pmem2_source_device_usc - Man Page

returns the unsafe shutdown counter value of a device

Synopsis

#include <libpmem2.h>

struct pmem2_source;
int pmem2_source_device_usc(const struct pmem2_source *source, uint64_t *usc);

Description

The pmem2_source_device_usc() function retrieves the sum of the unsafe shutdown count(USC) values of all hardware devices backing the data source and stores it in *usc.

Please refer to libpmem2_unsafe_shutdown(7) for detailed description on how to properly consume this information.

Return Value

The pmem2_source_device_usc() function returns 0 on success. If the function fails, the *usc variable content is left unmodified and a negative error code is returned.

Errors

The pmem2_source_device_usc() can fail with the following errors:

See Also

fstat(2), errno(3), malloc(3), libpmem2_unsafe_shutdown(7), and <https://pmem.io>

Referenced By

libpmem2(7), libpmem2_unsafe_shutdown(7).

2024-01-25 PMDK - PMDK Programmer's Manual