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lib/reduce: add debug helper function

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Prints key info about a volume and its PMEM. As the metadata is
mapped, there's no real reason to dump all this to a file, it
can be accessed via gdb using the addresses printed out.

Signed-off-by: paul luse <paul.e.luse@intel.com>
Change-Id: I2c7b8c32b6142ba0fded623a660b4d7d0c5b19bc
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/458117
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
This commit is contained in:
paul luse 2019-06-14 12:53:19 -04:00 committed by Darek Stojaczyk
parent cda27398e5
commit d571336b4b
2 changed files with 44 additions and 0 deletions
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9
include/spdk/reduce.h
View File

@ -239,4 +239,13 @@ void spdk_reduce_vol_writev(struct spdk_reduce_vol *vol,
* \return params structure for the compressed volume. * \return params structure for the compressed volume.
*/ */
const struct spdk_reduce_vol_params *spdk_reduce_vol_get_params(struct spdk_reduce_vol *vol); const struct spdk_reduce_vol_params *spdk_reduce_vol_get_params(struct spdk_reduce_vol *vol);
/**
* Dump out key information for a libreduce compressed volume and its PMEM.
*
* This function will print key information for a given volume its PMEM.
*
* \param vol Previously loaded or initialized compressed volume.
*/
void spdk_reduce_vol_print_info(struct spdk_reduce_vol *vol);
#endif /* SPDK_REDUCE_H_ */ #endif /* SPDK_REDUCE_H_ */

35
lib/reduce/reduce.c
View File

@ -1395,4 +1395,39 @@ spdk_reduce_vol_get_params(struct spdk_reduce_vol *vol)
return &vol->params; return &vol->params;
} }
void spdk_reduce_vol_print_info(struct spdk_reduce_vol *vol)
{
uint64_t logical_map_size, num_chunks, ttl_chunk_sz;
uint32_t struct_size;
uint64_t chunk_map_size;
SPDK_NOTICELOG("vol info:\n");
SPDK_NOTICELOG("\tvol->params.backing_io_unit_size = 0x%x\n", vol->params.backing_io_unit_size);
SPDK_NOTICELOG("\tvol->params.logical_block_size = 0x%x\n", vol->params.logical_block_size);
SPDK_NOTICELOG("\tvol->params.chunk_size = 0x%x\n", vol->params.chunk_size);
SPDK_NOTICELOG("\tvol->params.vol_size = 0x%" PRIx64 "\n", vol->params.vol_size);
num_chunks = _get_total_chunks(vol->params.vol_size, vol->params.chunk_size);
SPDK_NOTICELOG("\ttotal chunks (including extra) = 0x%" PRIx64 "\n", num_chunks);
SPDK_NOTICELOG("\ttotal chunks (excluding extra) = 0x%" PRIx64 "\n",
vol->params.vol_size / vol->params.chunk_size);
ttl_chunk_sz = _get_pm_total_chunks_size(vol->params.vol_size, vol->params.chunk_size,
vol->params.backing_io_unit_size);
SPDK_NOTICELOG("\ttotal_chunks_size = 0x%" PRIx64 "\n", ttl_chunk_sz);
struct_size = _reduce_vol_get_chunk_struct_size(vol);
SPDK_NOTICELOG("\tchunk_struct_size = 0x%x\n", struct_size);
SPDK_NOTICELOG("pmem info:\n");
SPDK_NOTICELOG("\tvol->pm_file.size = 0x%" PRIx64 "\n", vol->pm_file.size);
SPDK_NOTICELOG("\tvol->pm_file.pm_buf = %p\n", (void *)vol->pm_file.pm_buf);
SPDK_NOTICELOG("\tvol->pm_super = %p\n", (void *)vol->pm_super);
SPDK_NOTICELOG("\tvol->pm_logical_map = %p\n", (void *)vol->pm_logical_map);
logical_map_size = _get_pm_logical_map_size(vol->params.vol_size,
vol->params.chunk_size);
SPDK_NOTICELOG("\tlogical_map_size = 0x%" PRIx64 "\n", logical_map_size);
SPDK_NOTICELOG("\tvol->pm_chunk_maps = %p\n", (void *)vol->pm_chunk_maps);
chunk_map_size = _get_pm_total_chunks_size(vol->params.vol_size, vol->params.chunk_size,
vol->params.backing_io_unit_size);
SPDK_NOTICELOG("\tchunk_map_size = 0x%" PRIx64 "\n", chunk_map_size);
}
SPDK_LOG_REGISTER_COMPONENT("reduce", SPDK_LOG_REDUCE) SPDK_LOG_REGISTER_COMPONENT("reduce", SPDK_LOG_REDUCE)