DPM_MODIFYFS(3) DPM Library Functions DPM_MODIFYFS(3)NAME
dpm_modifyfs - modify the parameters of a disk pool filesystem
SYNOPSIS
#include <sys/types.h>
#include "dpm_api.h"
int dpm_modifyfs (char *server, char *fs, int status, int weight)
DESCRIPTION
dpm_modifyfs modifies the parameters of a disk pool filesystem.
server specifies the host name of the disk server where this filesystem is mounted.
fs specifies the mount point of the dedicated filesystem.
status Initial status of this filesystem. It can be set to 0 or FS_DISABLED or FS_RDONLY. (-1 will tell the server to not change the cur-
rent value).
weight specifies the weight of the filesystem. This is used during the filesystem selection. The value must be positive (-1 will tell the
server to not change the current value). It is recommended to use a value lower than 10.
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 Filesystem does not exist.
EACCES The caller does not have ADMIN privilege.
EFAULT server or fs is a NULL pointer.
EINVAL The length of server exceeds CA_MAXHOSTNAMELEN or the length of fs exceeds 79.
SENOSHOST Host unknown.
SEINTERNAL Database error.
SECOMERR Communication error.
LCG $Date$ DPM_MODIFYFS(3)
Check Out this Related Man Page
LFC_LISTREPLICAX(3) LFC Library Functions LFC_LISTREPLICAX(3)NAME
lfc_listreplicax - list replica entries for a given pool/server/filesystem
SYNOPSIS
#include <sys/types.h>
#include "lfc_api.h"
struct lfc_filereplica *lfc_listreplicax (const char *poolname, const char *server, const char *fs, int flags, lfc_list *listp)
DESCRIPTION
lfc_listreplicax lists replica entries for a given pool/server/filesystem. This routine returns a pointer to a structure containing the
current replica entry.
struct lfc_filereplica {
u_signed64 fileid;
u_signed64 nbaccesses;
time_t atime; /* last access to replica */
time_t ptime; /* replica pin time */
char status;
char f_type; /* 'V' for Volatile, 'P' for Permanent */
char poolname[CA_MAXPOOLNAMELEN+1];
char host[CA_MAXHOSTNAMELEN+1];
char fs[80];
char sfn[CA_MAXSFNLEN+1];
};
poolname
specifies the disk pool (only meaningful for the DPM).
server specifies the Storage Element or disk server hostname.
fs specifies the file system (only meaningful for the DPM).
flags may be one of the following constant:
CNS_LIST_BEGIN
the first call must have this flag set to allocate buffers and initialize pointers.
CNS_LIST_CONTINUE
all the following calls must have this flag set.
CNS_LIST_END
final call to terminate the list and free resources.
RETURN VALUE
This routine returns a pointer to a structure containing the current replica entry if the operation was successful or NULL if all entries
have been returned or if the operation failed. In the latter case, serrno is set appropriately.
EXAMPLES
A C program listing the files residing on a given server could look like:
int flags;
lfc_list list;
struct lfc_filereplica *lp;
flags = CNS_LIST_BEGIN;
while ((lp = lfc_listreplicax (NULL, server, NULL, flags, &list))) {
flags = CNS_LIST_CONTINUE;
/* process the entry */
.....
}
(void) lfc_listreplicax (NULL, server, NULL, CNS_LIST_END, &list);
ERRORS
ENOMEM Memory could not be allocated for the output buffer.
EFAULT poolname, server and fs are NULL pointers or listp is a NULL pointer.
EINVAL The length of poolname exceeds CA_MAXPOOLNAMELEN or the length of server exceeds CA_MAXHOSTNAMELEN or the length of fs exceeds
79.
SENOSHOST Host unknown.
SENOSSERV Service unknown.
SECOMERR Communication error.
ENSNACT Name server is not running or is being shutdown.
SEE ALSO Castor_limits(4), lfc_addreplica(3)LFC $Date: 2005/07/21 08:31:48 $ LFC_LISTREPLICAX(3)