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[Linux-cluster] Resource group corruption



I have a problem (again)...

Running FC3 in a cluster with only one node operative (but 2 nodes defined in the config).
Kernel is 2.6.11-1.14_FC3smp


I created 4 gfs file systems, and tested NFS and samba setups for a while. Now, I copied some larger amounts of data over to the file systems using rsync. Everything seemed normal until I stared movind directories around using mv and cp. Suddenly I got
May 18 09:54:27 bacchus kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000004
May 18 09:54:27 bacchus kernel: printing eip:
May 18 09:54:27 bacchus kernel: c018587d
May 18 09:54:27 bacchus kernel: *pde = 237dc001
May 18 09:54:27 bacchus kernel: Oops: 0000 [#1]
May 18 09:54:27 bacchus kernel: SMP
May 18 09:54:27 bacchus kernel: Modules linked in: lock_dlm(U) gfs(U) lock_harness(U) nfsd exportfs nfs lockd parport_pc lp parport autofs4 dlm(U) cman(U) md5 ipv6 sunrpc ipt_LOG iptable_filter ip_tables video button battery ac uhci_hcd ehci_hcd hw_random i2c_i801 i2c_core snd_intel8x0 snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc 3c59x mii tg3 floppy ext3 jbd dm_mod aic7xxx ata_piix libata sd_mod scsi_mod
May 18 09:54:27 bacchus kernel: CPU: 0
May 18 09:54:27 bacchus kernel: EIP: 0060:[<c018587d>] Tainted: GF VLIMay 18 09:54:27 bacchus kernel: EFLAGS: 00010246 (2.6.11-1.14_FC3smp)
May 18 09:54:27 bacchus kernel: EIP is at posix_acl_valid+0xf/0xac
May 18 09:54:27 bacchus kernel: eax: 00000000 ebx: 00000000 ecx: 00000008 edx: 00000001
May 18 09:54:27 bacchus kernel: esi: 00000000 edi: 00000000 ebp: e16a17e8 esp: ccf08d60
May 18 09:54:27 bacchus kernel: ds: 007b es: 007b ss: 0068
May 18 09:54:27 bacchus kernel: Process cp (pid: 17953, threadinfo=ccf08000 task=d2af5020)
May 18 09:54:27 bacchus kernel: Stack: 00000000 f911aebc 00000000 f90e9035 ccf08e0c f911aebc ccf08e64 f90f1d06
May 18 09:54:27 bacchus kernel: 00000000 00000000 ccf08db0 ccf08e53 e16a17e8 ccf08db0 ffffffff ccf08e0c
May 18 09:54:27 bacchus kernel: e16a17e8 ccf08db0 f90f389d ccf08db0 e2d4cf38 e2d4cf38 e2d4cf10 d2af5020
May 18 09:54:27 bacchus kernel: Call Trace:
May 18 09:54:27 bacchus kernel: [<f90e9035>] gfs_acl_validate_set+0x35/0xa2 [gfs]
May 18 09:54:27 bacchus kernel: [<f90f1d06>] system_eo_set+0xb6/0xdc [gfs]
May 18 09:54:27 bacchus kernel: [<f90f389d>] gfs_ea_set+0xbd/0xc1 [gfs]
May 18 09:54:27 bacchus kernel: [<f910eb5f>] gfs_setxattr+0x8a/0x96 [gfs]
May 18 09:54:27 bacchus kernel: [<c017a962>] setxattr+0x142/0x183
May 18 09:54:27 bacchus kernel: [<c0171cc4>] dput+0x7f/0x1d3
May 18 09:54:27 bacchus kernel: [<c016984b>] link_path_walk+0xbb5/0xe27
May 18 09:54:27 bacchus kernel: [<c016528a>] cp_new_stat64+0xf0/0x102
May 18 09:54:27 bacchus kernel: [<c0169d46>] path_lookup+0x96/0x196
May 18 09:54:27 bacchus kernel: [<c0169f98>] __user_walk+0x42/0x52
May 18 09:54:27 bacchus kernel: [<c017a9ea>] sys_setxattr+0x47/0x58
May 18 09:54:27 bacchus kernel: [<c0103f0f>] syscall_call+0x7/0xb
May 18 09:54:27 bacchus kernel: Code: c1 e9 02 f3 a5 f6 c3 02 74 02 66 a5 f6 c3 01 74 01 a4 c7 00 01 00 00 00 5b 5e 5f c3 57 8d 48 08 31 ff 56 31 f6 ba 01 00 00 00 53 <8b> 40 04 8d 1c c1 39 d9 73 32 0f b7 41 02 a9 f8 ff 00 00 75 27



Rebooting brings up the services again, including mounted file systems, but if I umount them (which involves disabling services and rebooting, as I get file system busy errors when rebooting, then stopping the services) and run gfs_fsck I get this on 3 of the 4 file systems:
# gfs_fsck /dev/raid5/pakke
Initializing fsck
Buffer #4296077767 (5 of 134571750) is neither GFS_METATYPE_RB nor GFS_METATYPE_ RG.
Resource group is corrupted.
Unable to read in rgrp descriptor.
Unable to fill in resource group information.


How do I try to fix this? Why is one file system unaffected by this? And most importantly: Why did this happen in the first place?

I am running the RHEL4 branch of the code.

The file systems were created with 2 journals, but there has never been more than one node connected to the storage.

--
birger




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