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authorMax Reitz <mreitz@redhat.com>2015-10-26 21:39:10 +0100
committerKevin Wolf <kwolf@redhat.com>2015-11-11 16:22:47 +0100
commit2814f67271bce537f29c6a7832f89fd4f1cdaa1a (patch)
treed94904f6f9dbe9f8a4a3f6941cb076977f6b35ab /blockdev.c
parentabaaf59d245b6984644497b6745f88912c715c39 (diff)
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blockdev: Add blockdev-remove-medium
Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'blockdev.c')
-rw-r--r--blockdev.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/blockdev.c b/blockdev.c
index cb8a2f0..25635e3 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -2147,6 +2147,57 @@ void qmp_blockdev_close_tray(const char *device, Error **errp)
blk_dev_change_media_cb(blk, true);
}
+void qmp_blockdev_remove_medium(const char *device, Error **errp)
+{
+ BlockBackend *blk;
+ BlockDriverState *bs;
+ AioContext *aio_context;
+ bool has_device;
+
+ blk = blk_by_name(device);
+ if (!blk) {
+ error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+ "Device '%s' not found", device);
+ return;
+ }
+
+ /* For BBs without a device, we can exchange the BDS tree at will */
+ has_device = blk_get_attached_dev(blk);
+
+ if (has_device && !blk_dev_has_removable_media(blk)) {
+ error_setg(errp, "Device '%s' is not removable", device);
+ return;
+ }
+
+ if (has_device && !blk_dev_is_tray_open(blk)) {
+ error_setg(errp, "Tray of device '%s' is not open", device);
+ return;
+ }
+
+ bs = blk_bs(blk);
+ if (!bs) {
+ return;
+ }
+
+ aio_context = bdrv_get_aio_context(bs);
+ aio_context_acquire(aio_context);
+
+ if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_EJECT, errp)) {
+ goto out;
+ }
+
+ /* This follows the convention established by bdrv_make_anon() */
+ if (bs->device_list.tqe_prev) {
+ QTAILQ_REMOVE(&bdrv_states, bs, device_list);
+ bs->device_list.tqe_prev = NULL;
+ }
+
+ blk_remove_bs(blk);
+
+out:
+ aio_context_release(aio_context);
+}
+
/* throttling disk I/O limits */
void qmp_block_set_io_throttle(const char *device, int64_t bps, int64_t bps_rd,
int64_t bps_wr,