NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | CONFORMING TO | SEE ALSO | COLOPHON

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 device.

       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
       allocated.

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:

       EFSBADCRC
              Metadata checksum validation failed while performing the
              query.

       EFSCORRUPTED
              Metadata corruption was encountered while performing the
              query.

       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

       ioctl(2)

COLOPHON         top

       This page is part of the xfsprogs (utilities for XFS filesystems)
       project.  Information about the project can be found at 
       ⟨http://xfs.org/⟩.  If you have a bug report for this manual page,
       send it to linux-xfs@vger.kernel.org.  This page was obtained from
       the project's upstream Git repository
       ⟨https://git.kernel.org/pub/scm/fs/xfs/xfsprogs-dev.git⟩ on
       2019-09-26.  (At that time, the date of the most recent commit that
       was found in the repository was 2019-08-21.)  If you discover any
       rendering problems in this HTML version of the page, or you believe
       there is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to
       man-pages@man7.org

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

Pages that refer to this page: xfsctl(3)