[Bug 1766770] Re: 4.15.0-15-generic can't find root device

2018-04-25 Thread William Grant 
*** This bug is a duplicate of bug 1765232 ***
https://bugs.launchpad.net/bugs/1765232

** This bug has been marked a duplicate of bug 1765232
   Kernel 4.15.0-15 breaks Dell PowerEdge 12th Gen servers

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Title:
  4.15.0-15-generic can't find root device

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[Bug 1766770] Re: 4.15.0-15-generic can't find root device

2018-04-25 Thread Barry Price 
I've confirmed this issue on a second G7 with the same model of RAID
controller but a simpler disk setup (no bcache or mdraid):

https://pastebin.ubuntu.com/p/bK5xQrXZmD/

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Title:
  4.15.0-15-generic can't find root device

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[Bug 1766770] Re: 4.15.0-15-generic can't find root device

2018-04-24 Thread Barry Price 
apport information

** Tags added: apport-collected xenial

** Description changed:

  This is on a Hewlett-Packard ProLiant DL380 G7, with a Smart Array P410i
  RAID controller containing a RAID 1+0 array of four SATA hard drives.
  
  It's running Ubuntu 16.04 with the linux-image-generic-hwe-16.04-edge
  packages installed.
  
  The root partition consists of a simple ext4 filesystem on /dev/sda1,
  which is on the RAID array
  
  There is a more complex secondary mount involving mdraid and bcache
  intended to be mounted at /srv - but we're seeing problems before that
  comes into play.
  
  Booting into the last 4.13 kernel (4.13.0-39-generic) works fine.
  
- Booting into the latest 4.15 kernel (4.15.0-15-generic) results in the
- root device not being found, and a stacktrace before an initramfs
- prompt: https://pastebin.ubuntu.com/p/JnTXQ5YP9W/
+ Booting into the latest 4.15 kernel (4.15.0-15-generic) results in the root 
device not being found, and a stacktrace before an initramfs prompt: 
https://pastebin.ubuntu.com/p/JnTXQ5YP9W/
+ --- 
+ AlsaDevices:
+  total 0
+  crw-rw 1 root audio 116,  1 Apr 25 03:37 seq
+  crw-rw 1 root audio 116, 33 Apr 25 03:37 timer
+ AplayDevices: Error: [Errno 2] No such file or directory
+ ApportVersion: 2.20.1-0ubuntu2.16
+ Architecture: amd64
+ ArecordDevices: Error: [Errno 2] No such file or directory
+ AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
+ DistroRelease: Ubuntu 16.04
+ IwConfig: Error: [Errno 2] No such file or directory
+ MachineType: HP ProLiant DL380 G7
+ Package: linux (not installed)
+ PciMultimedia:
+  
+ ProcFB: 0 radeondrmfb
+ ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-39-generic 
root=UUID=dd30f756-2a4d-43e5-b49c-dfbafbceea9d ro console=ttyS1,38400 nosplash
+ ProcVersionSignature: Ubuntu 4.13.0-39.44~16.04.1-generic 4.13.16
+ RelatedPackageVersions:
+  linux-restricted-modules-4.13.0-39-generic N/A
+  linux-backports-modules-4.13.0-39-generic  N/A
+  linux-firmware 1.157.17
+ RfKill: Error: [Errno 2] No such file or directory
+ Tags:  xenial
+ Uname: Linux 4.13.0-39-generic x86_64
+ UpgradeStatus: No upgrade log present (probably fresh install)
+ UserGroups: adm
+ _MarkForUpload: True
+ dmi.bios.date: 08/16/2015
+ dmi.bios.vendor: HP
+ dmi.bios.version: P67
+ dmi.chassis.type: 23
+ dmi.chassis.vendor: HP
+ dmi.modalias: 
dmi:bvnHP:bvrP67:bd08/16/2015:svnHP:pnProLiantDL380G7:pvr:cvnHP:ct23:cvr:
+ dmi.product.family: ProLiant
+ dmi.product.name: ProLiant DL380 G7
+ dmi.sys.vendor: HP

** Attachment added: "CRDA.txt"
   https://bugs.launchpad.net/bugs/1766770/+attachment/5126864/+files/CRDA.txt

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Title:
  4.15.0-15-generic can't find root device

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[Bug 1766770] Re: 4.15.0-15-generic can't find root device

2018-04-24 Thread James Troup 
William Grant points out:

 commit 8b834bff1b73dce46f4e9f5e84af6f73fed8b0ef
 Date:   Tue Mar 13 17:42:39 2018 +0800
 scsi: hpsa: fix selection of reply queue
 
 Since commit 84676c1f21e8 ("genirq/affinity: assign vectors to all
 possible CPUs") we could end up with an MSI-X vector that did not have
 any online CPUs mapped. This would lead to I/O hangs since there was no
 CPU to receive the completion.

Our 4.15 does not have that commit, but does have the referenced one.

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Title:
  4.15.0-15-generic can't find root device

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[Bug 1766770] Re: 4.15.0-15-generic can't find root device

2018-04-24 Thread James Troup 
This appears to be a regression in the HPSA driver.  In the 4.13 kernel,
the following hpsa output is seen:

  https://paste.ubuntu.com/p/Bq9ktJWtBm/

And the HW RAID volume ends up as /dev/sda.  In 4.15, the HW RAID is not
found and one of the SSD volumes ends up as /dev/sda/

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Title:
  4.15.0-15-generic can't find root device

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[Bug 1766770] Re: 4.15.0-15-generic can't find root device

2018-04-24 Thread Barry Price 
** Attachment added: "version.log"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1766770/+attachment/5126847/+files/version.log

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Title:
  4.15.0-15-generic can't find root device

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