PSTAT Interfaces

6. Appendix

pst_crashdev

This structure describes a crash dump device. It is only available as 64-bit data. Header file:

int64_t psc_idx; /* Index of this device. */

struct __psdev psc_device; /* Device number of physical device */

int64_t psc_offset; /* Offset (kB) of area on physical device */

int64_t psc_size; /* Size (kB) of dump area */

struct psdev psc_lv; /* Logical volume dev number, if any */

int64_t psc_source; /* How'd this device get configured? */

The psc_idx member+1 is used as offset for further pstat_getcrashdev() calls. Flag values

for psc_source are:

PS_BOOTTIME à Device configured at boot.

PS_RUNTIME à Device configured by crashconf(2).

pst_crashinfo

This structure describes the system crash dump configuration. It is only available as 64-bit data.

It contains the following members. Header file: <sys/pstat/crash_pstat_body.h>

int64_t psc_flags; /* Dump configuration flags */

struct __psdev psc_headerdev; /* Device containing dump header */

int64_t psc_headeroffset; /* Byte Offset of dump header on device */

int64_t psc_ncrashdevs; /* Number of dump devices */

int64_t psc_totalsize; /* Total amount of dump space (kB) */

int64_t psc_included; /* Page classes to be included */

int64_t psc_excluded; /* Page classes to be excluded */

int64_t psc_default; /* Defaults for unspecified classes */

int64_t psc_nclasses; /* Number of classes */

int64_t psc_pgcount[PST_MAXCLASSES];

/* Number of pages in each class */

The psc_flags member can take the following values:

PS_EARLY_DUMP à An early dump was taken

PS_CONF_CHANGED à Configuration changed since boot

PS_HEADER_VALID à headerdev and headeroffset are valid

pst_diskinfo

Header file: <sys/pstat/disk_pstat_body.h>

_T_LONG_T psd_idx; /* Index for further pstat() requests */

struct __psdev psd_dev; /* Device specification for the disk. Describes

* the block dev. Refer pstat_body.h header. */

_T_LONG_T psd_dktime; /* cumulative ticks on the disk */

_T_LONG_T psd_dkseek; /* cumulative number of seeks done */

_T_LONG_T psd_dkxfer; /* cumulative number of transfers; includes

* requests with high (read/write) and low

* (ioctl) priorities */

_T_LONG_T psd_dkwds; /* cumulative number of 64-byte transfers */

float psd_dkmspw; /* OBSOLETE: do not use */

struct __psdev psd_cdev; /* device specification for the raw disk */