Allow user to select log destination

[metaspace]

Currently logs are stored in /tmp with a predefined name. We should allow users to select the log destination at mount time.

Maybe also allow syslog destination?

[kekeMemory]

Thanks for your help.
I am sorry,I run ROCKSDB_PLUGINS=zenfs make -j48 db_bench dbg~~
I did not get log file with "Info(logger_, "New Zoned Block Device: %s", filename_.c_str());" info logs in /tmp.

[metaspace]

I think that is the way to go. Maybe you need to make clean first. Are you building for rocksdb or terarkdb?

[kekeMemory]

I think that is the way to go. Maybe you need to make clean first. Are you building for rocksdb or terarkdb?

I built the rocksdb.

[metaspace]

I just tested myself and I do see the log files appear in tmp. But rocksdb is a little difficult to build in debug mode. Here is what I did (checked out rocksdb in /home/aeh/rocksdb):

make ROCKSDB_PLUGINS=zenfs -j$(nproc) db_bench gen-pc DEBUG_LEVEL=2
mv librocksdb_debug.a librocksdb.a
cd plugin/zenfs/util
PKG_CONFIG_PATH=/home/aeh/tmp/rocksdb make EXTRA_CXXFLAGS="-I/home/aeh/src -I/home/aeh/src/rocksdb/include -L/home/aeh/src/rocksdb"
./zenfs mkfs --zbd nvme2n2 --aux_path=/home/aeh/tmp/rocks-aux --force
cd ../tests
FS_PARAMS=--fs-uri=zenfs://dev:nvme2n2 ./run.sh my-test smoke

And now I have a logfile:

ls /tmp/zenfs_nvme*
/tmp/zenfs_nvme2n2_2022-11-02_10:44:53.log

[kekeMemory]

@metaspace Hi, excuse me, still the log info issue.
I thought I did not get write log files like your file:

"zenfs_nvme*_year-month-day_time.log"

I can get this kind of log file:

I did :

./zenfs mkfs --zbd nvme* --aux_path=/home/tmp/rocks-aux --force
And I now have this two logfile:
$ ls /tmp/rocks-aux/rocksdbtest/dbbench
LOCK LOG  

I checked the LOG Info, but is not the same with zenfs_nvme*_year-month-day_time.loginfo,so how can I solve?

[kekeMemory]

I am sorry to bother you, since I really did not find the name like:
zenfs_nvme*_year-month-day_time.log

I have used the latest rocksdb and zenfs, and zenfs is embedded in /home/rocksdb/plugin/zenfs/
I wanna to see the file from the code /home/rocksdb/plugin/zenfs/fs/zbd_zenfs.cc:
Info(logger_, "New Zoned Block Device: %s", zbd_be_>GetFilename().c_str());

When I did db_bench test in /home/rocksdb, i have move the compiled zenfs util to the same path //home/rocksdb
I can only get the this two logfile:

$ ls /tmp/rocks-aux/rocksdbtest/dbbench
LOCK LOG 

So i do not know where to find？
@yhr @metaspace @royguo

[aravind-wdc]

@kekeMemory when formatting the zenfs filesystem, did you use the "--enable-gc=true" option ?

[kekeMemory]

@kekeMemory when formatting the zenfs filesystem, did you use the "--enable-gc=true" option ?

Yes, I have set --enable-gc

[aravind-wdc]

Did you run a smoke test or a dbbench workload and then check ?

[kekeMemory]

Yes, I used a dbbench workload Aravind ***@***.***> 于2022年12月2日周五 12:37写道：

…

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