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Old 12-10-2008, 06:22 PM
"Bryan McLellan"
 
Default multipath broken in Intrepid

The arguments for /lib/udev/scsi_id in udev have changed, breaking
multipath in Intrepid. Upstream head for multipath has been updated,
but there hasn't been a newer release. Scott Remnant has expressed
that udev won't be patched to fix this. The multipath-tools package
lists this list as the maintainer. Are there any intentions to patch
multipath-tools for Intrepid or is it considered a low priority? I'm
looking for the state of this before I ppa it.

https://bugs.launchpad.net/bugs/306723

Bryan McLellan

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Old 12-15-2008, 10:52 AM
Scott James Remnant
 
Default multipath broken in Intrepid

On Wed, 2008-12-10 at 11:22 -0800, Bryan McLellan wrote:

> The arguments for /lib/udev/scsi_id in udev have changed, breaking
> multipath in Intrepid. Upstream head for multipath has been updated,
> but there hasn't been a newer release. Scott Remnant has expressed
> that udev won't be patched to fix this. The multipath-tools package
> lists this list as the maintainer. Are there any intentions to patch
> multipath-tools for Intrepid or is it considered a low priority? I'm
> looking for the state of this before I ppa it.
>
scsi_id is an internal udev tool with a non-stable API (which is why
it's under /lib, not in a usual binary directory like /sbin).

Packages that use unstable, internal APIs are intended to be kept up to
date with any breakage.

multipath-tools almost certainly should be using libudev instead.

Scott
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Old 12-15-2008, 05:44 PM
"Bryan McLellan"
 
Default multipath broken in Intrepid

On Mon, Dec 15, 2008 at 3:52 AM, Scott James Remnant
<scott@canonical.com> wrote:
> scsi_id is an internal udev tool with a non-stable API (which is why
> it's under /lib, not in a usual binary directory like /sbin).
>
> Packages that use unstable, internal APIs are intended to be kept up to
> date with any breakage.

My original message was relatively old in my hunt to fix this, due to
this list being moderated. I've since created two patches [1][2] to
get multipath-tools working.

> multipath-tools almost certainly should be using libudev instead.

I don't see any chatter on the dm-devel list [3] about switching to
use libudev.

The announcement for udev-131 [4] from 2008-11-07 says that libudev
"is still under development, marked as experimental, and its interface
may change as long as the DeviceKit integration is not finished." None
of the more recent (mostly bugfixes) release notes mention libudev.
The udev-127 release [5] from 2008-08-29 which first mentions libudev
also echoes it's experimental state. libudev appears to be first
commited to the tree around 2008-08-27. Intrepid is only running
udev-124, which doesn't have any of the libudev functionality yet.

I would agree that while multipath-tools should use libudev when it's
ready, but would argue it's probably premature to expect it to.

Bryan McLellan

[1] https://bugs.launchpad.net/ubuntu/+source/udev/+bug/306723/comments/5
[2] https://bugs.launchpad.net/ubuntu/+source/multipath-tools/+bug/307032/comments/1
[3] http://www.redhat.com/mailman/listinfo/dm-devel
[4] http://marc.info/?l=linux-hotplug&m=122603927128497&w=2
[5] http://marc.info/?l=linux-hotplug&m=122004157828440&w=2

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Subject: Re: Call for testing: GNOME/KDE related power consumption tweaks
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Ol=E1 Martin e a todos.

On Monday 15 December 2008 15:18:23 Martin Pitt wrote:
<snip>
> However, before scratching this off, I'd like to ask all of you for
> more input. Please run powertop for a bit and tell us whether there is
> anything we could improve in GNOME or KDE by default.

Mine is showing Firefox-3.1. never noticed that before your email.

Top causes for wakeups:
31.2% (1499.6) firefox-3.1 : futex_wait (hrtimer_wakeup)=20
11.6% (558.4) pulseaudio : common_timer_set (posix_timer_fn)=20
8.8% (422.0) <kernel IPI> : Rescheduling interrupts=20
8.1% (388.8) <interrupt> : iwlagn=20
6.5% (313.2) pulseaudio : schedule_hrtimeout_range (hrtimer_wakeu=
p)=20
6.5% (311.8) <interrupt> : uhci_hcd:usb3, ehci_hcd:usb7=20
6.0% (289.0) <interrupt> : HDA Intel=20
5.9% (282.0) USB device 7-6 : USB 2.0 PC Camera ()=20
3.8% (184.6) <interrupt> : PS/2 keyboard/mouse/touchpad=20
3.8% (181.4) <interrupt> : acpi=20
2.2% (106.8) firefox-3.1 : schedule_hrtimeout_range (hrtimer_wakeu=
p)=20
0.6% ( 29.8) dropboxd : schedule_hrtimeout_range (hrtimer_wakeu=
p)=20
0.4% ( 21.2) kmail : schedule_hrtimeout_range (hrtimer_wakeu=
p)=20
0.4% ( 20.2) gnome-panel : schedule_hrtimeout_range (hrtimer_wakeu=
p)=20
0.4% ( 19.6) update-manager : schedule_hrtimeout_range (hrtimer_wakeu=
p)=20
0.3% ( 13.6) <kernel core> : sk_reset_timer (tcp_delack_timer)=20
0.3% ( 12.2) <interrupt> : ahci=20
0.2% ( 11.4) Xorg : hrtimer_start (it_real_fn)=20
0.2% ( 10.8) transmission : schedule_timeout (process_timeout)=20
0.2% ( 10.2) transmission : sk_reset_timer (tcp_write_timer)=20
0.2% ( 10.0) nautilus : futex_wait (hrtimer_wakeup)=20
0.2% ( 9.8) gnome-do : futex_wait (hrtimer_wakeup)
0.2% ( 9.6) <interrupt> : ata_piix
0.2% ( 8.6) <kernel IPI> : TLB shootdowns
0.2% ( 8.0) <kernel module> : usb_hcd_poll_rh_status (rh_timer_func)
0.1% ( 6.6) Xorg : sk_reset_timer (tcp_delack_timer)
0.1% ( 4.2) gnome-terminal : schedule_hrtimeout_range (hrtimer_wakeu=
p)
0.1% ( 4.2) <kernel module> : neigh_table_init_no_netlink (neigh_peri=
odic_timer)
0.1% ( 4.0) parcellite : schedule_hrtimeout_range (hrtimer_wakeu=
p)
0.1% ( 4.0) nagios3 : do_nanosleep (hrtimer_wakeup)
0.1% ( 2.8) trackerd : schedule_hrtimeout_range (hrtimer_wakeu=
p)
0.1% ( 2.8) fuser : sk_reset_timer (tcp_delack_timer)
0.0% ( 2.0) <kernel core> : clocksource_check_watchdog (clocksource=
_watchdog)
0.0% ( 2.0) mysqld-akonadi : schedule_hrtimeout_range (hrtimer_wakeu=
p)
0.0% ( 2.0) trackerd : do_nanosleep (hrtimer_wakeup)
0.0% ( 2.0) mysqld : schedule_hrtimeout_range (hrtimer_wakeu=
p)
0.0% ( 2.0) firefox : futex_wait (hrtimer_wakeup)
0.0% ( 1.8) kmail : sk_reset_timer (tcp_delack_timer)
0.0% ( 1.6) pidgin : sk_reset_timer (tcp_write_timer)
0.0% ( 1.6) Xorg : schedule_hrtimeout_range (hrtimer_wakeu=
p)
0.0% ( 1.4) dovecot : schedule_timeout (process_timeout)
0.0% ( 1.4) firefox-3.1 : sk_reset_timer (tcp_delack_timer)
0.0% ( 1.2) <kernel core> : neigh_table_init_no_netlink (neigh_peri=
odic_timer)
0.0% ( 1.0) <interrupt> : uhci_hcd:usb1, ohci1394, nvidia
0.0% ( 1.0) xfsaild : schedule_timeout (process_timeout)
0.0% ( 1.0) <kernel core> : __enqueue_rt_entity (sched_rt_period_ti=
mer)
0.0% ( 1.0) netspeed_applet : schedule_hrtimeout_range (hrtimer_wakeu=
p)
0.0% ( 1.0) cpufreq-applet : schedule_hrtimeout_range (hrtimer_wakeu=
p)
0.0% ( 1.0) Xorg : nv_start_rc_timer (nv_kern_rc_timer)
0.0% ( 1.0) inadyn : do_nanosleep (hrtimer_wakeup)
0.0% ( 1.0) transmission : schedule_hrtimeout_range (hrtimer_wakeu=
p)
0.0% ( 1.0) pidgin : schedule_hrtimeout_range (hrtimer_wakeu=
p)
0.0% ( 1.0) gnome-do : sk_reset_timer (tcp_delack_timer)
0.0% ( 0.8) ping : schedule_hrtimeout_range (hrtimer_wakeu=
p)
0.0% ( 0.8) xfsbufd : schedule_timeout (process_timeout)
0.0% ( 0.6) python : schedule_hrtimeout_range (hrtimer_wakeu=
p)
0.0% ( 0.6) iwlagn : ieee80211_authenticate (ieee80211_sta_t=
imer)
0.0% ( 0.6) hald-addon-stor : schedule_hrtimeout_range (hrtimer_wakeu=
p)
0.0% ( 0.4) transmission : sk_reset_timer (tcp_delack_timer)
0.0% ( 0.4) kio_imap4 : sk_reset_timer (tcp_write_timer)
0.0% ( 0.4) firefox-3.1 : sk_reset_timer (tcp_write_timer)


=2D-=20
BUGabundo )
(``-_-=B4=B4) http://LinuxNoDEI.BUGabundo.net
Linux user #443786 GPG key 1024D/A1784EBB
My new micro-blog @ http://BUGabundo.net
ps. My emails tend to sound authority and aggressive. I'm sorry in advance.=
I'll try to be more assertive as time goes by...

Merry xtmas and Happy New Year
http://www.ubuntu-pt.org/static/pictures/ecard.png

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