Hi,
I'm trying to bring up a VPP setup with over 800 VLANs. When it's bring up
the TAP interfaces I get the following error:
Feb 10 10:32:51 vppdev-0cc47ac8fa74 vpp[11939]: tap282
Feb 10 10:32:51 vppdev-0cc47ac8fa74 vpp[11939]: tap283
Feb 10 10:32:51 vppdev-0cc47ac8fa74 vpp[11939]: tap284
Feb 10 10:32:53 vppdev-0cc47ac8fa74 vnet[11939]:
linux_epoll_file_update:120: epoll_ctl: Bad file descriptor (errno 9)
Feb 10 10:32:53 vppdev-0cc47ac8fa74 vnet[11939]: tap: tap679:
tap_create_if: open '/dev/net/tun': Too many open files
Feb 10 10:32:53 vppdev-0cc47ac8fa74 vnet[11939]: received signal SIGSEGV,
PC 0x7f5f6918de2b, faulting address 0x0
Feb 10 10:32:53 vppdev-0cc47ac8fa74 vnet[11939]: #0 0x00007f5f695aff84
0x7f5f695aff84
Feb 10 10:32:53 vppdev-0cc47ac8fa74 vnet[11939]: #1 0x00007f5f67d5a630
0x7f5f67d5a630
Feb 10 10:32:53 vppdev-0cc47ac8fa74 vpp[11939]: tapCouldn't create
/tmp/api_post_mortem.11939
Feb 10 10:32:53 vppdev-0cc47ac8fa74 vpp[11939]: 285
Feb 10 10:32:53 vppdev-0cc47ac8fa74 vpp[11939]: tap286
Feb 10 10:32:53 vppdev-0cc47ac8fa74 vpp[11939]: tap287
Feb 10 10:32:53 vppdev-0cc47ac8fa74 vpp[11939]: tap288
I bumped the filesystem max open file to 8000 and it's still the same.
Strangely it's always on tap285 which corresponds to VLAN 3273:
comment { Create loop284 -> VLAN 3273 : In Room Lan Vlan 3273 }
loopback create-interface
set int l2 bridge loop284 285 bvi
set int ip address loop284 172.31.34.1/27
set int state loop284 up
If I remove that VLAN entirely from the configuration the error moves to
tap288 which corresponds to VLAN 3277:
Feb 10 11:00:31 vppdev-0cc47ac8fa74 vpp[30583]: tap285
Feb 10 11:00:31 vppdev-0cc47ac8fa74 vpp[30583]: tap286
Feb 10 11:00:31 vppdev-0cc47ac8fa74 vpp[30583]: tap287
Feb 10 11:00:34 vppdev-0cc47ac8fa74 vnet[30583]:
linux_epoll_file_update:120: epoll_ctl: Bad file descriptor (errno 9)
Feb 10 11:00:34 vppdev-0cc47ac8fa74 vnet[30583]: tap: tap679:
tap_create_if: open '/dev/net/tun': Too many open files
Feb 10 11:00:34 vppdev-0cc47ac8fa74 vnet[30583]: received signal SIGSEGV,
PC 0x7fe76b685e2b, faulting address 0x0
Feb 10 11:00:34 vppdev-0cc47ac8fa74 vnet[30583]: #0 0x00007fe76baa7f84
0x7fe76baa7f84
Feb 10 11:00:34 vppdev-0cc47ac8fa74 vnet[30583]: #1 0x00007fe76a252630
0x7fe76a252630
Feb 10 11:00:34 vppdev-0cc47ac8fa74 vpp[30583]: tap28Couldn't create
/tmp/api_post_mortem.30583
Feb 10 11:00:34 vppdev-0cc47ac8fa74 vpp[30583]: 8
Feb 10 11:00:34 vppdev-0cc47ac8fa74 vpp[30583]: tap289
Feb 10 11:00:34 vppdev-0cc47ac8fa74 vpp[30583]: tap290
Feb 10 11:00:34 vppdev-0cc47ac8fa74 vpp[30583]: tap291
Feb 10 11:00:34 vppdev-0cc47ac8fa74 vpp[30583]: tap292
comment { Create loop287 -> VLAN 3277 : In Room Lan Vlan 3277 }
loopback create-interface
set int l2 bridge loop287 288 bvi
set int ip address loop287 172.31.34.129/27
set int state loop287 up
Interface that was loading properly before...
Any hints or clues ?
Andre
[image: Intello by TELUS Business] <http://intello.com/>
*André Courchesne*
R&D Team - Software Designer / Équipe R&D - Concepteur logiciel
andre.courche...@intello.com
1 888-404-6261 x329
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