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Re: FC5t3 - rpm -e hangs up



Hello Jim and everybody who is willing to help,

Runlevel 1 did not help, but I have found the source of the problem, unfortunatelly not the solution:

The source of the problem is that I have deleted some installed files manually, without RPM.
Anyway I think rpm should be robust and it should not hang if some files are deleted.
It should display some warning instead.

I have used -vv option and here is deailed output from rpm:
rm -f /var/lib/rpm/__db*
rpm -evv --justdb kernel-xen0-devel kernel-xenU-devel --allmatches
D: opening  db environment /var/lib/rpm/Packages create:cdb:mpool
D: opening  db index       /var/lib/rpm/Packages rdonly mode=0x0
D: locked   db index       /var/lib/rpm/Packages
D: opening  db index       /var/lib/rpm/Name rdonly mode=0x0
D:  read h#     468 Header SHA1 digest: OK (xxx)
D: opening  db index       /var/lib/rpm/Pubkeys rdonly mode=0x0
D:  read h#    1040 Header sanity check: OK
D: ========== DSA pubkey id xxx xxx (h#1040)
D:  read h#     732 Header V3 DSA signature: OK, key ID 4f2a6fd2
D:  read h#     117 Header SHA1 digest: OK (xxx)
D:  read h#     678 Header V3 DSA signature: OK, key ID 4f2a6fd2
D: ========== --- kernel-xen0-devel-2.6.12-1.1454_FC4 i686/linux 0x0
D: opening  db index       /var/lib/rpm/Requirename rdonly mode=0x0
D: ========== --- kernel-xen0-devel-2.6.13-1.1532_FC4 i686/linux 0x0
D: ========== --- kernel-xenU-devel-2.6.12-1.1454_FC4 i686/linux 0x0
D: ========== --- kernel-xenU-devel-2.6.13-1.1532_FC4 i686/linux 0x0
D: ========== recording tsort relations
D: ========== tsorting packages (order, #predecessors, #succesors, tree, depth, breadth)
D:     0    0    0    3    1    0   - kernel-xenU-devel-2.6.13-1.1532_FC4.i686
D: ========== successors only (0 bytes)
D:     1    0    0    0    1    1   -kernel-xen0-devel-2.6.12-1.1454_FC4.i686
D:     2    0    0    1    1    2   -kernel-xen0-devel-2.6.13-1.1532_FC4.i686
D:     3    0    0    2    1    3   -kernel-xenU-devel-2.6.12-1.1454_FC4.i686
D: closed   db index       /var/lib/rpm/Pubkeys
D: closed   db index       /var/lib/rpm/Requirename
D: closed   db index       /var/lib/rpm/Name
D: closed   db index       /var/lib/rpm/Packages
D: closed   db environment /var/lib/rpm/Packages
D: opening  db environment /var/lib/rpm/Packages joinenv
D: opening  db index       /var/lib/rpm/Packages create mode=0x42
D: mounted filesystems:
D:     i        dev    bsize       bavail       iavail mount point
D:     0 0x00000307     1024       287812       167116 /
D:     1 0x00000003     4096            0           -1 /proc
D:     2 0x00000000     4096            0           -1 /sys
D:     3 0x0000000a     4096            0           -1 /dev/pts
D:     4 0x00000011     4096        64439        64438 /dev/shm
D:     5 0x0000030c     1024       135546        99333 /home
D:     6 0x0000030b     1024       397619       131519 /tmp
D:     7 0x00000308     4096       260065      1462823 /usr
D:     8 0x0000030a     4096       157409       285427 /var
D:     9 0x00000013     4096            0           -1 /proc/sys/fs/binfmt_misc
D:    10 0x00000014     4096            0           -1 /var/lib/nfs/rpc_pipefs
D:    11 0x00000015     4096            0           -1 /net
D: sanity checking 4 elements
D: running pre-transaction scripts
D: computing 24608 file fingerprints
D: computing file dispositions
D: opening  db index       /var/lib/rpm/Basenames create mode=0x42
Killed

It hanged after the last step and I had to kill it.
I have straced it as well and here is the part of output from strace which is running in a neverending loop:
<cut>
stat64("/usr/src/kernels/2.6.12- 1.1454_FC4-xenU-i686/arch/i386", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12-1.1454_FC4-xenU-i686/arch", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12- 1.1454_FC4-xenU-i686/arch/i386/mach-visws", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12-1.1454_FC4-xenU-i686/arch/i386", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12-1.1454_FC4-xenU-i686/arch", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12-1.1454_FC4-xenU-i686/arch/i386/mach-voyager", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12-1.1454_FC4-xenU-i686/arch/i386", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12-1.1454_FC4-xenU-i686/arch", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12-1.1454_FC4-xenU-i686/arch/i386/math-emu", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12-1.1454_FC4-xenU-i686/arch/i386", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12-1.1454_FC4-xenU-i686/arch", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12-1.1454_FC4-xenU-i686/arch/i386/mm", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12-1.1454_FC4-xenU-i686/arch/i386", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12-1.1454_FC4-xenU-i686/arch", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12-1.1454_FC4-xenU-i686/arch/i386/oprofile", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12-1.1454_FC4-xenU-i686/arch/i386", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12-1.1454_FC4-xenU-i686/arch", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12-1.1454_FC4-xenU-i686/arch/i386/pci", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12-1.1454_FC4-xenU-i686/arch/i386", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12-1.1454_FC4-xenU-i686/arch", 0xbfbd6784) = -1 ENOENT (No such file or directory)
stat64("/usr/src/kernels/2.6.12-1.1454_FC4-xenU-i686/arch/i386/power", 0xbfbd6784) = -1 ENOENT (No such file or directory)
<cut>

I have deleted my FC4 xen kernels in FC5t3 manually because I thought that rpm dabase is already clear. I was wrong.
My RPM version is: 4.4.2

Do you think I should open bugzilla ticket?
Do you have any advice how can I reinstall my xen or what can I do?

By the way I have found very good rpm guide, but it did not help me either:
http://www.redhat.com/docs/books/max-rpm

Thank you very much,

Jan

On 3/1/06, Jim Cornette <fct-cornette insight rr com> wrote:
Jan Andrejkovic wrote:
> Hello,
>
> I have upgraded FC4 to FC5t3. I had some xen problems therefore I have
> decided to reinstall xen packages.
> But when I try
> rpm -e kernel-xen-hypervisor-devel or rpm -e kernel-xen-guest-devel rpm
> hangs up and eats almost 100% cpu for long time.
> I need to use kill -9 to stop it.
>
> I have tried to do
> rm -f /var/lib/rpm/__db*
> and
> rpm --rebuilddb
> but nothing helped after those commands - it hangs again.
>
> I have also tried rpm -e --justdb but it did not help either.
>
> Initially it was "yum remove" which hanged first. But as far as I know
> it uses rpm therefore I report this as rpm problem.
>
> Does anybody have the same problem or can anybody tell me some
> workaround how I can remove those packages manually and possibly rebuild
> database without them?
>
> Thank you very much,
>
> Jan
>
>

If rpm is consuming a lot of cpu percentage in regular boot, have you
tried runlevel 1 or booting into rescue mode? Are the actions the same
with cpu usage?
There is an option to run rpm in rescue mode by issuing some parameter
to reference the root in terms where rpm from the rescue CD is used and
rpm removal/addition is performed in reference to /mnt/sysimage. I
believe it was used successfully when some had problems with i386 arch
packages were installed instead of the proper i686 rpms.

The documentation is scarce for rescue mode and rpm. I found RHL 7.2, 9
and RHEL4 The link is for RHEL4 which should be close to current
information anyway.

http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/sysadmin-guide/s1-rescuemode-boot.html

If the rescue mode link does not help, how are others who upgraded from
FC4 to FC5T3 systems reacting?

Rawhide after FC5T3 was released installs go backwards and replace later
version installed packages. I am wondering if this same personality for
the installer is effecting FC4 to FC5T3 upgrades also. Major libraries
were involved.

FC5T1 through rawhide, then to FC5T3 install disc bug. (not supported,
but may happen for FC4 or similar supported paths.

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=183153

Jim

--
Well fix that in the next (upgrade, update, patch release, service pack).

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