static void
expand (struct mempool *pool)
{
size_t size;
char *mem;
size = pool->chunk_size;
GET_MEMORY (mem, size);
if (!mem)
{
size = UNW_ALIGN(pool->obj_size, pg_size);
GET_MEMORY (mem, size);
if (!mem)
{
/* last chance: try to allocate one object from the SOS memory */
size = pool->obj_size;
mem = sos_alloc (size);
}
}
add_memory (pool, mem, size, pool->obj_size);
}
BS_IO_RETURN_t
simpleOSD_lun_open(char *path, /*IN*/
int oflag, /*IN*/
uint64_t *size, /*OUT*/
uint32_t *blksize, /*OUT*/
int *lun_index){ /*OUT*/
BS_IO_RETURN_t ret = BS_IO_SUCCESS;
int next_free_lun=0;
int is_free=FALSE;
for(next_free_lun=0;next_free_lun<NB_MAX_LUN &&
(p_simpleOSD_lun_list[next_free_lun]);next_free_lun++){
if((IS_FREE(p_simpleOSD_lun_list[next_free_lun])))
break;
}
if(next_free_lun>=NB_MAX_LUN){
ret=BS_IO_ERROR;
BLOCKFRONT_LOG(LOG_CRITICAL,"\n Reached max LUN limit:%d",NB_MAX_LUN);
goto end;
}
if(!(p_simpleOSD_lun_list[next_free_lun]))
p_simpleOSD_lun_list[next_free_lun]=GET_MEMORY(sizeof(osd_lun_t));
USE_LUN(p_simpleOSD_lun_list[next_free_lun]);
osd_lun_t *p_curr_lun=(osd_lun_t*)VAL_POINTER(p_simpleOSD_lun_list[next_free_lun]);
/*Need to modify path name as <dc_path>/dev_blockdev_name and separate
block_dev_name from absolute path*/
strncpy(p_curr_lun->lun_vol,path,MAXNAMESIZE);
p_curr_lun->lun_index=next_free_lun;
p_curr_lun->io_flag=oflag;
snprintf(p_curr_lun->datacache_info.lun_dc_path,MAXPATHSIZE,"/%s/%s/",
global_blk_frontend_parameters.dc_path,p_curr_lun->lun_vol);
/*Update Lun from MDS or conf file based on device name */
if(ret=simpleOSD_get_lun_info(p_curr_lun)){
ret=BS_IO_ERROR;
goto end;
}
*size=p_curr_lun->lun_capacity;
*blksize=p_curr_lun->block_size;
*lun_index=next_free_lun;
end:
return ret;
}
