ioctl_xfs_fscounts(2) — Linux manual page


IOCTL-XFS-FSCOUNTS(2)      System Calls Manual     IOCTL-XFS-FSCOUNTS(2)

NAME         top

       ioctl_xfs_fscounts - query XFS summary counter information

SYNOPSIS         top

       #include <xfs/xfs_fs.h>

       int ioctl(int fd, XFS_IOC_FSCOUNTS, struct xfs_fsop_counts *arg);

DESCRIPTION         top

       Query the raw filesystem summary counters.  Unlike statvfs(3),
       the values returned here are the raw values, which do not reflect
       any alterations or limits set by project quotas.  The counter
       information is conveyed in a structure of the following form:

           struct xfs_fsop_counts {
                __u64   freedata;
                __u64   freertx;
                __u64   freeino;
                __u64   allocino;

       The fields of this structure are as follows:

       freedata is the number of free filesystem blocks on the data

       freertx is the number of free extents on the realtime device.

       freeino is the number of inode records that are not in use within
       the space that has been allocated for them.

       allocino is the number of inode records for which space has been

RETURN VALUE         top

       On error, -1 is returned, and errno is set to indicate the error.

ERRORS         top

       Error codes can be one of, but are not limited to, the following:

              Metadata checksum validation failed while performing the

              Metadata corruption was encountered while performing the

       EINVAL The specified allocation group number is not valid for
              this filesystem.

       EIO    An I/O error was encountered while performing the query.

CONFORMING TO         top

       This API is specific to XFS filesystem on the Linux kernel.

SEE ALSO         top


COLOPHON         top

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XFS                            2019-06-17          IOCTL-XFS-FSCOUNTS(2)

Pages that refer to this page: xfsctl(3)