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ajkr/gist:053b51bb97d5a8957136b2a8cf885c71

Created May 7, 2019 23:20
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gistfile1.txt
$ echo "x ==> y" | ./ldb write_extern_sst --db=./tmp ./tmp.sst
external SST file written to ./tmp.sst
$ strace -ye openat,fsync ./ldb ingest_extern_sst --create_if_missing --db=./tmp ./tmp.sst |& grep -E 'fsync|O_CREAT.*sst'
fsync(4</home/andrew/rocksdb/tmp>) = 0
fsync(16</home/andrew/rocksdb/tmp/OPTIONS-000122.dbtmp>) = 0
openat(AT_FDCWD, "./tmp/000124.sst", O_WRONLY|O_CREAT|O_TRUNC|O_CLOEXEC, 0644) = 17</home/andrew/rocksdb/tmp/000124.sst>
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