A small question about GearDB with zonefs.

[yigexintaibuhaoderen]

Hello, I encountered a small problem while reproducing GearDB with zonefs. I created zonefs on an Ubuntu 20.04 system with kernel version 5.15 and mounted it to the /mnt/zonefs directory, which contains 4 conventional zones (cnv) and 12 sequential zones (seq).
Before compiling GearDB, I set the following:

static const char smr_filename[]="/mnt/zonefs/seq"; 
*zonenum = 16;
*first_zonenum = 4;

After running ./out-static/db_bench, an error occurred:

ret=126976
write_size=8433664
error:126976 hm_write failed! table:5 write_size:8433664
error:no find file:5
Segmentation fault (core dumped)

After troubleshooting, I found the cause:

In ssize_t HMManager::hm_write, the return value of pwrite is inconsistent with write_size. According to my understanding, pwrite calls the POSIX interface and ultimately calls zonefs_file_dio_append in zonefs for the write operation. However, in this function, the value of size = bio->bi_iter.bi_size is not equal to write_size. I don't understand why this is the case.