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Re: [Qemu-devel] [PATCH v5 05/11] blockdev: use bdrv_getlength() in qmp_
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [PATCH v5 05/11] blockdev: use bdrv_getlength() in qmp_drive_mirror() |
Date: |
Thu, 30 May 2013 15:24:34 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130514 Thunderbird/17.0.6 |
Il 30/05/2013 14:34, Stefan Hajnoczi ha scritto:
> Use bdrv_getlength() for its byte units and error return instead of
> bdrv_get_geometry().
>
> Reported-by: Kevin Wolf <address@hidden>
> Signed-off-by: Stefan Hajnoczi <address@hidden>
> ---
> blockdev.c | 10 +++++++---
> 1 file changed, 7 insertions(+), 3 deletions(-)
>
> diff --git a/blockdev.c b/blockdev.c
> index 01db519..73b175b 100644
> --- a/blockdev.c
> +++ b/blockdev.c
> @@ -1364,7 +1364,7 @@ void qmp_drive_mirror(const char *device, const char
> *target,
> BlockDriver *drv = NULL;
> Error *local_err = NULL;
> int flags;
> - uint64_t size;
> + int64_t size;
> int ret;
>
> if (!has_speed) {
> @@ -1428,8 +1428,12 @@ void qmp_drive_mirror(const char *device, const char
> *target,
> sync = MIRROR_SYNC_MODE_FULL;
> }
>
> - bdrv_get_geometry(bs, &size);
> - size *= 512;
> + size = bdrv_getlength(bs);
> + if (size < 0) {
> + error_setg_errno(errp, -size, "bdrv_getlength failed");
> + return;
> + }
> +
> if (sync == MIRROR_SYNC_MODE_FULL && mode != NEW_IMAGE_MODE_EXISTING) {
> /* create new image w/o backing file */
> assert(format && drv);
>
Thanks!
Paolo
- [Qemu-devel] [PATCH v5 00/11] block: drive-backup live backup command, Stefan Hajnoczi, 2013/05/30
- [Qemu-devel] [PATCH v5 08/11] blockdev: allow BdrvActionOps->commit() to be NULL, Stefan Hajnoczi, 2013/05/30
- [Qemu-devel] [PATCH v5 09/11] blockdev: add DriveBackup transaction, Stefan Hajnoczi, 2013/05/30
- [Qemu-devel] [PATCH v5 10/11] blockdev: add Abort transaction, Stefan Hajnoczi, 2013/05/30
- [Qemu-devel] [PATCH v5 04/11] blockdev: drop redundant proto_drv check, Stefan Hajnoczi, 2013/05/30
- [Qemu-devel] [PATCH v5 07/11] blockdev: rename BlkTransactionStates to singular, Stefan Hajnoczi, 2013/05/30
- [Qemu-devel] [PATCH v5 05/11] blockdev: use bdrv_getlength() in qmp_drive_mirror(), Stefan Hajnoczi, 2013/05/30
- Re: [Qemu-devel] [PATCH v5 05/11] blockdev: use bdrv_getlength() in qmp_drive_mirror(),
Paolo Bonzini <=
- [Qemu-devel] [PATCH v5 02/11] block: add bdrv_add_before_write_notifier(), Stefan Hajnoczi, 2013/05/30
- [Qemu-devel] [PATCH v5 11/11] qemu-iotests: add 055 drive-backup test case, Stefan Hajnoczi, 2013/05/30
- [Qemu-devel] [PATCH v5 01/11] notify: add NotiferWithReturn so notifier list can abort, Stefan Hajnoczi, 2013/05/30
- [Qemu-devel] [PATCH v5 06/11] block: add drive-backup QMP command, Stefan Hajnoczi, 2013/05/30
- [Qemu-devel] [PATCH v5 03/11] block: add basic backup support to block driver, Stefan Hajnoczi, 2013/05/30