vxfs_ap_query_ckpt - return information about allocation policies assigned to a Storage Checkpoint

cc -I /opt/VRTS/include -L /opt/VRTS/lib

-l vxfsutil -ldl

#include <sys/types.h>

#include <vxfsutil.h>

int vxfs_ap_query_ckpt(int fd, char *ckptname, char *datapol, char *metapol);

AVAILABILITY

VRTSvxfs

The vxfs_ap_query_ckpt() function retrieves information about the Storage Checkpoint allocation policies assigned to the given Storage Checkpoint. The datapol and metapol arguments must point to buffers of (FSAP_NAMESZ + 1) bytes, which are filled in with the name of the policy (if any) and NULL-terminated. If no policy is assigned, the string "NONE" is returned. datapol is the name of the data policy that can be created with fsapadm(1M) or through the vxfs_ap_define() API. metapol is the name of the metadata policy that can be created with fsapadm(1M) or through the vxfs_ap_define() API. The file descriptor fd specifies a file within the Storage Checkpoint.

To use this function, specify -l vxfsutil while linking.

This function is supported only on Version 6 and later disk layouts. This API supports file system versions 6.0 and above.

vxfs_ap_query_ckpt() returns zero on success, non-zero on failure.

EAGAIN	The file system is not currently frozen.
EFAULT	One or more of the specified pointer arguments points to an illegal address.
EFBIG	An was made to reserve space larger than the maximum file size for this process.
EINVAL	The command or argument is invalid.
EIO	An I/O error occurred during the operation.
ENOENT	One or more of the named policies does not exist.
ENOSYS	There is no license installed to allow this operation.
ENOTSUP	This operation is not supported by the disk layout version of the specified file system. Use vxupgrade(1m) to enable this operation.
ENXIO	There is no such device or address.
EPERM	The effective user ID of the calling process does not have appropriate privileges to perform this operation.

To query a Storage Checkpoint for its assigned policies:

# vxfs_ap_query_ckpt(fd, checkpoint_name data_policy, meta_policy);

vxfs_ap_assign_ckpt(3), vxfs_ap_assign_file(3), vxfs_ap_assign_fs(3), vxfs_ap_define(3), vxfs_ap_define2(3), vxfs_ap_remove(3), vxfs_ap_enforce_ckpt(3), vxfs_ap_enforce_file(3), vxfs_ap_enforce_file2(3), vxfs_ap_enumerate(3), vxfs_ap_query(3), vxfs_ap_query2(3), vxfs_ap_query_file(3), vxfs_ap_query_fs(3), vxfs_vol_add(3), vxfs_vol_deencapsulate(3), vxfs_vol_encapsulate(3), vxfs_vol_enumerate(3), vxfs_vol_remove(3), vxfs_vol_resize(3), vxfs_vol_stat(3)