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[Qemu-devel] [PATCH][v2] Merge NBD client/server int qemu-nbd

From: Laurent Vivier
Subject: [Qemu-devel] [PATCH][v2] Merge NBD client/server int qemu-nbd
Date: Thu, 19 Jun 2008 10:58:04 +0200


this patch allows to connect directly a disk image file to an NBD
device. It introduces the use of a unix socket (instead of inet).

- To connect a file to a device:

# qemu-nbd --connect=/dev/nbd0 my_disk.qcow2

Then you can see directly your disk (no need of nbd-client):

# fdisk -l /dev/nbd0

Disk /dev/nbd0: 4294 MB, 4294967296 bytes
255 heads, 63 sectors/track, 522 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

     Device Boot      Start         End      Blocks   Id  System
/dev/nbd0p1   *           1         492     3951958+  83  Linux
/dev/nbd0p2             493         522      240975    5  Extended
/dev/nbd0p5             493         522      240943+  82  Linux swap /

- To disconnect the file from the device:

# qemu-nbd --disconnect /dev/nbd0

- v2: call show_parts() from client and avoid the sleep(1). Thank you to
Avi and Anthony. Include my cleanup patch and comments from Carlo
Marcelo Arenas Belon.

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Attachment: qemu-nbd-local.patch
Description: Text Data

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