dpm_reservespace(3) [debian man page]

DPM_RESERVESPACE(3)					       DPM Library Functions					       DPM_RESERVESPACE(3)

NAME

       dpm_reservespace - reserve space

SYNOPSIS

       #include <sys/types.h>
       #include "dpm_api.h"

       int  dpm_reservespace  (const  char  s_type,  const  char  *u_token,  const char ret_policy, const char ac_latency, u_signed64 req_t_space,
       u_signed64 req_g_space,	time_t	req_lifetime,  int  nbgids,  gid_t  *req_gids,	const  char  *poolname,  char  *actual_s_type,	u_signed64
       *actual_t_space, u_signed64 *actual_g_space, time_t *actual_lifetime, char *s_token)

DESCRIPTION

       dpm_reservespace reserves space.

       The input arguments are:

       s_type specifies the type of space requested. It can be V (for Volatile), D (for Durable), P (for Permanent) or - (for any).

       u_token
	      specifies the user provided description associated with the request.  This argument may be NULL.

       ret_policy
	      specifies the retention policy requested. It can be R (for REPLICA), O (for OUTPUT) or C (for CUSTODIAL).

       ac_latency
	      specifies the access latency requested. It can be O (for ONLINE) or N (for NEARLINE).

       req_t_space
	      Total space requested in bytes.

       req_g_space
	      Guaranteed space requested in bytes.

       req_lifetime
	      specifies the requested space lifetime (in seconds) relative to the current time.

       nbgids is the size of the array of group ids req_gids.

       req_gids
	      when  zero, the space is reserved for the user if the requester has a proxy without VOMS extension or for the group if the requester
	      has a proxy with VOMS extension.	If not zero, the space is reserved for this set of group ids.  If the caller does  not	belong	to
	      the group, it must have ADMIN privileges.

       poolname
	      If not NULL, reserves the space in that disk pool.

       The output arguments are:

       actual_s_type
	      Type of reserved space.

       actual_t_space
	      Total space reserved in bytes (best effort).

       actual_g_space
	      Guaranteed space reserved in bytes.

       actual_lifetime
	      Lifetime of the reserved space (in seconds) relative to the current time.

       s_token
	      Address of a buffer to receive the system allocated token.

RETURN VALUE

       This routine returns 0 if the operation was successful or -1 if the operation failed. In the latter case, serrno is set appropriately.

ERRORS

       EACCES	    The caller does not belong to the group identified by req_gid and does not have ADMIN privileges.

       EFAULT	    nbgids is greater than 0 and req_gids is a NULL pointer.

       EINVAL	    The  space type is invalid or the length of the user space token description is greater than 255, the space requested is not a
		    positive value, the pool name is longer than CA_MAXPOOLNAMELEN or unknown or the number of gids is too big.

       SENOSHOST    Host unknown.

       SEINTERNAL   Database error.

       SECOMERR     Communication error.

LCG
								      $Date$						       DPM_RESERVESPACE(3)

DPM_ADDPOOL(3)						       DPM Library Functions						    DPM_ADDPOOL(3)

NAME

       dpm_addpool - define a new disk pool

SYNOPSIS

       #include <sys/types.h>
       #include "dpm_api.h"

       int dpm_addpool (struct dpm_pool *dpm_pool)

DESCRIPTION

       dpm_addpool defines a new disk pool.

       dpm_pool
	      contains the pool definition.

       struct dpm_pool {
	    char      poolname[CA_MAXPOOLNAMELEN+1];
	    u_signed64	   defsize;
	    int       gc_start_thresh;
	    int       gc_stop_thresh;
	    int       def_lifetime;
	    int       defpintime;
	    int       max_lifetime;
	    int       maxpintime;
	    char      fss_policy[CA_MAXPOLICYLEN+1];
	    char      gc_policy[CA_MAXPOLICYLEN+1];
	    char      mig_policy[CA_MAXPOLICYLEN+1];
	    char      rs_policy[CA_MAXPOLICYLEN+1];
	    int       nbgids;
	    gid_t	   *gids;
	    char      ret_policy;
	    char      s_type;
	    u_signed64	   capacity;
	    u_signed64	   free;
	    int       nbelem;
       };

       poolname
	      specifies the disk pool name.

       defsize
	      specifies the default amount of space reserved for a file (in bytes).

       gc_start_thresh
	      specifies  the  minimum  free  space  in	the pool.  If the percentage of free space goes below this value, the garbage collector is
	      started. Default is 0.

       gc_stop_thresh
	      specifies the percentage of free space in the pool above which the garbage collector is stopped. Default is 0.

       def_lifetime
	      specifies the default time a space or volatile file is kept in the system (in seconds).

       defpintime
	      specifies the default time a file is kept on a given disk (in seconds).

       max_lifetime
	      specifies the maximum time a space or volatile file is kept in the system (in seconds).

       maxpintime
	      specifies the maximum time a file is kept on a given disk (in seconds).

       nbgids is the size of the array of group ids gids.

       gids   The disk pool is restricted to this set of gids unless the group gid is zero.

       ret_policy
	      specifies the retention policy supported by the disk pool. It can be R (for Replica), O (for Output) or C (for Custodial).

       s_type indicates the type of space supported in the disk pool. It can be V (for Volatile), D (for Durable), P  (for  Permanent)	or  -  (to
	      accept any type).

       This function requires ADMIN privilege.

RETURN VALUE

       This routine returns 0 if the operation was successful or -1 if the operation failed. In the latter case, serrno is set appropriately.

ERRORS

       EACCES	    The caller does not have ADMIN privilege.

       EFAULT	    dpm_pool is a NULL pointer.

       EEXIST	    This pool exists already.

       ENOMEM	    Memory could not be allocated for storing the pool definition.

       EINVAL	    The length of poolname exceeds CA_MAXPOOLNAMELEN or the number of gids is too big.

       SENOSHOST    Host unknown.

       SEINTERNAL   Database error.

       SECOMERR     Communication error.

LCG
					       $Date: 2011-05-23 14:22:57 +0200 (Mon, 23 May 2011) $				    DPM_ADDPOOL(3)