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[Xen-changelog] [xen-unstable] tools/hotplug/Linux: allow hardlinked files for block device images



# HG changeset patch
# User Olaf Hering <olaf@xxxxxxxxx>
# Date 1295287552 0
# Node ID 02c0af2bf280e37c891e1ac9c5b6baa5799527cb
# Parent  654563af359ff8287419ee4f5248f236565542d1
tools/hotplug/Linux: allow hardlinked files for block device images

tools/hotplug/Linux/block change for this losetup -a output:
(inode 12 is listed twice due to hardlinks)

/dev/loop0: [0809]:139267 (/abuild/vdisk-sles11_2-disk0)
/dev/loop1: [0809]:139266 (/abuild/vdisk-sles11_1-disk1)
/dev/loop3: [0809]:139267 (/abuild/vdisk-sles11_2-disk0)
/dev/loop5: [0809]:139273 (/abuild/vdisk-sles11_5-disk1)
/dev/loop8: [0809]:12 (/abuild/bootiso-xenpaging-sles11_5.iso)
/dev/loop10: [0809]:12 (/abuild/bootiso-xenpaging-sles11_4.iso)
/dev/loop11: [0809]:139271 (/abuild/vdisk-sles11_4-disk0)

Without this change, $dev would contain /dev/loop8\n/dev/loop10
Applies to 4.0 and 4.1

Signed-off-by: Olaf Hering <olaf@xxxxxxxxx>
Acked-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
---
 tools/hotplug/Linux/block |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff -r 654563af359f -r 02c0af2bf280 tools/hotplug/Linux/block
--- a/tools/hotplug/Linux/block Mon Jan 17 17:55:12 2011 +0000
+++ b/tools/hotplug/Linux/block Mon Jan 17 18:05:52 2011 +0000
@@ -279,8 +279,8 @@ mount it read-write in a guest domain."
             fatal "Unable to lookup $file: dev: $dev inode: $inode"
           fi
 
-          shared_list=$(losetup -a | grep ' \[0*'${dev}'\]:'${inode} |
-                cut -d : -f 1)
+          shared_list=$(losetup -a |
+                sed -n -e 
"s@^\([^:]\+\)\(:[[:blank:]]\[${dev}\]:${inode}[[:blank:]](${file})\)@\1@p" )
           for dev in "$shared_list"
           do
             if [ -n "$dev" ]

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