Hi Luca, great idea! But a dd is more than a lvremove...
But as well it could mean that the deploy script may look for a particular vg which stays present after the dd. Rebooting forces the vgscan not to find this particular vg...
So vgremove is really the good way to clean up a lun, and it should be the official way into the admin guide
Le 03/10/2018 à 13:23, Luca 'remix_tj' Lorenzetto a écrit :
On Wed, Oct 3, 2018 at 12:24 PM Nathanaël Blanchet <[email protected]> wrote:Hi all, I tried to install the Hosted-Engine on a FC lun, and the first time, it failed at the end because of a sanlock issue. So I fixed it and the re-deoployed from scratch until this new issue [ ERROR ] Error: Fault reason is "Operation Failed". Fault detail is "[Physical device initialization failed. Please check that the device is empty and accessible by the host.]". HTTP response code is 400. Before, I found that the lun [2] was used: [ INFO ] ok: [localhost] The following luns have been found on the requested target: [1] 36006016039a142001792ac5b1b9e513a 1024GiB DGC VRAID status: free, paths: 8 active [2] 36006016039a142006755b25b7505d26b 100GiB DGC VRAID status: used, paths: 8 active So it was the good explanation for the failure. Following the admin guide, I cleaned up the lun using # dd if=/dev/zero of=/dev/mapper/36006016039a142006755b25b7505d26b bs=1M count=200 oflag=direct And re-deployed it until it complains the device was not empty despite of before. The script still reported that the status of the lun was "used" Finally, I rebooted the host, and that time the script considered the lun status as free. So there is somewhere a bit of code into the ansible script that keeps the old status of the lun before dd, until rebooting.Hello, for removing a volume i usually disable the logical volume (vgremove) and then the physical volume (pvremove). At this point i have the device marked as clean. Luca
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