Hi, I'm currently trying to move all services from my i386 home server to LinkSys NSLU2 ARM machines.
I was wondering if these NSLU2's could also take over my AFS cell when I noticed that there is no ARM port of OpenAFS available. So I was trying to find out how I could get this to work. I looked at the sources and added some ARM specific parts just similar to the other architecture specific stuff. No I'm at the following state: bosserver, vlserver, fileserver, volserver, ptserver can be compiled and are running (but untested if they really work, testing this would easier with a running openafs client). But the kernel module seems to be a little bit trickier: In order to compile I had to re-add the afs syscall to include/asm-arm/unistd.h. Then it compiles but when I modprobe it, it segfaults: Unable to handle kernel paging request at virtual address c25c7af8 pgd = c0964000 [c25c7af8] *pgd=00000000 Internal error: Oops: f5 [#1] Modules linked in: openafs af_packet ixp400_eth ixp400 usbhid ext3 jbd mbcache CPU: 0 pc : [<bf181ba0>] lr : [<bf19c078>] Tainted: PF sp : c0fbff00 ip : 000000dd fp : c0fbff30 r10: c0075918 r9 : c003b718 r8 : bf19c0f8 r7 : 00000000 r6 : 00001eb8 r5 : bf19c198 r4 : c01c7ae0 r3 : 00900006 r2 : 00000008 r1 : 00000000 r0 : ffffffff Flags: NzCv IRQs on FIQs on Mode SVC_32 Segment user Control: 397F Table: 00964000 DAC: 00000015 Process modprobe (pid: 1728, stack limit = 0xc0fbe198) Stack: (0xc0fbff00 to 0xc0fc0000) ff00: 00030000 c01c0000 c02074f0 bf19c0f8 c02074e0 00000000 c001ff24 c0fbe000 ff20: 00018fd4 c0fbff48 c0fbff34 bf181de4 bf181aa0 c02074f0 bf19c840 c0fbff68 ff40: c0fbff4c bf182554 bf181ce0 c02074f0 bf19c840 c02074e0 00000000 c0fbff80 ff60: c0fbff6c bf1ab01c bf18254c c02074f0 bf19c840 c0fbffa4 c0fbff84 c0054720 ff80: bf1ab00c 00000000 00000000 00019100 00000080 c001ff24 00000000 c0fbffa8 ffa0: c001fd80 c00545bc 00000000 00000000 40131000 0009e4de 00019958 00000000 ffc0: 00000000 00000000 00019100 000160b8 00018fc8 00000000 00018fd4 00016050 ffe0: 400d35e0 be81aac4 0000b338 400d35ec 60000010 40131000 00000000 00000021 Backtrace: Function entered at [<bf181a94>] from [<bf181de4>] Function entered at [<bf181cd4>] from [<bf182554>] r5 = BF19C840 r4 = C02074F0 Function entered at [<bf182540>] from [<bf1ab01c>] r7 = 00000000 r6 = C02074E0 r5 = BF19C840 r4 = C02074F0 Function entered at [<bf1ab000>] from [<c0054720>] r5 = BF19C840 r4 = C02074F0 Function entered at [<c00545b0>] from [<c001fd80>] r8 = C001FF24 r7 = 00000080 r6 = 00019100 r5 = 00000000 r4 = 00000000 Code: e89daff0 e5981008 e5953004 e0613003 (e7942103) There are several possible reasons: * I forgot to add some needed architecture specific stuff (I'm almost sure that this is the case anyway) My current patches are: http://algepop.net/slug/openafs-1.4.1-arm.diff (applies to the debian/unstable openafs_1.4.1-4 package) and http://algepop.net/slug/linux-2.6.16-afs-arm-syscall.diff Debian packages of the current state can also be found at http://algepop.net/slug/debian * Issues with compiling/cross-compiling: The kernel itself is cross-compiled, the openafs module is compiled natively on the NSLU2. At least I used in both cases a gcc-3.4. I'm using DebianSlug (http://www.nslu2-linux.org/wiki/DebianSlug/HomePage), and had to compile everything myself using OpenEmbedded (see http://www.nslu2-linux.org/wiki/DebianSlug/BuildDebianSlug) which sets up everything needed for cross-compilation and finally builds an uploadable firmware image. After finishing this initial setup you can use the NSLU2 (with DebianSlug) as an ordinary Debian (ARM) system - the firmware only acts as an "initrd" image wich finally boots the Debian installation from an USB disk. That means: only changing the kernel results in the need to make a new firmware image. So maybe first I have to rebuild my firmware image with the changed include/asm-arm/unistd.h file ... currently I changed only the headers during openafs module compilation. * problems with kernel 2.6.16? * ...? any other ideas? Albrecht -- // Albrecht Gebhardt Tel.: (++43 463) 2700/3118 // Institut fuer Mathematik Fax : (++43 463) 2700/3198 // Universitaet Klagenfurt mailto:[EMAIL PROTECTED] // Universitaetsstr. 65 http://www.math.uni-klu.ac.at/~agebhard // A-9020 Klagenfurt, Austria // GPG PK: http://www.math.uni-klu.ac.at/~agebhard/agebhard.asc // GPG FP: F46F 656E E83C 9323 CE30 FF8F 9DBA D1A3 B55A 78A6
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