Hey, all. I've tried repeatedly to get an 800 GB sparse file on a 1 TB btrfs partition to work as an iSCSI target... and I can run fdisk on it (and see the iSCSI disk just fine), but when I try to create a partition and exit, it OOPSes every time. Ubuntu, kernel 2.6.31-13-generic is the latest I've tried. Is this a known bug? I've tried Googling to no avail. If there's anything I can do to help troubleshoot, please let me know. Thanks! -Ken P.S. FYI, tried the same thing on a reiserfs partition on the same system, worked fine. ----------------------------- dmesg dump ------------------------------- [ 6310.208547] Loading iSCSI transport class v2.0-870. [ 6310.229328] iscsi: registered transport (tcp) [ 6310.273236] iscsi: registered transport (iser) [ 6310.552757] scsi4 : iSCSI Initiator over TCP/IP [ 6310.812801] scsi 4:0:0:0: Direct-Access IET VIRTUAL-DISK 0 PQ: 0 ANSI: 4 [ 6310.812950] sd 4:0:0:0: Attached scsi generic sg3 type 0 [ 6310.817523] sd 4:0:0:0: [sdc] 1572864000 512-byte logical blocks: (805 GB/750 GiB) [ 6310.817743] sd 4:0:0:0: [sdc] Write Protect is off [ 6310.817748] sd 4:0:0:0: [sdc] Mode Sense: 77 00 00 08 [ 6310.817883] sd 4:0:0:0: [sdc] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA [ 6310.819622] sdc: unknown partition table [ 6310.822547] sd 4:0:0:0: [sdc] Attached SCSI disk [ 6524.480833] BUG: unable to handle kernel NULL pointer dereference at (null) [ 6524.480840] IP: [<(null)>] (null) [ 6524.480843] *pde = 00000000 [ 6524.480846] Oops: 0000 [#1] SMP [ 6524.480849] last sysfs file: /sys/kernel/uevent_seqnum [ 6524.480852] Modules linked in: ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi iscsi_trgt nfsd exportfs nfs lockd nfs_acl auth_rpcgss sunrpc btrfs zlib_deflate crc32c libcrc32c snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_usb_audio snd_pcm_oss snd_mixer_oss snd_pcm snd_usb_lib snd_hwdep snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd snd_page_alloc lp ppdev psmouse soundcore parport_pc parport serio_raw binfmt_misc reiserfs raid10 raid456 raid6_pq async_xor async_memcpy async_tx xor raid1 raid0 multipath linear fbcon tileblit font bitblit softcursor usbhid floppy tg3 i915 drm i2c_algo_bit video output intel_agp agpgart [last unloaded: scsi_transport_iscsi] [ 6524.480917] [ 6524.480920] Pid: 2541, comm: istiod1 Not tainted (2.6.31-13-generic #43-Ubuntu) HP Compaq dc5700 Small Form Factor [ 6524.480923] EIP: 0060:[<00000000>] EFLAGS: 00010282 CPU: 0 [ 6524.480928] EIP is at 0x0 [ 6524.480930] EAX: f417be18 EBX: f964b660 ECX: 00000001 EDX: f417be9c [ 6524.480932] ESI: f4082380 EDI: f417be18 EBP: f417beb0 ESP: f417be0c [ 6524.480935] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [ 6524.480937] Process istiod1 (pid: 2541, ti=f417a000 task=f65e7110 task.ti=f417a000) [ 6524.480939] Stack: [ 6524.480941] c01e28dc 00000000 00000000 00000000 00000400 00000000 00000001 ffffffff [ 6524.480947] <0> f4082380 00000000 00000000 00000000 00000000 f65e7110 00000000 00000000 [ 6524.480954] <0> f65e7110 f65e7110 c0157970 f417be58 f417be58 00000000 00000000 f65e713c [ 6524.480962] Call Trace: [ 6524.480969] [<c01e28dc>] ? do_sync_write+0xbc/0x100 [ 6524.480974] [<c0157970>] ? autoremove_wake_function+0x0/0x40 [ 6524.480983] [<fb3d7e8a>] ? fileio_make_request+0x11a/0x200 [iscsi_trgt] [ 6524.480990] [<fb3d7d70>] ? fileio_make_request+0x0/0x200 [iscsi_trgt] [ 6524.480997] [<fb3d011b>] ? tio_write+0x1b/0x60 [iscsi_trgt] [ 6524.481001] [<c0133797>] ? finish_task_switch+0x57/0xe0 [ 6524.481008] [<fb3d8a41>] ? build_write_response+0x31/0xc0 [iscsi_trgt] [ 6524.481012] [<c056962c>] ? schedule+0x40c/0x730 [ 6524.481018] [<fb3d36c3>] ? send_scsi_rsp+0x13/0xd0 [iscsi_trgt] [ 6524.481025] [<fb3d8944>] ? disk_execute_cmnd+0x194/0x1c0 [iscsi_trgt] [ 6524.481031] [<fb3d4e1e>] ? worker_thread+0xbe/0x1b0 [iscsi_trgt] [ 6524.481035] [<c0137ca0>] ? default_wake_function+0x0/0x10 [ 6524.481040] [<fb3d4d60>] ? worker_thread+0x0/0x1b0 [iscsi_trgt] [ 6524.481043] [<c015767c>] ? kthread+0x7c/0x90 [ 6524.481046] [<c0157600>] ? kthread+0x0/0x90 [ 6524.481050] [<c0103f17>] ? kernel_thread_helper+0x7/0x10 [ 6524.481052] Code: Bad EIP value. [ 6524.481056] EIP: [<00000000>] 0x0 SS:ESP 0068:f417be0c [ 6524.481066] CR2: 0000000000000000 [ 6524.481069] ---[ end trace 3e23029014423010 ]--- [ 6617.000088] iscsi_trgt: cmnd_abort(1149) 5c000000 1 0 42 4096 0 0 [ 6617.000093] iscsi_trgt: Abort Task (01) issued on tid:1 lun:0 by sid:281474997486080 (Unknown Task) [ 6617.000139] iscsi_trgt: Logical Unit Reset (05) issued on tid:1 lun:0 by sid:281474997486080 (Function Complete) [ 6617.000200] BUG: unable to handle kernel NULL pointer dereference at (null) [ 6617.000205] IP: [<(null)>] (null) [ 6617.000208] *pde = be212067 [ 6617.000211] Oops: 0000 [#2] SMP [ 6617.000214] last sysfs file: /sys/kernel/uevent_seqnum [ 6617.000217] Modules linked in: ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi iscsi_trgt nfsd exportfs nfs lockd nfs_acl auth_rpcgss sunrpc btrfs zlib_deflate crc32c libcrc32c snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_usb_audio snd_pcm_oss snd_mixer_oss snd_pcm snd_usb_lib snd_hwdep snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd snd_page_alloc lp ppdev psmouse soundcore parport_pc parport serio_raw binfmt_misc reiserfs raid10 raid456 raid6_pq async_xor async_memcpy async_tx xor raid1 raid0 multipath linear fbcon tileblit font bitblit softcursor usbhid floppy tg3 i915 drm i2c_algo_bit video output intel_agp agpgart [last unloaded: scsi_transport_iscsi] [ 6617.000280] [ 6617.000283] Pid: 2540, comm: istd1 Tainted: G D (2.6.31-13-generic #43-Ubuntu) HP Compaq dc5700 Small Form Factor [ 6617.000286] EIP: 0060:[<00000000>] EFLAGS: 00010083 CPU: 0 [ 6617.000290] EIP is at 0x0 [ 6617.000292] EAX: f417bf98 EBX: f417bf98 ECX: 00000000 EDX: 00000003 [ 6617.000295] ESI: fffffff4 EDI: 00000000 EBP: f4179e48 ESP: f4179e28 [ 6617.000297] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [ 6617.000299] Process istd1 (pid: 2540, ti=f4178000 task=f57ab240 task.ti=f4178000) [ 6617.000301] Stack: [ 6617.000303] c0129f90 00000000 00000001 00000003 f40683dc f40683d8 00000003 00000296 [ 6617.000309] <0> f4179e68 c012e777 00000000 00000000 00000001 f58157e0 f40683c0 00000033 [ 6617.000316] <0> f4179ea8 fb3d4fb3 00000000 f57ab26c c283d3e0 a3f18fc2 f4179ec0 c0136c0d [ 6617.000324] Call Trace: [ 6617.000330] [<c0129f90>] ? __wake_up_common+0x40/0x70 [ 6617.000335] [<c012e777>] ? __wake_up+0x37/0x50 [ 6617.000344] [<fb3d4fb3>] ? wthread_queue+0x63/0x130 [iscsi_trgt] [ 6617.000348] [<c0136c0d>] ? update_curr+0x21d/0x230 [ 6617.000354] [<fb3d1237>] ? iscsi_scsi_queuecmnd+0xe7/0xf0 [iscsi_trgt] [ 6617.000360] [<fb3d243d>] ? scsi_cmnd_exec+0x2d/0x70 [iscsi_trgt] [ 6617.000365] [<fb3d2a7f>] ? iscsi_cmnd_exec+0x7f/0x100 [iscsi_trgt] [ 6617.000371] [<fb3d0d5a>] ? cmnd_insert_hash+0xaa/0x120 [iscsi_trgt] [ 6617.000377] [<fb3d2bc0>] ? iscsi_session_push_cmnd+0xc0/0x1a0 [iscsi_trgt] [ 6617.000382] [<fb3d2d59>] ? cmnd_rx_end+0xb9/0x100 [iscsi_trgt] [ 6617.000386] [<c0137a47>] ? try_to_wake_up+0xf7/0x350 [ 6617.000390] [<c056b731>] ? _spin_unlock_bh+0x11/0x20 [ 6617.000396] [<fb3d4859>] ? recv+0x209/0x430 [iscsi_trgt] [ 6617.000400] [<c056b48a>] ? _spin_lock_irqsave+0x2a/0x40 [ 6617.000405] [<fb3d4b38>] ? istd+0xb8/0x1c0 [iscsi_trgt] [ 6617.000411] [<fb3d4a80>] ? istd+0x0/0x1c0 [iscsi_trgt] [ 6617.000415] [<c015767c>] ? kthread+0x7c/0x90 [ 6617.000417] [<c0157600>] ? kthread+0x0/0x90 [ 6617.000421] [<c0103f17>] ? kernel_thread_helper+0x7/0x10 [ 6617.000423] Code: Bad EIP value. [ 6617.000427] EIP: [<00000000>] 0x0 SS:ESP 0068:f4179e28 [ 6617.000437] CR2: 0000000000000000 [ 6617.000440] ---[ end trace 3e23029014423011 ]--- -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
