17:45 <andreas> cyphermox: I tried with a serial number for vda, it failed in the same way 17:46 <cyphermox> andreas: not necessarily a serial 17:46 <andreas> isn't the serial what allows the by-id symlink to be created? 17:46 <rafaeldtinoco> andreas: that was my previous summary 17:46 <rafaeldtinoco> in the case 17:46 <rafaeldtinoco> (about the dbconfig variable) 17:46 <andreas> k 17:47 <rafaeldtinoco> SO 17:47 <rafaeldtinoco> device-map is gone in eoan =) there is a patch restoring it 17:47 <rafaeldtinoco> let me check previous versions :\ 17:47 <rafaeldtinoco> https://www.irccloud.com/pastebin/h3c9ZFYP/ 17:48 <andreas> these are the disk/by-id links in both cases: https://people.canonical.com/~andreas/disk-by-id.png 17:48 <andreas> cyphermox: ^ 17:48 <andreas> there is no symlink to the whole vda device 17:48 <andreas> which is what you meant probably 17:49 <rafaeldtinoco> andreas: this is coming from udevadm DEVLINKS most likely 17:49 <andreas> but this is on a bionic host, where qemu/libvirt doesn't generate a serial for you automatically 17:50 <rafaeldtinoco> #ifdef __linux__ 17:50 <rafaeldtinoco> { 17:50 <rafaeldtinoco> DIR *dir = opendir ("/dev/disk/by-id"); 17:50 <andreas> in the straight-to-virtio case it worked flawlessly, bootdev was /dev/vda 17:51 <rafaeldtinoco> from deviceiter.c -> grub_util_iterate_devices 17:51 <andreas> and there is no symlink in /dev/disk/by-id 17:51 <rafaeldtinoco> used by grub-mkdevicemap.c 17:51 <rafaeldtinoco> which is inexistent in recent grub2 upstream 17:51 <rafaeldtinoco> we basically recreate the grub-mkdevicemap again 17:51 <rafaeldtinoco> so we can rely on it for our scripts 17:51 <rafaeldtinoco> so deviceiter.c explains the "sort" for that list 17:52 <rafaeldtinoco> /* Now add all the devices in sorted order. */ 17:52 <rafaeldtinoco> for (dev = 0; dev < devs_len; ++dev) 17:52 <rafaeldtinoco> =) 17:52 <andreas> so if you look at this comparison: https://people.canonical.com/~andreas/disk-by-id.png 17:52 <andreas> that matches what that d-i prompt is asking us, and the output of grub-mkdevicemap with some removed/filtered 17:53 <rafaeldtinoco> you are getting dm-0 first 17:53 <andreas> that one is filtered 17:53 <rafaeldtinoco> instead of sda (left side) 17:53 <andreas> by "something" 17:53 <rafaeldtinoco> ah ok 17:53 <andreas> left side, sda, then sda1 17:53 <andreas> right side, I get vda1 17:53 <rafaeldtinoco> we have no vda 17:53 <rafaeldtinoco> at the right side 17:53 <andreas> yet it's in the menu: https://people.canonical.com/~andreas/which-dev-is-first.png 17:54 <andreas> but with no "(extra description)" 17:54 <rafaeldtinoco> i mean in /dev/disk/by-id 17:54 <rafaeldtinoco> where is vda only 17:54 <andreas> right, no vda there, probably because it has no serial 17:54 <andreas> I don't have screenshots for the case with a serial now 17:54 <andreas> so many combinations to try 17:54 <rafaeldtinoco> no serial because its not SCSI 17:54 <andreas> yes 17:54 <rafaeldtinoco> no VPDs 17:54 <rafaeldtinoco> now it all makes sense 17:54 <andreas> qemu on eoan assigns a serial 17:55 <rafaeldtinoco> let me copy this to the public bug =) 17:55 <andreas> 00001 or something 17:55 <andreas> so you probably have that 17:55 <andreas> since your host is eoan 17:55 — rafaeldtinoco checks 17:56 <rafaeldtinoco> https://www.irccloud.com/pastebin/BaynZGW7/ 17:56 <rafaeldtinoco> andreas: ^ for scsi 17:56 <rafaeldtinoco> andreas: SO, the udev rules for scsi SERIAL are in initramfs 17:56 <rafaeldtinoco> cause the installer does not have udev rules for scsi 17:57 <andreas> rafaeldtinoco: you pasted the non-virtio case 17:57 <andreas> sda 17:57 <cyphermox> rafaeldtinoco: the devicemap program isn't at fault 17:57 <rafaeldtinoco> no, i was reading it to understand the sort 17:57 <cyphermox> I think this is udev not creating a symlink for vda for whatever reason it somehow decided not to 17:57 <rafaeldtinoco> like andreas said 17:58 <rafaeldtinoco> udev is not creating the device 17:58 <rafaeldtinoco> yep, 17:58 <cyphermox> yeah, sorry; I had a power outage so I'm scrambling to follow ;) 17:58 <rafaeldtinoco> andreas: i dont have the virtio case here 17:58 — rafaeldtinoco dumb created a single VM 17:58 <rafaeldtinoco> i could have had 2 in parallel 17:59 <rafaeldtinoco> question: has this LVM + virtio setup EVER worked ? 17:59 <rafaeldtinoco> andreas: why do you say the serial was created before ? 17:59 <rafaeldtinoco> because of your tests ? 18:00 <andreas> the first attempts I did were on a laptop with eoan, and I noticed that virt-manager there filled in the serial when selecting a virtio device 18:00 <rafaeldtinoco> yep, i noticed from the debconf menu 18:00 <rafaeldtinoco> (like u said, lacking the description) 18:00 <andreas> but I can start one here on bionic, just filling in the serial manually with a very recognizable number :) 18:00 <andreas> like 9999 18:01 <rafaeldtinoco> 60-persistent-storage.rules:# legacy virtio-pci by-path links (deprecated) 18:01 <rafaeldtinoco> andreas: ^ 18:01 <andreas> rafaeldtinoco: about it ever having worked before, it must have, but I don't remember having tried this combination specifically 18:01 <cyphermox> rafaeldtinoco: yes, lvm + virtio was working; this is a common install scenario 18:02 <rafaeldtinoco> # virtio-blk 18:02 <rafaeldtinoco> KERNEL=="vd*[!0-9]", ATTRS{serial}=="?*", ENV{ID_SERIAL}="$attr{serial}", SYMLINK+="disk/by-id/virtio-$env{ID_SERIAL}" 18:02 <rafaeldtinoco> KERNEL=="vd*[0-9]", ATTRS{serial}=="?*", ENV{ID_SERIAL}="$attr{serial}", SYMLINK+="disk/by-id/virtio-$env{ID_SERIAL}-part%n" 18:02 <rafaeldtinoco> so this is failing ^ for initramfs 18:02 <rafaeldtinoco> (this is eoans) 18:02 <rafaeldtinoco> damn i just fixed something really close to this (sg3-utils-udev) 18:02 <rafaeldtinoco> for the other case 18:03 <rafaeldtinoco> https://bugs.launchpad.net/ubuntu/+source/sg3-utils/+bug/1833618 18:03 <mup> Bug #1833618: failing to deploy Ubuntu Disco <curtin:Invalid> <sg3-utils (Ubuntu):In Progress by rafaeldtinoco> <sg3-utils (Ubuntu Bionic):In Progress by rafaeldtinoco> 18:03 <mup> <sg3-utils (Ubuntu Disco):In Progress by rafaeldtinoco> <sg3-utils (Ubuntu Eoan):In Progress by rafaeldtinoco> <https://launchpad.net/bugs/1833618> 18:03 <rafaeldtinoco> curtin was lost because of serials also 18:03 <rafaeldtinoco> but for USB devices 18:03 <rafaeldtinoco> same case 18:03 <rafaeldtinoco> a package would create another udev rules for SERIAL 18:03 <rafaeldtinoco> for usb devices 18:04 <andreas> now I have a symlink in disk/by-id 18:04 <andreas> with a manually entered 9999 serial 18:04 <rafaeldtinoco> u created a serial for the vda 18:04 <rafaeldtinoco> HA 18:04 <andreas> let's see what happens 18:04 <rafaeldtinoco> so we need a udev rule to create an ENVIRONMENT variable for udev 18:04 <rafaeldtinoco> whenever ID_SERIAL is not present in the first udev scan 18:05 <rafaeldtinoco> just like USB does with usb_id -> SERIAL
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1838525 Title: LVM setup fails to install grub on virtio storage To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/debian-installer/+bug/1838525/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
