| PMEMBLK_SET_ZERO(3) | PMDK Programmer's Manual | PMEMBLK_SET_ZERO(3) |
pmemblk_set_zero(), pmemblk_set_error() - block management functions
#include <libpmemblk.h>
int pmemblk_set_zero(PMEMblkpool *pbp, long long blockno);
int pmemblk_set_error(PMEMblkpool *pbp, long long blockno);
The pmemblk_set_zero() function writes zeros to block number blockno in persistent memory resident array of blocks pbp. Using this function is faster than actually writing a block of zeros since libpmemblk(7) uses metadata to indicate the block should read back as zero.
The pmemblk_set_error() function sets the error state for block number blockno in persistent memory resident array of blocks pbp. A block in the error state returns errno EIO when read. Writing the block clears the error state and returns the block to normal use.
On success, pmemblk_set_zero() and pmemblk_set_error() return 0. On error, they return -1 and set errno appropriately.
libpmemblk(7) and <https://pmem.io>
| 2020-10-28 | PMDK - pmemblk API version 1.1 |