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From Friðvin Logi Oddbjörnsson <frid...@greenqloud.com>
Subject Attaching more than 14 data volumes to an instance
Date Wed, 15 Feb 2017 10:54:32 GMT
CloudStack is currently limiting the number of data volumes, that can be
attached to an instance, to 14.
More specifically, this limitation relates to the device ids that
CloudStack considers valid for data volumes.
In method VolumeApiServiceImpl.getDeviceId(long, Long), only device ids 1,
2, and 4-15 are considered valid.
What I would like to know is: is there a reason for this limitation? (of
not going higher than device id 15)

Note that the current number of attached data volumes is already being
checked against the maximum number of data volumes per instance, as
specified by the relevant hypervisor’s capabilities.
E.g. if the relevant hypervisor’s capabilities specify that it only
supports 6 data volumes per instance, CloudStack rejects attaching a
seventh data volume.


Friðvin Logi Oddbjörnsson

Senior Developer

Tel: (+354) 415 0200 | fridvin@greenqloud.com <jaroslav@greenqloud.com>

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