[Bug 1469143] Re: kpartx -d fails with image paths longer than 63 characters
I have sent the patch to the mailing list, no comments yet though. https://www.redhat.com/archives/dm-devel/2015-July/msg00037.html -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to multipath-tools in Ubuntu. https://bugs.launchpad.net/bugs/1469143 Title: kpartx -d fails with image paths longer than 63 characters To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/multipath-tools/+bug/1469143/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1469143] Re: kpartx -d fails with image paths longer than 63 characters
In addition to not handling long paths, kpartx also fails to handle relative paths correctly. Here's an example: for d in 1 2 do mkdir $d ( cd $d dd if=/dev/zero of=disk.img seek=8k count=1 2 /dev/null (echo n;echo;echo;echo;echo;echo w) | fdisk disk.img /dev/null kpartx -av disk.img ) done Expected result: add map loop1p1 (254:0): 0 6145 linear /dev/loop0 2048 add map loop2p1 (254:1): 0 6145 linear /dev/loop1 2048 Actual result: add map loop1p1 (254:0): 0 6145 linear /dev/loop0 2048 add map loop1p1 (254:0): 0 6145 linear /dev/loop0 2048 Currently kpartx end up modifying the existing binding instead of creating a new one. Both the long path problem and the relative path problem are caused by kpartx trying to use the binding name to store the image file path and assuming that the name would uniquely identify a binding. The correct way is to use the device and inode numbers of the image files to identify which loop mount is attached to which image file. I have attached a patch which does exactly this. ** Patch added: Use inode to match loopback mount to backing file https://bugs.launchpad.net/ubuntu/+source/multipath-tools/+bug/1469143/+attachment/4422343/+files/0014-kpartx-long-path.patch -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to multipath-tools in Ubuntu. https://bugs.launchpad.net/bugs/1469143 Title: kpartx -d fails with image paths longer than 63 characters To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/multipath-tools/+bug/1469143/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs