DPM_GETPOOLS(3) DPM Library Functions DPM_GETPOOLS(3)NAME
dpm_getpools - get list of pools
SYNOPSIS
#include <sys/types.h>
#include "dpm_api.h"
int dpm_getpools (int *nbpools, struct dpm_pool **dpm_pools)
DESCRIPTION
dpm_getpools gets list of pools.
The output arguments are:
nbpools
will be set to the number of replies in the array of pools.
dpm_pools
will be set to the address of an array of dpm_pool structures allocated by the API. The client application is responsible for free-
ing the array when not needed anymore. This is also necessary for the gids entry of each dpm_pool.
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; /* restrict the pool to given group(s) */
char ret_policy; /* retention policy: 'R', 'O' or 'C' */
char s_type; /* space type: 'V', 'D' or 'P' */
u_signed64 capacity;
u_signed64 free;
struct dpm_fs *elemp;
int nbelem;
int next_elem; /* next pool element to be used */
};
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
EFAULT nbpools or dpm_pools is a NULL pointer.
ENOMEM Memory could not be allocated for storing the reply.
SENOSHOST Host unknown.
SECOMERR Communication error.
LCG $Date: 2007/04/30 06:39:28 $ DPM_GETPOOLS(3)
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DPM_MODIFYPOOL(3) DPM Library Functions DPM_MODIFYPOOL(3)NAME
dpm_modifypool - modify a disk pool definition
SYNOPSIS
#include <sys/types.h>
#include "dpm_api.h"
int dpm_modifypool (struct dpm_pool *dpm_pool)
DESCRIPTION
dpm_modifypool modifies a disk pool definition.
dpm_pool
contains the new 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). If set to -1, the current value is unchanged.
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. If set to -1, the current value is unchanged.
gc_stop_thresh
specifies the percentage of free space in the pool above which the garbage collector is stopped. If set to -1, the current value is
unchanged.
def_lifetime
specifies the default time a space or volatile file is kept in the system (in seconds). If set to -1, the current value is
unchanged.
defpintime
specifies the default time a file is kept on a given disk (in seconds). If set to -1, the current value is unchanged.
max_lifetime
specifies the maximum time a space or volatile file is kept in the system (in seconds). If set to -1, the current value is
unchanged.
maxpintime
specifies the maximum time a file is kept on a given disk (in seconds). If set to -1, the current value is unchanged.
nbgids is the size of the array of group ids gids. If set to -1, the current set is unchanged.
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). If set
to 0, the current value is unchanged.
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). If set to 0, the current value is unchanged.
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
ENOENT This pool does not exist.
EACCES The caller does not have ADMIN privilege.
EFAULT dpm_pool is a NULL pointer.
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_MODIFYPOOL(3)