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authorDan Williams <dan.j.williams@intel.com>2017-01-25 00:54:07 +0530
committerDan Williams <dan.j.williams@intel.com>2017-01-31 18:18:21 -0800
commit9d032f4201d39e5cf43a8709a047e481f5723fdc (patch)
tree05ce238b174f3fa8f56d0310a6b0a866c986d1b3 /net/atm/mpc.h
parent970d14e3989160ee9e97c7d75ecbc893fd29dab9 (diff)
libnvdimm, namespace: do not delete namespace-id 0
Given that the naming of pmem devices changes from the pmemX form to the pmemX.Y form when namespace id is greater than 0, arrange for namespaces with id-0 to be exempt from deletion. Otherwise a simple reconfiguration of an existing namespace to a new mode results in a name change of the resulting block device: # ndctl list --namespace=namespace1.0 { "dev":"namespace1.0", "mode":"raw", "size":2147483648, "uuid":"3dadf3dc-89b9-4b24-b20e-abc8a4707ce3", "blockdev":"pmem1" } # ndctl create-namespace --reconfig=namespace1.0 --mode=memory --force { "dev":"namespace1.1", "mode":"memory", "size":2111832064, "uuid":"7b4a6341-7318-4219-a02c-fb57c0bbf613", "blockdev":"pmem1.1" } This change does require tooling changes to explicitly look for namespaceX.0 if the seed has already advanced to another namespace. Cc: <stable@vger.kernel.org> Fixes: 98a29c39dc68 ("libnvdimm, namespace: allow creation of multiple pmem-namespaces per region") Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'net/atm/mpc.h')
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