Issue when using only PMEMs

[adam-abed-abud]

Hi!

I'm trying to use only the PMEMs but when I change the configuration file (redis.conf) to "only-pmem" at line 1788 I get the following error. Have you encountered this issue before?

I built the project on a centos 8 machine using the memkind allocator.

Thanks
Adam

=== REDIS BUG REPORT START: Cut & paste starting from here ===
191495:M 16 Jul 2020 11:38:21.300 # Redis 5.9.102 crashed by signal: 11
191495:M 16 Jul 2020 11:38:21.300 # Crashed running the instruction at: 0x7ff622b8cb1d
191495:M 16 Jul 2020 11:38:21.300 # Accessing address: (nil)
191495:M 16 Jul 2020 11:38:21.300 # Failed assertion: (:0)

------ STACK TRACE ------
EIP:
/lib64/libc.so.6(vsnprintf+0x7d)[0x7ff622b8cb1d]

Backtrace:
./redis-server 127.0.0.1:6379(logStackTrace+0x2e)[0x46e93e]
./redis-server 127.0.0.1:6379(sigsegvHandler+0x96)[0x46efb6]
/lib64/libpthread.so.0(+0x12dd0)[0x7ff622ee7dd0]
/lib64/libc.so.6(vsnprintf+0x7d)[0x7ff622b8cb1d]
/lib64/libc.so.6(__snprintf+0x93)[0x7ff622b6c2e3]
./redis-server 127.0.0.1:6379(redisAsciiArt+0xc9)[0x431ac9]
./redis-server 127.0.0.1:6379(main+0x3c6)[0x4254f6]
/lib64/libc.so.6(__libc_start_main+0xf3)[0x7ff622b366a3]
./redis-server 127.0.0.1:6379(_start+0x2e)[0x42583e]

------ INFO OUTPUT ------
Segmentation fault (core dumped)

[michalbiesek]

Hi,

Could you share your NUMA configuration - an output from command numactl --hardware? Do you have configured PMEM NUMA node correctly? See https://pmem.io/2020/01/20/memkind-dax-kmem.html for details.
Do you have installed memkind which supports automatic detection of PMEM NUMA node? Before building and installing libmemkind from sources, please ensure that you have libdaxctl-devel (v66 or later) installed on your machine.

You could quickly test Redis you build to ensure your machine is configured correctly with:

• make MALLOC=memkind CFLAGS=-DREDIS_TEST
• ./redis-server test pmem

Best Regards Michal

[adam-abed-abud]

Hi Michal,

Indeed by configuring the PMEM NUMA node, it worked fine!

Thanks a lot.

Cheers,
Adam