I'm not sure of the ramifications of these error messages but I can confirm they are still there.
On Mon, Feb 12, 2018 at 8:35 AM, Norman Henderson <norm.aud...@gmail.com> wrote: > Ladies and Gentlemen, The technical stuff is way over my head but I am > getting the same syslog errors and the same inconsistent device paths on > an HP Proliant ML110 G7 with Ubuntu 16.04.3 kernel 4.4.0-98-generic. > > It seems clear that no-one is taking ownership of this to fix it in an > actual update that ordinary people like me can install in the normal > course of system updates. The nature of open source software I guess. > > However could someone please let me know: > - is this just an annoying message that won't be fixed, or are there > operational implications? > - if there are implications, are they serious? > - if they are serious, could you explain (or point me at a resource that > explains) in detail, how to install the patch provided. I've never done that > before. > > Thank you in advance! > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1611945 > > Title: > /dev/disk/by-path not properly populated for (e)SATA port multiplier > disks > > Status in systemd package in Ubuntu: > Confirmed > > Bug description: > We have a just-installed Ubuntu 16.04 LTS machine with a number of > disks behind port-multiplier eSATA ports, all of them driven by a SiI > 3124 controller (sata_sil24 kernel driver). Our machine sees all disks > on all channels, however under 16.04 only one disk from each channel > shows up in /dev/disk/by-path/ (all disks show up in /dev/disk/by-id > and /dev/disk/by-uuid). For our usage this is a severe defect because > we rotate disks in and out of the external enclosure and rely on > mounting specific slots in the external enclosure through /dev/disk > /by-path. > > This did not happen in Ubuntu 12.04 LTS, the release that this machine > was previously running. > > According to 'udevadm info --export-db' and 'udevadm test-builtin > path_id' and so on, systemd's udev stuff is assigning all drives > behind the same port the same disk/by-path data (ID_PATH et al). In > 'udevadm info /sys/block/sdX', the 'P:' and 'E: DEVPATH=' values show > a difference in the target portion of PCI path, eg: > > P: > /devices/pci0000:00/0000:00:01.0/0000:01:00.0/0000:02:00.0/ata1/host0/target0:0:0/0:0:0:0/block/sda > P: > /devices/pci0000:00/0000:00:01.0/0000:01:00.0/0000:02:00.0/ata1/host0/target0:1:0/0:1:0:0/block/sdb > > However the 'S: disk/by-path', 'E: DEVLINKS=', and 'E: ID_PATH' > portions do not. For both devices above, we see: > > S: disk/by-path/pci-0000:02:00.0-ata-1 > E: ID_PATH=pci-0000:02:00.0-ata-1 > > Naturally only one device can have a /dev/disk/by- > path/pci-0000:02:00.0-ata-1 symlink, so instead of four disks per > channel in /dev/disk/by-path we see one. > > Ubuntu release: 16.04 > > Package versions from 'apt-cache policy udev systemd': > udev: > Installed: 229-4ubuntu7 > systemd: > Installed: 229-4ubuntu7 > > 'journalctl -b' reports that during boot systemd does report some > 'appeared twice with different sysfs paths' notes, eg: > > Aug 10 13:34:21 verdandi systemd[1]: dev-disk-by\x2dpath- > pci\x2d0000:02:00.0\x2data\x2d1\x2dpart1.device: Dev dev-disk-by > \x2dpath-pci\x2d0000:02:00.0\x2data\x2d1\x2dpart1.device appeared > twice with different sysfs paths > > /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/0000:02:00.0/ata1/host0/target0:3:0/0:3:0:0/block/sdd/sdd1 > and > > /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/0000:02:00.0/ata1/host0/target0:0:0/0:0:0:0/block/sda/sda1 > > However it doesn't seem to be reporting this for all port-multiplier > drives and their partitions. > > If it would be useful I can attach full 'udevadm info --export-db' > output or the like. > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1611945/+subscriptions -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1611945 Title: /dev/disk/by-path not properly populated for (e)SATA port multiplier disks To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1611945/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
