bug#24130: RAID config boot hangs at [...] Clocksource: Switched to clocksource tsc

[Ludovic Courtès]

myglc2  skribis:

> On 01/11/2017 at 23:14 Ludovic Courtès writes:
>
>> Could you tell me if this bug is still relevant?
>
> Hi Ludo’,
>
> Sorry for the delay, I had to swap hardware around to revisit this.  I
> am now able to assemble 3 arrays as shown below, so I think you should
> close the bug.

Excellent, thanks for reporting back!

Ludo’.

bug#24130: RAID config boot hangs at [...] Clocksource: Switched to clocksource tsc

[myglc2]

On 01/11/2017 at 23:14 Ludovic Courtès writes:

> Could you tell me if this bug is still relevant?

Hi Ludo’,

Sorry for the delay, I had to swap hardware around to revisit this.  I
am now able to assemble 3 arrays as shown below, so I think you should
close the bug.

config:

(define md0
  (mapped-device
   (source (list "/dev/sdb1" "/dev/sdc1"))
   (target "/dev/md0")
   (type raid-device-mapping)))
(define md1
  (mapped-device
   (source (list "/dev/sdb5" "/dev/sdc5"))
   (target "/dev/md1")
   (type raid-device-mapping)))
(define md2
  (mapped-device
   (source (list "/dev/sdb6" "/dev/sdc6"))
   (target "/dev/md2")
   (type raid-device-mapping)))
(operating-system
 (host-name "g1")
 (timezone "America/New_York")
 (locale "en_US.utf8")
 (bootloader (grub-configuration (device "/dev/sda")))
 (mapped-devices (list md0 md1 md2))
 ;; Add a kernel module for RAID-1.
 (initrd (lambda (file-systems . rest)
   (apply base-initrd file-systems
  #:extra-modules '("raid1")
  rest)))
 (file-systems (cons*
(file-system
 (device "ssd-root")
 (title 'label)
 (mount-point "/")
 (type "ext4"))
(file-system
 (title 'device)
 (device "/dev/md0")
 (dependencies (list md0))
 (mount-point "/mnt/md0")  
 (create-mount-point? #t)
 (type "ext4")
 )
(file-system
 (title 'device)
 (device "/dev/md2")
 (dependencies (list md2))
 (mount-point "/mnt/md2")  
 (create-mount-point? #t)
 (type "ext4")
 )
%base-file-systems))


guix version:

guix (GNU Guix) 0.12.0
v0.12.0-456-gb0a567640

bug#24130: RAID config boot hangs at [...] Clocksource: Switched to clocksource tsc

[Ludovic Courtès]

Hi!

Could you tell me if this bug is still relevant?

  https://bugs.gnu.org/24130

Ludo’.

l...@gnu.org (Ludovic Courtès) skribis:

> Hi myglc2,
>
> myglc2  skribis:
>
>> I am attempting to set up RAID.  First, following the doc, I ended up
>> with system39.scm, attached, excerpt below:
>
> Sorry for the looong delay.  In addition to the doc, there’s no a system
> test in (gnu tests install) (search for “raid-root-os”) that installs
> GuixSD with a RAID root file system, and this has allowed us to fix a
> couple of bugs in this area.
>
> Could you try again, following the doc and/or the test, and see how it
> goes?
>
> TIA,
> Ludo’.

bug#24130: RAID config boot hangs at [...] Clocksource: Switched to clocksource tsc

[Ludovic Courtès]

Hi myglc2,

myglc2  skribis:

> I am attempting to set up RAID.  First, following the doc, I ended up
> with system39.scm, attached, excerpt below:

Sorry for the looong delay.  In addition to the doc, there’s no a system
test in (gnu tests install) (search for “raid-root-os”) that installs
GuixSD with a RAID root file system, and this has allowed us to fix a
couple of bugs in this area.

Could you try again, following the doc and/or the test, and see how it
goes?

TIA,
Ludo’.

bug#24130: RAID config boot hangs at [...] Clocksource: Switched to clocksource tsc

[myglc2]

I am attempting to set up RAID.  First, following the doc, I ended up
with system39.scm, attached, excerpt below:

(operating-system
  (host-name "g1")
  (timezone "America/New_York")
  (locale "en_US.utf8")
  (bootloader (grub-configuration (device "/dev/sda")))
  (initrd (lambda (fs . args)
(apply base-initrd fs
   #:extra-modules '("raid1")
   #:mapped-devices '((mapped-device
   (source (list "/dev/sdb1" "/dev/sdc1"))
   (target "/dev/md0")
   (type raid-device-mapping))) 
  
   args)))
  (file-systems (cons (file-system
(device "ssd-root")
(title 'label)
(mount-point "/")
(type "ext4"))
  %base-file-systems))

In this config I was attempting to have the array assembled, but not
mounted after the boot. It did not look promissing that 'guix system
reconfigure system39.scm' did not assemble the array. Then as one might
expect, the resulting system boots but the array is not assembled.

After a couple helpful exchanges with Andreas on the devel list, I ended
up with system40.scm, attached, excerpt below:

(define md0
  (mapped-device
   (source (list "/dev/sdb1" "/dev/sdc1"))
   (target "/dev/md0")
   (type raid-device-mapping)))
(operating-system
  (host-name "g1")
  (timezone "America/New_York")
  (locale "en_US.utf8")
  (bootloader (grub-configuration (device "/dev/sda")))
  (mapped-devices (list md0))
  ;; Add a kernel module for RAID-1.
  (initrd (lambda (file-systems . rest)
(apply base-initrd file-systems
   #:extra-modules '("raid1")
   rest)))
  (file-systems (cons*
 (file-system
   (device "ssd-root")
   (title 'label)
   (mount-point "/")
   (type "ext4"))
 (file-system
   (title 'device)
   (device "/dev/md0")
   (dependencies (list md0))
   (mount-point "/mnt/md0")
   (create-mount-point? #t)
   (type "ext4"))
 %base-file-systems))


Here the intent is to have the array assembled and mounted after the
boot. It looked promissing when 'guix system reconfigure system40.scm'
assembled and mounted the array (see system40.log). But on reboot the
system hangs with the console showing:

[...] clocksource: Switched to clocksource tsc

And /var/log/sheperd.log contains:

2016-08-01 18:15:13 Service root has been started.
2016-08-01 18:15:13 ERROR: In procedure scm-error:
2016-08-01 18:15:13 ERROR: no code for module (gnu build file-systems)
2016-08-01 18:15:13 
2016-08-01 18:15:13 Entering a new prompt.  Type `,bt' for a backtrace or `,q' 
to continue.
2016-08-01 18:15:13 GNU Guile 2.0.11
2016-08-01 18:15:13 Copyright (C) 1995-2014 Free Software Foundation, Inc.
2016-08-01 18:15:13 
2016-08-01 18:15:13 Guile comes with ABSOLUTELY NO WARRANTY; for details type 
`,show w'.
2016-08-01 18:15:13 This program is free software, and you are welcome to 
redistribute it
2016-08-01 18:15:13 under certain conditions; type `,show c' for details.
2016-08-01 18:15:13 
2016-08-01 18:15:13 Enter `,help' for help.

For this config, /var/log/messages (messages40.log) is also attached.

TIA - George




messages40.log
Description: Binary data


system40.log
Description: Binary data


system40.scm
Description: Binary data


system39.scm
Description: Binary data