// errInconsistentDisk - inconsistent disk found.
var errInconsistentDisk = StorageErr("inconsistent drive found")

// errUnsupporteDisk - when disk does not support O_DIRECT flag.
var errUnsupportedDisk = StorageErr("drive does not support O_DIRECT")

// errDiskFull - cannot create volume or files when disk is full.
var errDiskFull = StorageErr("drive path full")

// errDiskNotDir - cannot use storage disk if its not a directory

	"errors"
	"os"
	"runtime"
	"syscall"
)

// No space left on device error
func isSysErrNoSpace(err error) bool {
	return errors.Is(err, syscall.ENOSPC)
}

// Invalid argument, unsupported flags such as O_DIRECT
func isSysErrInvalidArg(err error) bool {
	return errors.Is(err, syscall.EINVAL)
}

// Input/output error
func isSysErrIO(err error) bool {
	return errors.Is(err, syscall.EIO)
}

**In our tests we also found ext4 does not honor POSIX O_DIRECT/Fdatasync semantics, ext4 trades performance for consistency guarantees. Please avoid ext4 in your setup.**