Bug#557359: Can't detect multipath devices
Guido Günther
Version: 1.97+20091115-1
Severity: critical
File: /usr/sbin/grub-probe
Hi,
grub-probe is unable to handle multipath devices:
node1:~# dpkg --configure -a
Setting up grub-pc (1.97+20091115-1) ...
Generating core.img
grub-probe: error: no mapping exists for `mpath0-part1'
Auto-detection of a filesystem module failed.
Please specify the module with the option `--modules' explicitly.
dpkg: error processing grub-pc (--configure):
subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of grub:
grub depends on grub-pc; however:
Package grub-pc is not configured yet.
dpkg: error processing grub (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
grub-pc
grub
This breaks upgrades from Lenny to sid. The multipath map is:
# multipath -l
mpath0 (SQEMU QEMU HARDDISK ) dm-0 QEMU,QEMU HARDDISK
size=10G features='0' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=-1 status=active
`- 0:0:0:0 sda 8:0 active undef running
# dmsetup info /dev/mapper/mpath0
Name: mpath0
State: ACTIVE
Read Ahead: 256
Tables present: LIVE
Open count: 2
Event number: 1
Major, minor: 254, 0
Number of targets: 1
UUID: mpath-SQEMU QEMU HARDDISK
Reinstalling grub-legacy works around the issue.
Cheers,
-- Guido
-- System Information:
Debian Release: squeeze/sid
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.6.32-rc7 (SMP w/2 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages grub-common depends on:
ii base-files 5.0.0 Debian base system miscellaneous f
ii libc6 2.10.1-7 GNU C Library: Shared libraries
ii libfreetype6 2.3.11-1 FreeType 2 font engine, shared lib
ii zlib1g 1:1.2.3.3.dfsg-15 compression library - runtime
Versions of packages grub-common recommends:
ii os-prober 1.35 utility to detect other OSes on a
Versions of packages grub-common suggests:
pn grub-emu <none> (no description available)
pn multiboot-doc <none> (no description available)
-- no debconf information
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Felix Zielcke
thanks
Am Samstag, den 21.11.2009, 20:53 +0100 schrieb Guido Günther:
> Hi Felix,
> Thanks for the quick response.
>
> On Sat, Nov 21, 2009 at 07:04:42PM +0100, Felix Zielcke wrote:
> > Looks like you forgot about 483971 and 442382.
> > and maybe even others. Haven't looked this multipath issue now all
> up.
> > But i remembered it was you who has interest in multipath support
> inside
> > debian-installer and so grub2 too.
> Nope, I didn't. This one is different as it breaks upgrades from
> existing and supported installations.
It is not different. The older ones were reassigned to grub-common and
you filed this against grub-common (actually even grub-probe).
If it's more important then wishlist then the severity of that bug needs
to be changed and not a new one filed which exactly says the same: to
implement multipath support inside grub-probe.
> > I'm a bit unsure if I should just merge this with 483971 or reassign
> at
> > GRUB Legacy, where the dummy grub package still is, and add a
> debconf
> > note that gets shown when multipath is detected and tells people to
> keep
> > Legacy for now.
> That would at least be a workaround.
>
> > But it still looks like that you're the only one for whom multipath
> is
> > important. (Well and Frans who considers this as a blocker, but it
> > didn't block the switch to grub2 as default for d-i alpha1)
> Don't think so. Multipath is run in "enterprise" environments where
> people are much more conservative regarding upgrades. I'm starting to
> get reports from etch->lenny upgrades so don't expect many others to
> notice within the next year.
> Cheers,
> -- Guido
Seems like I have to take it literarily that you get the reports.
The debian-testing mailing list were all upgrade-reports end doestn't
say anything about multipath back to 2008/12.
--
Felix Zielcke
Proud Debian Maintainer and GNU GRUB developer