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.