NetApp E-Series read and write errors on Delphix server after expanding a volume
Applies to
- NetApp E-Series
- ESXi 6.7.0
- DelphixOS release 5.11 version dlpx-5.3.6.0
Issue
- Disconnections on delphix host
ddcommand on delphix shows slow performance on disk expanded comparing with a good disk
Example:
Good disk:
dd if=/dev/rdsk/c4t1d0s0 of=/dev/null bs=1024k status=progress
4469030912 bytes (4.5 GB, 4.2 GiB) copied, 140007 s, 319MB/s
4337+0 records in
4336+0 records out
4546625536 bytes (4.5 GB, 4.2 GiB) copied, 1418888 s, 319MB/s
Expanded disk:
dd if=/dev/rdsk/c4t0d0s0 of=/dev/null bs=1024k status=progress
54+0 records in
53+0 records out
55574528 bytes (56MB GB, 53 MiB) copied, 26.39999 s, 2.1 MB/s
- Expansion job completed correctly on NetApp E-Series side
Example:
Volume initialized with zeros - Volume <xxx>
Increase volume capacity - Volume <xxx>
Controller return status/function call for requested operation - Shelf 99, Bay B
----> RPC function : 0x005f = startVolumeExpansion
----> Return code : 0x0001 = ok
Immediate availability initialization (IAF) started on volume - Volume <xxx>Immediate availability initialization (IAF) completed on volume - Volume <xxx>