Re: [CentOS] yum hangs when Reading Local RPMDB
Kai Schaetzl [EMAIL PROTECTED] wrote: Before I do this without need I have a question: if the rpm db is corrupt shouldn't rpm -q or -qa stop working? Kai Not necessarily. A regular user can run rpm -q since it doesn't lock the database (your original posting showed rpm hanging on a FUTEX). I don't know rpm internals but I'd guess that simple queries for a specific package or even a listing of all packages don't go very deep into the rpm database. Also, since the database isn't being updated, there isn't any need to lock the database during the query. Cheers, Dave -- Politics, n. Strife of interests masquerading as a contest of principles. -- Ambrose Bierce ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] yum hangs when Reading Local RPMDB
Hi, I used to have exactly the same problem when the machine rebooted in the middle of an RPM installation or if the rpm process was killed -9. On Jan 9, 2008 7:41 PM, Kai Schaetzl [EMAIL PROTECTED] wrote: The process doesn't die, but doesn't seem to do anything from that point on. strace shows this: futex(0xb76dcae8, FUTEX_WAIT, 2, NULL ... How can I resolve this? I see that one suggestion is rm /var/lib/rpm/__db*. How do I rebuild it then? You can just remove the __db* files (if you're sure they're there because of an rpm interrupted process, check first if there are no rpm processes running). __db* are Berkeley DB's lockfiles and are used for transactions inside Berkeley DB. You don't need to rebuild anything, the RPM database is on the other files on that directory. Once you remove the locks you'll be able to access it normally. I found that cleaning the metadata doesn't remove the sqlite databases, so I removed these from /var/yum/cache as well. The rebuilt databases were different, but it didn't solve the problem. You don't have to clean /var/yum/cache since that's yum's cache and the problem you have is with rpm. Cleaning it, however, won't hurt you, you'll only have to download the RPM again. Hope it helps, Filipe ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] yum hangs when Reading Local RPMDB
Filipe Brandenburger wrote on Fri, 11 Jan 2008 10:35:16 -0500: You can just remove the __db* files (if you're sure they're there because of an rpm interrupted process, check first if there are no rpm processes running). __db* are Berkeley DB's lockfiles and are used for transactions inside Berkeley DB. You don't need to rebuild anything, the RPM database is on the other files on that directory. Once you remove the locks you'll be able to access it normally. Hm, the files are __db.001, __db.002 and __db.003 and range up to a size of over one MB, so they cannot be lockfiles. Yeah, maybe they are interim transaction files. After removing and doing an rpm query they are back there, in exactly the same size. I'd rather think they are indexes, there is no transaction necessary for a read query. Anyway, after removing and rebuilding them yum works! Thanks. Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: http://www.conactive.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] yum hangs when Reading Local RPMDB
Kai Schaetzl [EMAIL PROTECTED] wrote:
All of a sudden yum hangs on a Centos 4.5 (updated to the latest patch
before 4.6) when I try to use it. clean metadata didn't help.
The output of -d5 shows it gets to the point of Reading Local RPMDB and
then sits there. The process doesn't die, but doesn't seem to do anything
from that point on. strace shows this: futex(0xb76dcae8, FUTEX_WAIT, 2,
NULL
I remember that futex hangs have been mentioned in the past when doing
big updates from 4.x to 4.y, but this wasn't the case here.
python-2.3.4-14.4
python-sqlite-1.1.7-1.2.1
sqlite-3.3.6-2
yum-2.4.3-3.el4.centos
Kernel in use is not the latest 4.5 kernel, but one from 4.3. This
shouldn't matter in this case, shouldn't it?
How can I resolve this?
I see that one suggestion is rm /var/lib/rpm/__db*. How do I rebuild it
then?
I found that cleaning the metadata doesn't remove the sqlite databases, so
I removed these from /var/yum/cache as well. The rebuilt databases were
different, but it didn't solve the problem.
Kai
From the rpm man page:
REBUILD DATABASE OPTIONS
The general form of an rpm rebuild database command is
rpm {--initdb|--rebuilddb} [-v] [--dbpath DIRECTORY] [--root
DIRECTORY]
Use --initdb to create a new database, use --rebuilddb to rebuild
the database indices from the installed
package headers.
Remove the __db* files and then rpm --rebuilddb is usually sufficient
unless you have non-standard locations for the database.
Cheers,
Dave
--
Politics, n. Strife of interests masquerading as a contest of principles.
-- Ambrose Bierce
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Re: [CentOS] yum hangs when Reading Local RPMDB
Before I do this without need I have a question: if the rpm db is corrupt shouldn't rpm -q or -qa stop working? Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: http://www.conactive.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] yum hangs when Reading Local RPMDB
All of a sudden yum hangs on a Centos 4.5 (updated to the latest patch before 4.6) when I try to use it. clean metadata didn't help. The output of -d5 shows it gets to the point of Reading Local RPMDB and then sits there. The process doesn't die, but doesn't seem to do anything from that point on. strace shows this: futex(0xb76dcae8, FUTEX_WAIT, 2, NULL I remember that futex hangs have been mentioned in the past when doing big updates from 4.x to 4.y, but this wasn't the case here. python-2.3.4-14.4 python-sqlite-1.1.7-1.2.1 sqlite-3.3.6-2 yum-2.4.3-3.el4.centos Kernel in use is not the latest 4.5 kernel, but one from 4.3. This shouldn't matter in this case, shouldn't it? How can I resolve this? I see that one suggestion is rm /var/lib/rpm/__db*. How do I rebuild it then? I found that cleaning the metadata doesn't remove the sqlite databases, so I removed these from /var/yum/cache as well. The rebuilt databases were different, but it didn't solve the problem. Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: http://www.conactive.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
