[Bug 243225] "mpr0: Out of chain frames" boot hang after clang 9.0.1 import (probably timing, not compiler related)
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Date: Tue, 03 Jun 2025 07:39:52 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=243225
--- Comment #9 from Peter Eriksson <pen@lysator.liu.se> ---
Just for reference, I'm running FreeBSD 14.2 with "mpr" controllers on some
machines and things work mostly fine. I'm using the default hw.mpr.max_chains =
16384 on all machines.
Machine 1 - Dell PowerEdge R330 - 2 SATA SSDs
# mprutil show adapters
Device Name Chip Name Board Name Firmware
/dev/mpr0 LSISAS3008 Dell HBA330 Adp 10000b00
# mprutil show adapter
mpr0 Adapter:
Board Name: Dell HBA330 Adp
Board Assembly:
Chip Name: LSISAS3008
Chip Revision: ALL
BIOS Revision: 18.00.03.00
Firmware Revision: 16.00.11.00
Integrated RAID: no
SATA NCQ: ENABLED
PCIe Width/Speed: x4 (8.0 GB/sec)
IOC Speed: Full
Temperature: 47 C
PhyNum CtlrHandle DevHandle Disabled Speed Min Max Device
0 N 3.0 12 SAS Initiator
1 N 3.0 12 SAS Initiator
2 N 3.0 12 SAS Initiator
3 N 3.0 12 SAS Initiator
4 N 3.0 12 SAS Initiator
5 N 3.0 12 SAS Initiator
6 0001 000a N 6.0 3.0 12 SAS Initiator
7 0002 000b N 6.0 3.0 12 SAS Initiator
# sysctl dev.mpr |egrep chain
dev.mpr.0.chain_alloc_fail: 0
dev.mpr.0.max_chains: 16384
dev.mpr.0.chain_free_lowwater: 16352
dev.mpr.0.chain_free: 16384
Machine 2 - Dell PowerEdge R740xd - 20+48 drives
# mprutil show adapters
Device Name Chip Name Board Name Firmware
/dev/mpr0 LSISAS3008 Dell HBA330 Mini 10000b00
/dev/mpr1 SAS3816 HBA 9500-16e 1d000000
# mprutil -u0 show adapter
mpr0 Adapter:
Board Name: Dell HBA330 Mini
Board Assembly:
Chip Name: LSISAS3008
Chip Revision: ALL
BIOS Revision: 18.00.03.00
Firmware Revision: 16.00.11.00
Integrated RAID: no
SATA NCQ: ENABLED
PCIe Width/Speed: x8 (8.0 GB/sec)
IOC Speed: Full
Temperature: 39 C
PhyNum CtlrHandle DevHandle Disabled Speed Min Max Device
0 0001 0009 N 12 3.0 12 SAS Initiator
1 0001 0009 N 12 3.0 12 SAS Initiator
2 0001 0009 N 12 3.0 12 SAS Initiator
3 0001 0009 N 12 3.0 12 SAS Initiator
4 0001 0009 N 12 3.0 12 SAS Initiator
5 0001 0009 N 12 3.0 12 SAS Initiator
6 0001 0009 N 12 3.0 12 SAS Initiator
7 0001 0009 N 12 3.0 12 SAS Initiator
# mprutil -u1 show adapter
mpr1 Adapter:
Board Name: HBA 9500-16e
Board Assembly: 03-50075-00003
Chip Name: SAS3816
Chip Revision: ALL
BIOS Revision: 0.00.00.00
Firmware Revision: 29.00.00.00
Integrated RAID: no
SATA NCQ: ENABLED
PCIe Width/Speed: x8 (8.0 GB/sec)
IOC Speed: Full
Temperature: 46 C
PhyNum CtlrHandle DevHandle Disabled Speed Min Max Device
0 0001 002f N 12 3.0 12 SAS Initiator
1 0001 002f N 12 3.0 12 SAS Initiator
2 0001 002f N 12 3.0 12 SAS Initiator
3 0001 002f N 12 3.0 12 SAS Initiator
4 0001 002f N 12 3.0 12 SAS Initiator
5 0001 002f N 12 3.0 12 SAS Initiator
6 0001 002f N 12 3.0 12 SAS Initiator
7 0001 002f N 12 3.0 12 SAS Initiator
8 0009 0049 N 12 3.0 12 SAS Initiator
9 0009 0049 N 12 3.0 12 SAS Initiator
10 0009 0049 N 12 3.0 12 SAS Initiator
11 0009 0049 N 12 3.0 12 SAS Initiator
12 0009 0049 N 12 3.0 12 SAS Initiator
13 0009 0049 N 12 3.0 12 SAS Initiator
14 0009 0049 N 12 3.0 12 SAS Initiator
15 0009 0049 N 12 3.0 12 SAS Initiator
16 N ??? ??? No Device
17 N ??? ??? No Device
18 N ??? ??? No Device
19 N ??? ??? No Device
20 N ??? ??? No Device
# sysctl dev.mpr|egrep chain
dev.mpr.1.chain_alloc_fail: 0
dev.mpr.1.max_chains: 16384
dev.mpr.1.chain_free_lowwater: 10274
dev.mpr.1.chain_free: 16384
dev.mpr.0.chain_alloc_fail: 0
dev.mpr.0.max_chains: 16384
dev.mpr.0.chain_free_lowwater: 14383
dev.mpr.0.chain_free: 16384
Machine 3 - HP ProLiant DL380G9 - 121 drives
# mprutil show adapters
Device Name Chip Name Board Name Firmware
/dev/mpr0 SAS3816 HBA 9500-16e 20000000
# mprutil show adapter
mpr0 Adapter:
Board Name: HBA 9500-16e
Board Assembly: 03-50075-00003
Chip Name: SAS3816
Chip Revision: ALL
BIOS Revision: 0.00.00.00
Firmware Revision: 32.00.00.00
Integrated RAID: no
SATA NCQ: ENABLED
PCIe Width/Speed: x8 (8.0 GB/sec)
IOC Speed: Full
Temperature: 45 C
PhyNum CtlrHandle DevHandle Disabled Speed Min Max Device
0 0001 0017 N 12 3.0 12 SAS Initiator
1 0001 0017 N 12 3.0 12 SAS Initiator
2 0001 0017 N 12 3.0 12 SAS Initiator
3 0001 0017 N 12 3.0 12 SAS Initiator
4 N 3.0 12 SAS Initiator
5 N 3.0 12 SAS Initiator
6 N 3.0 12 SAS Initiator
7 N 3.0 12 SAS Initiator
8 0009 0018 N 12 3.0 12 SAS Initiator
9 0009 0018 N 12 3.0 12 SAS Initiator
10 0009 0018 N 12 3.0 12 SAS Initiator
11 0009 0018 N 12 3.0 12 SAS Initiator
12 N 3.0 12 SAS Initiator
13 N 3.0 12 SAS Initiator
14 N 3.0 12 SAS Initiator
15 N 3.0 12 SAS Initiator
16 N ??? ??? No Device
17 N ??? ??? No Device
18 N ??? ??? No Device
19 N ??? ??? No Device
20 N ??? ??? No Device
# sysctl dev.mpr|egrep chain
dev.mpr.0.chain_alloc_fail: 0
dev.mpr.0.max_chains: 16384
dev.mpr.0.chain_free_lowwater: 5839
dev.mpr.0.chain_free: 16384
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