Re: [OpenAFS] OpenAFS crashes when using it on overlayfs

2016-10-06 Thread Volkmar Glauche
Hi Michael, I don't know what is going on in detail here. Since the kernel log says something about AFS cache scan before the crash, there might be some issue with your cache partition. If your overlay covers the entire client filesystem, does that include AFS cache as well? Would it be possible

Re: [OpenAFS] Start of afsd fails with "afsd: Error -1 in basic initialization."

2016-02-11 Thread Volkmar Glauche
Dear Kalle, if you want to use the OpenAFS client implementation, you will need the libafs kernel module from OpenAFS. It is not part of the Linux kernel sources, but most distributions including Ubuntu will build it for you. kafs and af_rxrpc implement an (incomplete?) in-kernel AFS

Re: [OpenAFS] Start of afsd fails with "afsd: Error -1 in basic initialization."

2016-02-11 Thread Volkmar Glauche
Dear Kalle, also: Zitat von Karl-Philipp Richter : ... There're no system packages installed and OpenAFS and kerberos (in case that matters) are installed from source (OpenAFS openafs-devel-1_5_76-4781-ged52d65) and `lsmod | grep afs` shows: Why aren't you using

Linux client performance - was Re: [OpenAFS] OpenAFS 1.6.5 Linux client cache sizes

2015-04-17 Thread Volkmar Glauche
Zitat von Volkmar Glauche volkmar.glau...@uniklinik-freiburg.de: Dear all, we are running OpenAFS clients with up to 1TB space available for cache partitions. These are multiuser cluster nodes where cache space should be as large as possible. Until now, there was (inadvertently) a limit of ~200GB set

Re: [OpenAFS] On desupporting Linux 2.4

2015-02-25 Thread Volkmar Glauche
Dear Ben, even the oldest machines in our lab are running Linux 3.x, so dropping Linux 2.4 support would not affect our business. Best, Volkmar Zitat von Benjamin Kaduk ka...@mit.edu: Hi all, Linux 2.4 is getting long in the tooth, and it is becoming clear that attempting to continue to

[OpenAFS] afsd (Linux 3.8.13, OpenAFS 1.6.5) crashes after reboot with reduced cache size

2015-02-20 Thread Volkmar Glauche
Dear all, to reduce RAM consumption on my AFS clients, I reduced the cache size from 2 blocks to 5000 by setting command line option -blocks. Initially, I did not clear the cache partition before rebooting the machine. After reboot, afsd seemed to hang during its initial

[OpenAFS] single OpenAFS cell and multiple/different kerberos realms

2015-01-27 Thread Volkmar Glauche
Dear all, I've got a working setup for single cell/single realm OpenAFS and kerberos for cell a.com/realm A.COM. klist -e -f Ticket cache: FILE:/tmp/krb5cc_606_c9Pb3J Default principal: vglau...@a.com Valid starting Expires Service principal 27.01.2015 14:15:17

[OpenAFS] OpenAFS 1.6.5 Linux client cache sizes

2015-01-08 Thread Volkmar Glauche
Dear all, we are running OpenAFS clients with up to 1TB space available for cache partitions. These are multiuser cluster nodes where cache space should be as large as possible. Until now, there was (inadvertently) a limit of ~200GB set to the cache size by restrictive afsd options. I now

Re: [OpenAFS] Export nfs file system with afs

2014-12-11 Thread Volkmar Glauche
Dear Christian, neither a native nor an somehow mounted /home can be directly exported using AFS. The AFS file server stores volumes and corresponding folders and files on its /vicepX partitions in an internal format which does not allow re-exporting local or foreign file systems through

Re: [OpenAFS] Re: OpenAFS 1.6.5/1.6.10 - server segfaults during migration to rxkad-k5

2014-11-11 Thread Volkmar Glauche
2014 14:24:49 +0100 Volkmar Glauche volkmar.glau...@uniklinik-freiburg.de wrote: I've never used kaserver/kerberos4, but maybe I followed installation guidelines that still had kaserver in mind and proposed kvno=0. Would bumping the kvno affect existing tokens/Keyfiles that are still

Re: [OpenAFS] OpenAFS 1.6.5/1.6.10 - server segfaults during migration to rxkad-k5

2014-11-10 Thread Volkmar Glauche
Zitat von Benjamin Kaduk ka...@mit.edu: On Fri, 7 Nov 2014, Volkmar Glauche wrote: mit-krb5# ktutil ktutil: rkt /etc/openafs/server/rxkad.keytab ktutil: l slot KVNO Principal - 10 afs/cell@REALM 20

Re: [OpenAFS] OpenAFS 1.6.5/1.6.10 - server segfaults during migration to rxkad-k5

2014-11-07 Thread Volkmar Glauche
, Volkmar Am 06.11.2014 um 13:56 schrieb Volkmar Glauche: Dear all, I have started migrating our AFS cell (OpenAFS 1.6.5) to use rxkad-k5 following the instructions in http://www.openafs.org/pages/security/install-rxkad-k5-1.6.txt and http://www.openafs.org/pages/security/how-to-rekey.txt. After

[OpenAFS] OpenAFS 1.6.5/1.6.10 - server segfaults during migration to rxkad-k5

2014-11-06 Thread Volkmar Glauche
Dear all, I have started migrating our AFS cell (OpenAFS 1.6.5) to use rxkad-k5 following the instructions in http://www.openafs.org/pages/security/install-rxkad-k5-1.6.txt and http://www.openafs.org/pages/security/how-to-rekey.txt. After installing the rxkad.keytab everything seemed to

Re: [OpenAFS] stackable file system above OpenAFS

2014-09-19 Thread Volkmar Glauche
Dear Erik, if you don't find a good overlay solution, I'd recommend looking at some tools that prepare (i.e. partition, mount, pre-populate if necessary) local disks during boot. We use oneSIS (http://www.onesis.org/) and are quite happy with this solution. It is a feature-rich tool, but still

Re: [OpenAFS] Re: vos move operation stalls

2014-04-10 Thread Volkmar Glauche
a warning at mount time that the log section of the filesystem might be too small. Increasing the log section size during filesystem creation to 3200 blocks seems to solve the problem. Best, Volkmar Am 25.03.2014 17:05, schrieb Andrew Deason: On Mon, 24 Mar 2014 13:47:33 +0100 Volkmar Glauche

[OpenAFS] vos move operation stalls

2014-03-24 Thread Volkmar Glauche
Dear list, I have installed a new fileserver, running Gentoo Linux, kernel 3.8.13, OpenAFS 1.6.5 (also tried 1.6.6). The server has two /vicep partitions, each with an XFS filesystem: * ~800GB /vicepa on the system disk - mdadm mirror with two SATA disks * 24TB /vicepb on an external RAID system,