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[Qemu-block] [PATCH v4 03/27] blockdev: Add and parse "lock-image" optio
From: |
Fam Zheng |
Subject: |
[Qemu-block] [PATCH v4 03/27] blockdev: Add and parse "lock-image" option for block devices |
Date: |
Tue, 10 May 2016 10:50:35 +0800 |
Honor the locking switch specified in CLI or QMP, and set the open flags for
the image accordingly.
Signed-off-by: Fam Zheng <address@hidden>
---
blockdev.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/blockdev.c b/blockdev.c
index f1f520a..200fa56 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -382,6 +382,10 @@ static void extract_common_blockdev_options(QemuOpts
*opts, int *bdrv_flags,
return;
}
}
+
+ if (!qemu_opt_get_bool(opts, "lock-image", false)) {
+ *bdrv_flags |= BDRV_O_NO_LOCK;
+ }
}
/* disk I/O throttling */
@@ -4249,6 +4253,10 @@ QemuOptsList qemu_common_drive_opts = {
.type = QEMU_OPT_BOOL,
.help = "whether to account for failed I/O operations "
"in the statistics",
+ },{
+ .name = "lock-image",
+ .type = QEMU_OPT_BOOL,
+ .help = "whether to lock the image (default: on)",
},
{ /* end of list */ }
},
@@ -4278,6 +4286,10 @@ static QemuOptsList qemu_root_bds_opts = {
.name = "detect-zeroes",
.type = QEMU_OPT_STRING,
.help = "try to optimize zero writes (off, on, unmap)",
+ },{
+ .name = "lock-image",
+ .type = QEMU_OPT_BOOL,
+ .help = "whether to lock the image (default: on)",
},
{ /* end of list */ }
},
--
2.8.2
- [Qemu-block] [PATCH v4 00/27] block: Lock images when opening, Fam Zheng, 2016/05/09
- [Qemu-block] [PATCH v4 01/27] block: Add BDRV_O_NO_LOCK, Fam Zheng, 2016/05/09
- [Qemu-block] [PATCH v4 02/27] qapi: Add lock-image in blockdev-add options, Fam Zheng, 2016/05/09
- [Qemu-block] [PATCH v4 03/27] blockdev: Add and parse "lock-image" option for block devices,
Fam Zheng <=
- [Qemu-block] [PATCH v4 04/27] block: Introduce image file locking, Fam Zheng, 2016/05/09
- [Qemu-block] [PATCH v4 05/27] block: Add bdrv_image_locked, Fam Zheng, 2016/05/09
- [Qemu-block] [PATCH v4 06/27] block: Make bdrv_reopen_{commit, abort} private functions, Fam Zheng, 2016/05/09
- [Qemu-block] [PATCH v4 07/27] block: Handle image locking during reopen, Fam Zheng, 2016/05/09
- [Qemu-block] [PATCH v4 08/27] osdep: Add qemu_lock_fd and qemu_unlock_fd, Fam Zheng, 2016/05/09