http://secure-web.cisco.com/1PRv-JvQmbK3oYfgoOToEgShQXolmGgMLxjLUpY0FODAUAMVH4eRiAXTSud4jMt2CqCcHg09yk2UrBoy_Z6caE4aRXiSeTsH2pj26KFr8X1QQjP4o4WRxTWrE0NUVkD0xFN7aXwTXBR0OSXuGYYXHvrKDJ9YRYER_fuh_Qg8zoraTz8M1EtjTh2Og0yzlgahe/http%3A%2F%2Fshapeblue.com%2Fiaas-cloud-design-and-build%2F%2F> CSForge – rapid IaaS deployment framework<http://secure-web.cisco.com/1xqIwQE4oaptduHj2eM0C5Xak_ej-2RW-pw2UnrLy-WxErqQYIcZ-Ks2eBzC9wG5mXkux5dYNWycwQ0em7FHd68FVBp9V_NOjVigLOffysYbM1R4UjuUFm1Nf-ZQc3s7TKGIYaeXzuNim-qXPFQEkotJ-Ej5-ACppDG9xv5CRnbmybT0hWMkbODY-y5gF3zPt/http%3A%2F%2Fshapeblue.com%2Fcsforge%2F> CloudStack Consulting<http://secure-web.cisco.com/1BJ6ln-uVs-Unp3xam7jwZFUOckTBvgsLnG4WEQ6J5LxCozdXLNW7sOmlQ2HU9201euLb-2KzG3yEL7yPM_mUiSW-F6JZziSX_NOB_TDWs86ZpQL92VF8lXBoJc4oEJMgbC1N4fvmpr_v46W3erreM_050Cz4G1wPFuIcan271v6CYFPRXps0jBPLO6CFlikH/http%3A%2F%2Fshapeblue.com%2Fcloudstack-consultancy%2F> CloudStack Software Engineering<http://secure-web.cisco.com/19vJTGBujOo9_SZqEEcXrQuPfPleKldd1EC4Tpolrykx-0aRbmVK5EhvLY9N0GUKpaUVnsaLR8mJ0c-TVjB5sSge55QzFZpkYrAWGq31uT_itILAZUr9Hjijv0X9UVGE2mt2Qey31f-xcJDxB2XK-Iww-MKol6ho683JUbVcLRTPC9eW-u2-Je4jyJbOItt73/http%3A%2F%2Fshapeblue.com%2Fcloudstack-software-engineering%2F> CloudStack Infrastructure Support<http://secure-web.cisco.com/19CvSa6gGGillRrhNixj3SL7LBX-_ARUG2p2IY-Ktd8KDZQ_tV982oGz7MsFpiT2nx2CwpRPtWsFFY5XchJJGe5jrD6SEv-NHf4J1xdX7tgdQiImeGbcqyvRBpNr8XltbfsS-ido_W0GNiNsbMJOeB0XvBUGQSDsDCRSxOPztZHtCM5iGyK2jNsCXZKjQiw_8/http%3A%2F%2Fshapeblue.com%2Fcloudstack-infrastructure-support%2F> CloudStack Bootcamp Training Courses<http://secure-web.cisco.com/1qF9YOVMu2C4EKdpgRLLGDhijeJdMEqGFmtUFdiRVq40mbxoYdeFUqunCEBenuJCEowDhT8JfRJ90cG2Y3M4Nx_485mCuYCJn_yyMgq45-SGvosZ3IRQiSjQETjXaYxj4GR737c8onjv5-TnbWBtUk7_WHJXwu3Qj61lSmi0SQX-qpjZLtQWZvbvuXcO5OC7g/http%3A%2F%2Fshapeblue.com%2Fcloudstack-training%2F> This email and any attachments to it may be confidential and are intended solely for the use of the individual to whom it is addressed. Any views or opinions expressed are solely those of the author and do not necessarily represent those of Shape Blue Ltd or related companies. If you are not the intended recipient of this email, you must neither take any action based upon its contents, nor copy or show it to anyone. Please contact the sender if you believe you have received this email in error. Shape Blue Ltd is a company incorporated in England & Wales. ShapeBlue Services India LLP is a company incorporated in India and is operated under license from Shape Blue Ltd. Shape Blue Brasil Consultoria Ltda is a company incorporated in Brasil and is operated under license from Shape Blue Ltd. ShapeBlue SA Pty Ltd is a company registered by The Republic of South Africa and is traded under license from Shape Blue Ltd. ShapeBlue is a registered trademark.
