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author | Dan Williams <dan.j.williams@intel.com> | 2017-01-25 00:54:07 +0530 |
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committer | Dan Williams <dan.j.williams@intel.com> | 2017-01-31 18:18:21 -0800 |
commit | 9d032f4201d39e5cf43a8709a047e481f5723fdc (patch) | |
tree | 05ce238b174f3fa8f56d0310a6b0a866c986d1b3 /drivers/acpi | |
parent | 970d14e3989160ee9e97c7d75ecbc893fd29dab9 (diff) | |
download | linux-9d032f4201d39e5cf43a8709a047e481f5723fdc.tar.bz2 |
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 'drivers/acpi')
0 files changed, 0 insertions, 0 deletions