Say I have a origin url /example-url/endpoint?lang-code=something needs to be rewritten as /example-url/anther_endpoint?lang_code=something.
and the rule like rewrite ^/example-url/endpoint /example-url/anther_endpoint?lang_code=$arg_lang-code permanent won't work, because hyper(-) is a special character,
So can this be archived by nginx?
We know nginx can proxy WebSocket since version 1.3.13, and we also know some times WebSocket server will valid the 'Origin' header, so someone said you can do something like:
proxy_set_header Origin "";
render the origin header to null, but I test it using my Wheezy box(nginx-extras package in backports), and there is a negative result, server side still get the Origin header from client side.
So here is the question: that line does not work, right?
Here is the story, a little complicated. long time ago, i installed the a Linux system with only one LVM volume group which had only one physical volume(let's call it disk A), then i got a raid card(lsi 1064e controller), and built a raid1 array with two disks. naturally i decided to migrate my system (and the data) to the new raid array, i did that with command pvmove. everything looked fine, and i removed the disk A from the volume group(using pvremove) and used it for another box.
about several months ago, i got one new disk, and then i decided to build an ime raid array with three disks instead of raid1. so i got disk A back, and used pvmove to copy every thing in origin raid 1 array into disk A. after i finished the work, i used pvmove again, to copy things back to new ime raid. (after i recovered the volume group, i confirmed that i did running vgreduce at that time). but i didn't detached disk A from the box for some reason.
and today i repartitioned the disk A and removed it from the box again for something else. after i reset the box, the grub can not find the volume group!!!!. then i tried gentoo systemrescuecd, pvs printed nothing at all, and testdisk said "No LVM or LVM2 structure". obviously something like LVM metadata of the volume group in disk A had been lost.
now i'm running testdisk for a while, and waiting, i have to say i'm a little worried about my data, and i really think i need some advise about recovering the LVM metadata or just the data.
So now my question is why pvs can not give information? i mean i just repartitioned and removed one disk which was not in the volume group. if that caused my trouble, does it mean there is a bug in lvm?