s390

s390 — plugin for operations with s390

Functions

gboolean bd_s390_check_deps ()
gboolean bd_s390_init ()
void bd_s390_close ()
GQuark bd_s390_error_quark ()
gboolean bd_s390_dasd_format ()
gboolean bd_s390_dasd_needs_format ()
gchar * bd_s390_sanitize_dev_input ()
gboolean bd_s390_dasd_online ()
gboolean bd_s390_dasd_is_ldl ()
gboolean bd_s390_dasd_is_fba ()
gchar * bd_s390_zfcp_sanitize_wwpn_input ()
gchar * bd_s390_zfcp_sanitize_lun_input ()
gboolean bd_s390_zfcp_online ()
gboolean bd_s390_zfcp_scsi_offline ()
gboolean bd_s390_zfcp_offline ()
gboolean bd_s390_is_tech_avail ()

Types and Values

enum BDS390Error
#define BD_S390_ERROR
enum BDS390Tech
enum BDS390TechMode

Includes

#include <s390.h>

Description

A plugin for operations with s390 devices.

Functions

bd_s390_check_deps ()

gboolean
bd_s390_check_deps (void);

Returns

whether the plugin's runtime dependencies are satisfied or not

Function checking plugin's runtime dependencies.

bd_s390_init ()

gboolean
bd_s390_init (void);

Initializes the plugin. **This function is called automatically by the library's initialization functions.**

bd_s390_close ()

void
bd_s390_close (void);

Cleans up after the plugin. **This function is called automatically by the library's functions that unload it.**

bd_s390_error_quark ()

GQuark
bd_s390_error_quark (void);

[skip]

bd_s390_dasd_format ()

gboolean
bd_s390_dasd_format (const gchar *dasd,
                     const BDExtraArg **extra,
                     GError **error);

Parameters

dasd

dasd to format

  

extra

extra options for the formatting (right now passed to the 'dasdfmt' utility).

[nullable][array zero-terminated=1]

error

place to store error (if any).

[out][optional]

Returns

whether dasdfmt was successful or not

Tech category: BD_S390_TECH_DASD-BD_S390_TECH_MODE_MODIFY

bd_s390_dasd_needs_format ()

gboolean
bd_s390_dasd_needs_format (const gchar *dasd,
                           GError **error);

Parameters

dasd

dasd to check, whether it needs dasdfmt run on it

  

error

place to store error (if any).

[out][optional]

Returns

whether a dasd needs dasdfmt run against it

Tech category: BD_S390_TECH_DASD-BD_S390_TECH_MODE_QUERY

bd_s390_sanitize_dev_input ()

gchar *
bd_s390_sanitize_dev_input (const gchar *dev,
                            GError **error);

Parameters

dev

a DASD or zFCP device number

  

error

place to store error (if any).

[out][optional]

Returns

a synthesized dasd or zfcp device number

Tech category: always available.

[transfer full]

bd_s390_dasd_online ()

gboolean
bd_s390_dasd_online (const gchar *dasd,
                     GError **error);

Parameters

dasd

dasd to switch online

  

error

place to store error (if any).

[out][optional]

Returns

whether a dasd was successfully switched online

Tech category: BD_S390_TECH_DASD-BD_S390_TECH_MODE_MODIFY

bd_s390_dasd_is_ldl ()

gboolean
bd_s390_dasd_is_ldl (const gchar *dasd,
                     GError **error);

Parameters

dasd

dasd to check, whether it is LDL formatted

  

error

place to store error (if any).

[out][optional]

Returns

whether a dasd is LDL formatted

Tech category: BD_S390_TECH_DASD-BD_S390_TECH_MODE_QUERY

bd_s390_dasd_is_fba ()

gboolean
bd_s390_dasd_is_fba (const gchar *dasd,
                     GError **error);

Parameters

dasd

dasd to check, whether it is FBA

  

error

place to store error (if any).

[out][optional]

Returns

whether a dasd is FBA

Tech category: BD_S390_TECH_DASD-BD_S390_TECH_MODE_QUERY

bd_s390_zfcp_sanitize_wwpn_input ()

gchar *
bd_s390_zfcp_sanitize_wwpn_input (const gchar *wwpn,
                                  GError **error);

Parameters

wwpn

a zFCP WWPN identifier

  

error

place to store error (if any).

[out][optional]

Returns

a synthesized zFCP WWPN

Tech category: always available.

[transfer full]

bd_s390_zfcp_sanitize_lun_input ()

gchar *
bd_s390_zfcp_sanitize_lun_input (const gchar *lun,
                                 GError **error);

Parameters

lun

a zFCP LUN identifier

  

error

place to store error (if any).

[out][optional]

Returns

a synthesized zFCP LUN

Tech category: always available.

[transfer full]

bd_s390_zfcp_online ()

gboolean
bd_s390_zfcp_online (const gchar *devno,
                     const gchar *wwpn,
                     const gchar *lun,
                     GError **error);

Parameters

devno

a zFCP device number

  

wwpn

a zFCP WWPN identifier

  

lun

a zFCP LUN identifier

  

error

place to store error (if any).

[out][optional]

Returns

whether a zFCP device was successfully switched online

Tech category: BD_S390_TECH_ZFCP-BD_S390_TECH_MODE_MODIFY

bd_s390_zfcp_scsi_offline ()

gboolean
bd_s390_zfcp_scsi_offline (const gchar *devno,
                           const gchar *wwpn,
                           const gchar *lun,
                           GError **error);

Parameters

devno

a zFCP device number

  

wwpn

a zFCP WWPN identifier

  

lun

a zFCP LUN identifier

  

error

place to store error (if any).

[out][optional]

Returns

whether a LUN was successfully removed from associated WWPN

This function looks through /proc/scsi/scsi and manually removes LUNs from associated WWPNs. zFCP devices are SCSI devices accessible over FCP protocol. In z/OS the IODF (I/O definition file) contains basic information about the I/O config, but WWPN and LUN configuration is done at the OS level, hence this function becomes necessary when switching the device offline. This particular sequence of actions is for some reason unnecessary when switching the device online. Chalk it up to s390x being s390x.

Tech category: BD_S390_TECH_ZFCP-BD_S390_TECH_MODE_MODIFY

bd_s390_zfcp_offline ()

gboolean
bd_s390_zfcp_offline (const gchar *devno,
                      const gchar *wwpn,
                      const gchar *lun,
                      GError **error);

Parameters

devno

zfcp device number

  

wwpn

zfcp WWPN (World Wide Port Number)

  

lun

zfcp LUN (Logical Unit Number)

  

error

place to store error (if any).

[out][optional]

Returns

whether a zfcp device was successfully switched offline

Tech category: BD_S390_TECH_ZFCP-BD_S390_TECH_MODE_MODIFY

bd_s390_is_tech_avail ()

gboolean
bd_s390_is_tech_avail (BDS390Tech tech,
                       guint64 mode,
                       GError **error);

Parameters

tech

the queried tech

  

mode

a bit mask of queried modes of operation (BDS390TechMode) for tech

 

error

place to store error (details about why the tech -mode combination is not available).

[out][optional]

Returns

whether the tech -mode combination is available -- supported by the plugin implementation and having all the runtime dependencies available

Types and Values

enum BDS390Error

Members

BD_S390_ERROR_DEVICE

    

BD_S390_ERROR_FORMAT_FAILED

    

BD_S390_ERROR_DASDFMT

    

BD_S390_ERROR_IO

    

BD_S390_ERROR_TECH_UNAVAIL

    

BD_S390_ERROR

#define             BD_S390_ERROR

enum BDS390Tech

Members

BD_S390_TECH_DASD

    

BD_S390_TECH_ZFCP

    

enum BDS390TechMode

Members

BD_S390_TECH_MODE_MODIFY

    

BD_S390_TECH_MODE_QUERY

    
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