Hmm, e2fsck didn't catch that? rec_len is the length of a directory entry, so after how many bytes the next entry follows. You can try to force e2fsck to do something about that: e2fsck -D
Cheers, Bernd On Friday, October 22, 2010, Wojciech Turek wrote: > Ok, removing and recreating the journal fixed that problem and I am able to > mount device as ldiskfs filesystem. Now I hit another wall when trying to > run ll_recover_lost_found_objs > When I first time run ll_recover_lost_found_objs -d /mnt/ost/lost+found it > only creates the O dir and exits. When I repeat this command again kernel > panics. Any idea what could be the problem here? > > > LDISKFS-fs error (device dm-4): ldiskfs_readdir: bad entry in directory > #6831: rec_len is smaller than minimal - offset=0, inode=0, rec_len=0, > name_len=0 > Aborting journal on device dm-4. > Unable to handle kernel NULL pointer dereference at 0000000000000000 RIP: > [<ffffffff88033448>] :jbd:journal_commit_transaction+0xc5b/0x12db > PGD 1a118d067 PUD 1ce7e7067 PMD 0 > Oops: 0002 [1] SMP > last sysfs file: /class/infiniband_mad/umad0/port > CPU 3 > Modules linked in: ldiskfs(U) crc16(U) autofs4(U) hidp(U) l2cap(U) > bluetooth(U) rdma_ucm(U) rdma_cm(U) iw_cm(U) ib_addr(U) ib_ipoib(U) > ipoib_helper(U) ib_cm(U) ipv6(U) xfrm_nalgo(U) crypto_api(U) ib_uverbs(U) > ib_umad(U) mlx4_vnic(U) mlx4_vnic_helper(U) ib_sa(U) ib_mthca(U) mptctl(U) > dm_mirror(U) video(U) backlight(U) sbs(U) power_meter(U) hwmon(U) i2c_ec(U) > i2c_core(U) dell_wmi(U) wmi(U) button(U) battery(U) asus_acpi(U) > acpi_memhotplug(U) ac(U) parport_pc(U) lp(U) parport(U) sr_mod(U) cdrom(U) > mlx4_ib(U) ib_mad(U) ib_core(U) joydev(U) mlx4_core(U) usb_storage(U) > pcspkr(U) shpchp(U) serio_raw(U) i5000_edac(U) edac_mc(U) dm_raid45(U) > dm_message(U) dm_region_hash(U) dm_log(U) dm_mod(U) dm_mem_cache(U) nfs(U) > lockd(U) fscache(U) nfs_acl(U) sunrpc(U) mptsas(U) mptscsih(U) mptbase(U) > scsi_transport_sas(U) mppVhba(U) megaraid_sas(U) mppUpper(U) sg(U) > sd_mod(U) scsi_mod(U) bnx2(U) ext3(U) jbd(U) uhci_hcd(U) ohci_hcd(U) > ehci_hcd(U) Pid: 11360, comm: kjournald Tainted: G > 2.6.18-194.3.1.el5_lustre.1.8.4 #1 > RIP: 0010:[<ffffffff88033448>] [<ffffffff88033448>] > > :jbd:journal_commit_transaction+0xc5b/0x12db > > RSP: 0018:ffff8101c6481d90 EFLAGS: 00010246 > RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00000000ffffffff > RDX: 0000000000000000 RSI: ffff8101e9dab0c0 RDI: ffff81022fa46000 > RBP: ffff81022fa46000 R08: ffff81022fa46068 R09: 0000000000000000 > R10: ffff810105925b20 R11: 00000000fffffffa R12: 0000000000000000 > R13: 0000000000000000 R14: ffff8101e9dab0c0 R15: 0000000000000000 > FS: 0000000000000000(0000) GS:ffff810107b9a4c0(0000) > knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b > CR2: 0000000000000000 CR3: 00000001eaffb000 CR4: 00000000000006e0 > Process kjournald (pid: 11360, threadinfo ffff8101c6480000, task > ffff81021c14c0c0) > Stack: ffff8101a61b9000 000000002b8263c0 ffffffff00000000 0000000000000000 > 0000113b00000001 0000000000000013 0000000000000000 0000000000000111 > 0000000000000000 0000000000000000 0000000001282dd7 00000000000020dd > Call Trace: > [<ffffffff8003da91>] lock_timer_base+0x1b/0x3c > [<ffffffff8004b347>] try_to_del_timer_sync+0x7f/0x88 > [<ffffffff88037386>] :jbd:kjournald+0xc1/0x213 > [<ffffffff800a0ab2>] autoremove_wake_function+0x0/0x2e > [<ffffffff800a089a>] keventd_create_kthread+0x0/0xc4 > [<ffffffff880372c5>] :jbd:kjournald+0x0/0x213 > [<ffffffff800a089a>] keventd_create_kthread+0x0/0xc4 > [<ffffffff80032890>] kthread+0xfe/0x132 > [<ffffffff8005dfb1>] child_rip+0xa/0x11 > [<ffffffff800a089a>] keventd_create_kthread+0x0/0xc4 > [<ffffffff8014bcf4>] deadline_queue_empty+0x0/0x23 > [<ffffffff80032792>] kthread+0x0/0x132 > [<ffffffff8005dfa7>] child_rip+0x0/0x11 > > > Code: f0 0f ba 33 01 e8 42 fc 02 f8 8b 03 a8 04 75 07 8b 43 58 85 > RIP [<ffffffff88033448>] :jbd:journal_commit_transaction+0xc5b/0x12db > RSP <ffff8101c6481d90> > CR2: 0000000000000000 > <0>Kernel panic - not syncing: Fatal exception > > On 22 October 2010 03:09, Andreas Dilger <[email protected]> wrote: > > On 2010-10-21, at 18:44, Wojciech Turek <[email protected]> wrote: > > > > fsck has finished and does not find any more errors to correct. However > > when I try to mount the device as ldiskfs kernel panics with following > > message: > > > > Assertion failure in cleanup_journal_tail() at fs/jbd/checkpoint.c:459: > > "blocknr != 0" > > > > > > Hmm, not sure, maybe your journal is broken? You can delete it with > > "tune2fs -O ^has_journal" (maybe after running e2fsck again to clear the > > journal), then re-create it with "tune2fs -j". > > > > ----------- [cut here ] --------- [please bite here ] --------- > > Kernel BUG at fs/jbd/checkpoint.c:459 > > invalid opcode: 0000 [1] SMP > > last sysfs file: /class/infiniband_mad/umad0/ > > port > > CPU 2 > > Modules linked in: obdfilter(U) fsfilt_ldiskfs(U) ost(U) mgc(U) > > ldiskfs(U) crc16(U) lustre(U) lov(U) mdc(U) lquota(U) osc(U) ksocklnd(U) > > ko2iblnd(U) ptlrpc(U) obdclass(U) lnet(U) lvfs(U) libcfs(U) autofs4(U) > > hidp(U) l2cap(U) bluetooth(U) rdma_ucm(U) rdma_cm(U) iw_cm(U) ib_addr(U) > > ib_ipoib(U) ipoib_helper(U) ib_cm(U) ipv6(U) xfrm_nalgo(U) crypto_api(U) > > ib_uverbs(U) ib_umad(U) mlx4_vnic(U) mlx4_vnic_helper(U) ib_sa(U) > > ib_mthca(U) mptctl(U) dm_mirror(U) video(U) backlight(U) sbs(U) > > power_meter(U) hwmon(U) i2c_ec(U) i2c_core(U) dell_wmi(U) wmi(U) > > button(U) battery(U) asus_acpi(U) acpi_memhotplug(U) ac(U) parport_pc(U) > > lp(U) parport(U) sr_mod(U) cdrom(U) mlx4_ib(U) ib_mad(U) ib_core(U) > > joydev(U) mlx4_core(U) usb_storage(U) shpchp(U) i5000_edac(U) edac_mc(U) > > serio_raw(U) pcspkr(U) dm_raid45(U) dm_message(U) dm_region_hash(U) > > dm_log(U) dm_mod(U) dm_mem_cache(U) nfs(U) lockd(U) fscache(U) > > nfs_acl(U) sunrpc(U) mptsas(U) mptscsih(U) mptbase(U) > > scsi_transport_sas(U) mppVhba(U) megaraid_sas(U) mppUpper(U) sg(U) > > sd_mod(U) scsi_mod(U) bnx2(U) ext3(U) jbd(U) uhci_hcd(U) ohci_hcd(U) > > ehci_hcd(U) Pid: 13891, comm: mount Tainted: G > > 2.6.18-194.3.1.el5_lustre.1.8.4 #1 RIP: 0010:[<ffffffff88034a95>] > > [<ffffffff88034a95>] > > > > :jbd:cleanup_journal_tail+0x9d/0x118 > > > > RSP: 0018:ffff81016f00da68 EFLAGS: 00010286 > > RAX: 000000000000005a RBX: ffff81012ca12c00 RCX: ffffffff80311da8 > > RDX: ffffffff80311da8 RSI: 0000000000000000 RDI: ffffffff80311da0 > > RBP: 0000000000000000 R08: ffffffff80311da8 R09: 0000000000000001 > > R10: 0000000000000000 R11: 0000000000000080 R12: 0000000000000002 > > R13: ffff81012ca12d4c R14: ffff81012ca12c24 R15: ffff81017a8d7400 > > FS: 00002abd7cef1f70(0000) GS:ffff810107b9acc0(0000) > > knlGS:0000000000000000 > > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > > CR2: 000000000042b000 CR3: 000000012813f000 CR4: 00000000000006e0 > > Process mount (pid: 13891, threadinfo ffff81016f00c000, task > > ffff81022e1b7820) > > Stack: 0000000000000000 ffff81012ca12c00 ffff81017a8d7400 > > ffffffff88037690 > > > > ffff81012ca12c00 ffff8102034ff000 ffff81017a8d7400 0000000000000000 > > ffff8102034ff000 ffffffff88a9be56 0000000001000000 ffff8101bf788000 > > > > Call Trace: > > [<ffffffff88037690>] :jbd:journal_flush+0xbe/0x248 > > [<ffffffff88a9be56>] :ldiskfs:ldiskfs_mark_recovery_complete+0x36/0x90 > > [<ffffffff88aa02e0>] :ldiskfs:ldiskfs_fill_super+0x1790/0x1950 > > [<ffffffff800eccd2>] get_filesystem+0x12/0x3b > > [<ffffffff800e343e>] test_bdev_super+0x0/0xd > > [<ffffffff88a9eb50>] :ldiskfs:ldiskfs_fill_super+0x0/0x1950 > > [<ffffffff800e43fd>] get_sb_bdev+0x10a/0x16c > > [<ffffffff800e3d9a>] vfs_kern_mount+0x93/0x11a > > [<ffffffff800e3e63>] do_kern_mount+0x36/0x4d > > [<ffffffff800ee601>] do_mount+0x6a9/0x719 > > [<ffffffff800090d2>] __handle_mm_fault+0x96f/0xfaa > > [<ffffffff8002c9e0>] mntput_no_expire+0x19/0x89 > > [<ffffffff8000a72a>] __link_path_walk+0xf1e/0xf42 > > [<ffffffff800220ce>] __up_read+0x19/0x7f > > [<ffffffff80066b88>] do_page_fault+0x4fe/0x874 > > [<ffffffff8002c9e0>] mntput_no_expire+0x19/0x89 > > [<ffffffff8000ea45>] link_path_walk+0xa6/0xb2 > > [<ffffffff800cc329>] zone_statistics+0x3e/0x6d > > [<ffffffff8000f2cf>] __alloc_pages+0x78/0x308 > > [<ffffffff8004c68e>] sys_mount+0x8a/0xcd > > [<ffffffff8005d28d>] tracesys+0xd5/0xe0 > > > > Code: 0f 0b 68 3a 94 03 88 c2 cb 01 44 39 a3 58 01 00 00 75 0e c7 > > RIP [<ffffffff88034a95>] :jbd:cleanup_journal_tail+0x9d/0x118 > > > > RSP <ffff81016f00da68> > > <0>Kernel panic - not syncing: Fatal exception > > > > Any idea how to fix this? > > > > Many thanks > > > > Wojciech > > > > > > On 21 October 2010 17:54, Wojciech Turek < <[email protected]> > > > > [email protected]> wrote: > >> Thanks Ken, that worked. > >> > >> > >> On 21 October 2010 17:39, Ken Hornstein < <[email protected]> > >> > >> [email protected]> wrote: > >>> >Now I have another problem. After last segfault I can not restart the > >>> > >>> fsck > >>> > >>> >due to MMP. > >>> >[...] > >>> >Also when I try to access filesystem via debugfs it fails: > >>> > > >>> >debugfs -c -R 'ls' /dev/scratch2_ost16vg/ost16lv > >>> >debugfs 1.41.10.sun2 (24-Feb-2010) > >>> >/dev/scratch2_ost16vg/ost16lv: MMP: fsck being run while opening > >>> > >>> filesystem > >>> > >>> >ls: Filesystem not open > >>> > > >>> >Is there a way to clear teh MMP flag so it allows fsck to run? > >>> > >>> You want tune2fs -f -E clear-mmp > >>> > >>> --Ken _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
