[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH 2/2] block/export: Add vhost-user-blk resize support
From: |
Xie Yongji |
Subject: |
[PATCH 2/2] block/export: Add vhost-user-blk resize support |
Date: |
Fri, 21 Jan 2022 16:46:44 +0800 |
To support block resize, this updates the capacity field
in configuration space and use vu_notify_config_change()
to notify the vhost-user master on the block resize callback.
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
---
block/export/vhost-user-blk-server.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/block/export/vhost-user-blk-server.c
b/block/export/vhost-user-blk-server.c
index 1862563336..929a0bd007 100644
--- a/block/export/vhost-user-blk-server.c
+++ b/block/export/vhost-user-blk-server.c
@@ -435,6 +435,20 @@ static void blk_aio_detach(void *opaque)
vexp->export.ctx = NULL;
}
+static void vu_blk_resize(void *opaque)
+{
+ BlockExport *exp = opaque;
+ VuBlkExport *vexp = container_of(exp, VuBlkExport, export);
+
+ vexp->blkcfg.capacity =
+ cpu_to_le64(blk_getlength(exp->blk) >> VIRTIO_BLK_SECTOR_BITS);
+ vu_notify_config_change(&vexp->vu_server.vu_dev);
+}
+
+static const BlockDevOps vu_block_ops = {
+ .resize_cb = vu_blk_resize,
+};
+
static void
vu_blk_initialize_config(BlockDriverState *bs,
struct virtio_blk_config *config,
@@ -513,6 +527,8 @@ static int vu_blk_exp_create(BlockExport *exp,
BlockExportOptions *opts,
return -EADDRNOTAVAIL;
}
+ blk_set_dev_ops(exp->blk, &vu_block_ops, exp);
+
return 0;
}
--
2.20.1