OpenZFS 7614, 9064 - zfs device evacuation/removal

[mirror_zfs.git] / include / sys / zio.h

diff --git a/include/sys/zio.h b/include/sys/zio.h
index 1f9f48268463913595b3f88be205afa7e9b3a9f6..a275b16de9cc5d939ab41111f35146673bcc3497 100644 (file)
--- a/include/sys/zio.h
+++ b/include/sys/zio.h
@@ -167,6 +167,12 @@ enum zio_encrypt {
 #define        ZIO_FAILURE_MODE_CONTINUE       1
 #define        ZIO_FAILURE_MODE_PANIC          2
 
+typedef enum zio_suspend_reason {
+       ZIO_SUSPEND_NONE = 0,
+       ZIO_SUSPEND_IOERR,
+       ZIO_SUSPEND_MMP,
+} zio_suspend_reason_t;
+
 enum zio_flag {
        /*
         * Flags inherited by gang, ddt, and vdev children,
@@ -238,7 +244,10 @@ enum zio_flag {
 
 #define        ZIO_VDEV_CHILD_FLAGS(zio)                               \
        (((zio)->io_flags & ZIO_FLAG_VDEV_INHERIT) |            \
-       ZIO_FLAG_CANFAIL)
+       ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_CANFAIL)
+
+#define        ZIO_CHILD_BIT(x)                (1 << (x))
+#define        ZIO_CHILD_BIT_IS_SET(val, x)    ((val) & (1 << (x)))
 
 enum zio_child {
        ZIO_CHILD_VDEV = 0,
@@ -248,6 +257,14 @@ enum zio_child {
        ZIO_CHILD_TYPES
 };
 
+#define        ZIO_CHILD_VDEV_BIT              ZIO_CHILD_BIT(ZIO_CHILD_VDEV)
+#define        ZIO_CHILD_GANG_BIT              ZIO_CHILD_BIT(ZIO_CHILD_GANG)
+#define        ZIO_CHILD_DDT_BIT               ZIO_CHILD_BIT(ZIO_CHILD_DDT)
+#define        ZIO_CHILD_LOGICAL_BIT           ZIO_CHILD_BIT(ZIO_CHILD_LOGICAL)
+#define        ZIO_CHILD_ALL_BITS                                      \
+       (ZIO_CHILD_VDEV_BIT | ZIO_CHILD_GANG_BIT |              \
+       ZIO_CHILD_DDT_BIT | ZIO_CHILD_LOGICAL_BIT)
+
 enum zio_wait_type {
        ZIO_WAIT_READY = 0,
        ZIO_WAIT_DONE,
@@ -261,6 +278,9 @@ enum zio_wait_type {
 #define        ECKSUM  EBADE
 #define        EFRAGS  EBADR
 
+/* Similar for ENOACTIVE */
+#define        ENOTACTIVE      ENOANO
+
 typedef void zio_done_func_t(zio_t *zio);
 
 extern int zio_dva_throttle_enabled;
@@ -556,6 +576,7 @@ extern void zio_execute(zio_t *zio);
 extern void zio_interrupt(zio_t *zio);
 extern void zio_delay_init(zio_t *zio);
 extern void zio_delay_interrupt(zio_t *zio);
+extern void zio_deadman(zio_t *zio, char *tag);
 
 extern zio_t *zio_walk_parents(zio_t *cio, zio_link_t **);
 extern zio_t *zio_walk_children(zio_t *pio, zio_link_t **);
@@ -586,6 +607,8 @@ extern void zio_vdev_io_bypass(zio_t *zio);
 extern void zio_vdev_io_reissue(zio_t *zio);
 extern void zio_vdev_io_redone(zio_t *zio);
 
+extern void zio_change_priority(zio_t *pio, zio_priority_t priority);
+
 extern void zio_checksum_verified(zio_t *zio);
 extern int zio_worst_error(int e1, int e2);
 
@@ -596,8 +619,7 @@ extern enum zio_checksum zio_checksum_dedup_select(spa_t *spa,
 extern enum zio_compress zio_compress_select(spa_t *spa,
     enum zio_compress child, enum zio_compress parent);
 
-extern void zio_cancel(zio_t *zio);
-extern void zio_suspend(spa_t *spa, zio_t *zio);
+extern void zio_suspend(spa_t *spa, zio_t *zio, zio_suspend_reason_t);
 extern int zio_resume(spa_t *spa);
 extern void zio_resume_wait(spa_t *spa);
 
@@ -630,8 +652,8 @@ extern hrtime_t zio_handle_io_delay(zio_t *zio);
  * Checksum ereport functions
  */
 extern void zfs_ereport_start_checksum(spa_t *spa, vdev_t *vd,
-    zbookmark_phys_t *zb, struct zio *zio, uint64_t offset, uint64_t length,
-    void *arg, struct zio_bad_cksum *info);
+    const zbookmark_phys_t *zb, struct zio *zio, uint64_t offset,
+    uint64_t length, void *arg, struct zio_bad_cksum *info);
 extern void zfs_ereport_finish_checksum(zio_cksum_report_t *report,
     const abd_t *good_data, const abd_t *bad_data, boolean_t drop_if_identical);
 
@@ -639,8 +661,9 @@ extern void zfs_ereport_free_checksum(zio_cksum_report_t *report);
 
 /* If we have the good data in hand, this function can be used */
 extern void zfs_ereport_post_checksum(spa_t *spa, vdev_t *vd,
-    zbookmark_phys_t *zb, struct zio *zio, uint64_t offset, uint64_t length,
-    const abd_t *good_data, const abd_t *bad_data, struct zio_bad_cksum *info);
+    const zbookmark_phys_t *zb, struct zio *zio, uint64_t offset,
+    uint64_t length, const abd_t *good_data, const abd_t *bad_data,
+    struct zio_bad_cksum *info);
 
 /* Called from spa_sync(), but primarily an injection handler */
 extern void spa_handle_ignored_writes(spa_t *spa);