* CDDL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012 by Delphix. All rights reserved.
*/
#include <sys/zfs_context.h>
* Virtual device vector for files.
*/
+static void
+vdev_file_hold(vdev_t *vd)
+{
+ ASSERT(vd->vdev_path != NULL);
+}
+
+static void
+vdev_file_rele(vdev_t *vd)
+{
+ ASSERT(vd->vdev_path != NULL);
+}
+
static int
-vdev_file_open(vdev_t *vd, uint64_t *psize, uint64_t *ashift)
+vdev_file_open(vdev_t *vd, uint64_t *psize, uint64_t *max_psize,
+ uint64_t *ashift)
{
vdev_file_t *vf;
vnode_t *vp;
return (EINVAL);
}
- vf = vd->vdev_tsd = kmem_zalloc(sizeof (vdev_file_t), KM_SLEEP);
+ /*
+ * Reopen the device if it's not currently open. Otherwise,
+ * just update the physical size of the device.
+ */
+ if (vd->vdev_tsd != NULL) {
+ ASSERT(vd->vdev_reopening);
+ vf = vd->vdev_tsd;
+ goto skip_open;
+ }
+
+ vf = vd->vdev_tsd = kmem_zalloc(sizeof (vdev_file_t), KM_PUSHPAGE);
/*
* We always open the files from the root of the global zone, even if
return (ENODEV);
}
#endif
+
+skip_open:
/*
* Determine the physical size of the file.
*/
return (error);
}
- *psize = vattr.va_size;
+ *max_psize = *psize = vattr.va_size;
*ashift = SPA_MINBLOCKSHIFT;
return (0);
{
vdev_file_t *vf = vd->vdev_tsd;
- if (vf == NULL)
+ if (vd->vdev_reopening || vf == NULL)
return;
if (vf->vf_vnode != NULL) {
(void) VOP_PUTPAGE(vf->vf_vnode, 0, 0, B_INVAL, kcred, NULL);
(void) VOP_CLOSE(vf->vf_vnode, spa_mode(vd->vdev_spa), 1, 0,
kcred, NULL);
- VN_RELE(vf->vf_vnode);
}
+ vd->vdev_delayed_close = B_FALSE;
kmem_free(vf, sizeof (vdev_file_t));
vd->vdev_tsd = NULL;
}
vdev_file_io_start(zio_t *zio)
{
vdev_t *vd = zio->io_vd;
- vdev_file_t *vf = vd->vdev_tsd;
- ssize_t resid;
+ vdev_file_t *vf;
+ ssize_t resid = 0;
- if (zio->io_type == ZIO_TYPE_IOCTL) {
- /* XXPOLICY */
- if (!vdev_readable(vd)) {
- zio->io_error = ENXIO;
- return (ZIO_PIPELINE_CONTINUE);
- }
+ if (!vdev_readable(vd)) {
+ zio->io_error = ENXIO;
+ return (ZIO_PIPELINE_CONTINUE);
+ }
+ vf = vd->vdev_tsd;
+
+ if (zio->io_type == ZIO_TYPE_IOCTL) {
switch (zio->io_cmd) {
case DKIOCFLUSHWRITECACHE:
zio->io_error = VOP_FSYNC(vf->vf_vnode, FSYNC | FDSYNC,
vdev_file_io_start,
vdev_file_io_done,
NULL,
+ vdev_file_hold,
+ vdev_file_rele,
VDEV_TYPE_FILE, /* name of this vdev type */
B_TRUE /* leaf vdev */
};
vdev_file_io_start,
vdev_file_io_done,
NULL,
+ vdev_file_hold,
+ vdev_file_rele,
VDEV_TYPE_DISK, /* name of this vdev type */
B_TRUE /* leaf vdev */
};