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Add a note about GID and RDMA device auto-selection

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Vitaliy Filippov
2024-11-21 23:54:05 +03:00
parent 1f6a061283
commit ad3b6b7267
3 changed files with 16 additions and 6 deletions
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docs/config/network.en.md
+4 -1
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@@ -71,7 +71,9 @@ RDMA device name to use for Vitastor OSD communications (for example,
"rocep5s0f0"). If not specified, Vitastor will try to find an RoCE
device matching [osd_network](osd.en.md#osd_network), preferring RoCEv2,
or choose the first available RDMA device if no RoCE devices are
found or if `osd_network` is not specified.
found or if `osd_network` is not specified. Auto-selection is also
unsupported with old libibverbs < v32, like in Debian 10 Buster or
CentOS 7.
Vitastor supports all adapters, even ones without ODP support, like
Mellanox ConnectX-3 and non-Mellanox cards. Versions up to Vitastor
@@ -107,6 +109,7 @@ you need.
If not specified, Vitastor will try to auto-select a RoCEv2 IPv4 GID, then
RoCEv2 IPv6 GID, then RoCEv1 IPv4 GID, then RoCEv1 IPv6 GID, then IB GID.
GID auto-selection is unsupported with libibverbs < v32.
A correct rdma_gid_index for RoCEv2 is usually 1 (IPv6) or 3 (IPv4).