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[Qemu-devel] [PATCH 2/3] block: tell drivers about an image resize
From: |
Christoph Hellwig |
Subject: |
[Qemu-devel] [PATCH 2/3] block: tell drivers about an image resize |
Date: |
Fri, 14 Jan 2011 17:21:04 +0100 |
User-agent: |
Mutt/1.3.28i |
Add a new size_changed flag in the BlockDriverState and call the
change_cb callback to notify drivers about a size change.
Signed-off-by: Christoph Hellwig <address@hidden>
Index: qemu/block.c
===================================================================
--- qemu.orig/block.c 2011-01-14 17:05:49.527003363 +0100
+++ qemu/block.c 2011-01-14 17:07:23.206255143 +0100
@@ -1135,6 +1135,10 @@ int bdrv_truncate(BlockDriverState *bs,
ret = drv->bdrv_truncate(bs, offset);
if (ret == 0) {
ret = refresh_total_sectors(bs, offset >> BDRV_SECTOR_BITS);
+ if (bs->change_cb) {
+ bs->size_changed = 1;
+ bs->change_cb(bs->change_opaque);
+ }
}
return ret;
}
Index: qemu/block_int.h
===================================================================
--- qemu.orig/block_int.h 2011-01-14 17:05:49.537004411 +0100
+++ qemu/block_int.h 2011-01-14 17:06:02.539004271 +0100
@@ -167,6 +167,7 @@ struct BlockDriverState {
char backing_format[16]; /* if non-zero and backing_file exists */
int is_temporary;
int media_changed;
+ int size_changed;
BlockDriverState *backing_hd;
BlockDriverState *file;
- [Qemu-devel] [PATCH 1/3] block: add resize monitor command, (continued)
- [Qemu-devel] [PATCH 1/3] block: add resize monitor command, Christoph Hellwig, 2011/01/14
- Re: [Qemu-devel] [PATCH 1/3] block: add resize monitor command, Stefan Hajnoczi, 2011/01/17
- Re: [Qemu-devel] [PATCH 1/3] block: add resize monitor command, Kevin Wolf, 2011/01/17
- Re: [Qemu-devel] [PATCH 1/3] block: add resize monitor command, Christoph Hellwig, 2011/01/18
- Re: [Qemu-devel] [PATCH 1/3] block: add resize monitor command, Christoph Hellwig, 2011/01/19
- Re: [Qemu-devel] [PATCH 1/3] block: add resize monitor command, Kevin Wolf, 2011/01/19
- Re: [Qemu-devel] [PATCH 1/3] block: add resize monitor command, Christoph Hellwig, 2011/01/19
- Re: [Qemu-devel] [PATCH 1/3] block: add resize monitor command, Kevin Wolf, 2011/01/19
- Re: [Qemu-devel] [PATCH 1/3] block: add resize monitor command, Christoph Hellwig, 2011/01/19
[Qemu-devel] [PATCH 2/3] block: tell drivers about an image resize,
Christoph Hellwig <=
[Qemu-devel] [PATCH 3/3] virtio-blk: tell the guest about size changes, Christoph Hellwig, 2011/01/14
Re: [Qemu-devel] [PATCH 0/3] allow online resizing of block devices, Luiz Capitulino, 2011/01/18