4KiB pagesize and UBIFS

Thu Aug 6 05:33:03 EDT 2009

On Tue, Aug 4, 2009 at 5:41 PM, Adrian Hunter<adrian.hunter at nokia.com> wrote:
> ext Kyungmin Park wrote:
>>
>> Hi,
>>
>> I create the empty ubifs as datafs and then try to mount it
>> Of course I turn on all debug message at ubifs.
>>
>> As below it try to read unaligned read (not seen at here, driver
>> handle it) and linefetch error finally.
>>
>> I guest 4KiB pagesize don't support on ubifs.
>>
>> How can I handle it?
>>
>> Thank you,
>> Kyungmin Park
>>
>> # mount -t ubifs ubi0!datafs /mnt
>> [   12.400000] UBIFS DBG (pid 1039): ubifs_get_sb: name ubi0!datafs, flags
>> 0x800
>> 0
>> [   12.410000] UBIFS DBG (pid 1039): ubifs_get_sb: opened ubi0_20
>> [   12.410000] UBIFS DBG (pid 1039): ubifs_read_node: LEB 0:0, superblock
>> node,
>> length 4096
>> [   12.420000] UBIFS DBG (pid 1039): ubifs_start_scan: scan LEB 1:0
>> [   12.430000] UBIFS DBG (pid 1040): ubifs_bg_thread: background thread
>> "ubifs_b
>> gt0_20" started, PID 1040
>> [   12.470000] UBIFS DBG (pid 1039): ubifs_scan: look at LEB 1:0 (253952
>> bytes l
>> eft)
>> [   12.470000] UBIFS DBG (pid 1039): ubifs_scan_a_node: scanning master
>> node
>> [   12.480000] UBIFS DBG (pid 1039): ubifs_scan: look at LEB 1:512 (253440
>> bytes
>>  left)
>> [   12.490000] UBIFS DBG (pid 1039): ubifs_scan_a_node: scanning padding
>> node
>> [   12.490000] UBIFS DBG (pid 1039): ubifs_scan_a_node: 3556 bytes padded,
>> offse
>> t now 4096
>> [   12.500000] UBIFS DBG (pid 1039): ubifs_scan: look at LEB 1:4096
>> (249856 byte
>> s left)
>> [   12.510000] UBIFS DBG (pid 1039): ubifs_scan_a_node: scanning master
>> node
>> [   12.520000] UBIFS DBG (pid 1039): ubifs_scan: look at LEB 1:4608
>> (249344 byte
>> s left)
>> [   12.520000] UBIFS DBG (pid 1039): ubifs_scan_a_node: scanning padding
>> node
>> [   12.530000] UBIFS DBG (pid 1039): ubifs_scan_a_node: 3556 bytes padded,
>> offse
>> t now 8192
>> [   12.540000] UBIFS DBG (pid 1039): ubifs_scan: look at LEB 1:8192
>> (245760 byte
>> s left)
>> [   12.550000] UBIFS DBG (pid 1039): ubifs_scan_a_node: hit empty space
>> [   12.550000] UBIFS DBG (pid 1039): ubifs_end_scan: stop scanning LEB 1
>> at offs
>> et 8192
>> [   12.560000] UBIFS DBG (pid 1039): ubifs_start_scan: scan LEB 2:0
>> [   12.600000] UBIFS DBG (pid 1039): ubifs_scan: look at LEB 2:0 (253952
>> bytes l
>> eft)
>> [   12.600000] UBIFS DBG (pid 1039): ubifs_scan_a_node: scanning master
>> node
>> [   12.610000] UBIFS DBG (pid 1039): ubifs_scan: look at LEB 2:512 (253440
>> bytes
>>  left)
>> [   12.620000] UBIFS DBG (pid 1039): ubifs_scan_a_node: scanning padding
>> node
>> [   12.620000] UBIFS DBG (pid 1039): ubifs_scan_a_node: 3556 bytes padded,
>> offse
>> t now 4096
>> [   12.630000] UBIFS DBG (pid 1039): ubifs_scan: look at LEB 2:4096
>> (249856 byte
>> s left)
>> [   12.640000] UBIFS DBG (pid 1039): ubifs_scan_a_node: scanning master
>> node
>> [   12.650000] UBIFS DBG (pid 1039): ubifs_scan: look at LEB 2:4608
>> (249344 byte
>> s left)
>> [   12.650000] UBIFS DBG (pid 1039): ubifs_scan_a_node: scanning padding
>> node
>> [   12.660000] UBIFS DBG (pid 1039): ubifs_scan_a_node: 3556 bytes padded,
>> offse
>> t now 8192
>> [   12.670000] UBIFS DBG (pid 1039): ubifs_scan: look at LEB 2:8192
>> (245760 byte
>> s left)
>> [   12.680000] UBIFS DBG (pid 1039): ubifs_scan_a_node: hit empty space
>> [   12.680000] UBIFS DBG (pid 1039): ubifs_end_scan: stop scanning LEB 2
>> at offs
>> et 8192
>> [   12.690000] UBIFS DBG (pid 1039): ubifs_read_node: LEB 12:0, indexing
>> node, l
>> ength 48
>> [   12.700000] UBIFS: recovery needed
>> [   12.700000] UBIFS DBG (pid 1039): ubifs_recover_inl_heads: checking
>> index hea
>> d at 12:4096
>> [   12.710000] UBIFS DBG (pid 1039): ubifs_recover_inl_heads: checking LPT
>> head
>> at 7:4096
>> [   12.720000] UBIFS DBG (pid 1039): lpt_init_rd: space_bits 15
>> [   12.730000] UBIFS DBG (pid 1039): lpt_init_rd: lpt_lnum_bits 2
>> [   12.730000] UBIFS DBG (pid 1039): lpt_init_rd: lpt_offs_bits 18
>> [   12.740000] UBIFS DBG (pid 1039): lpt_init_rd: lpt_spc_bits 18
>> [   12.750000] UBIFS DBG (pid 1039): lpt_init_rd: pcnt_bits 10
>> [   12.750000] UBIFS DBG (pid 1039): lpt_init_rd: lnum_bits 12
>> [   12.760000] UBIFS DBG (pid 1039): lpt_init_rd: pnode_sz 18
>> [   12.760000] UBIFS DBG (pid 1039): lpt_init_rd: nnode_sz 13
>> [   12.770000] UBIFS DBG (pid 1039): lpt_init_rd: ltab_sz 12
>> [   12.770000] UBIFS DBG (pid 1039): lpt_init_rd: lsave_sz 387
>> [   12.780000] UBIFS DBG (pid 1039): lpt_init_rd: lsave_cnt 256
>> [   12.790000] UBIFS DBG (pid 1039): lpt_init_rd: lpt_hght 5
>> [   12.790000] UBIFS DBG (pid 1039): lpt_init_rd: big_lpt 0
>> [   12.800000] UBIFS DBG (pid 1039): lpt_init_rd: LPT root is at 7:70
>> [   12.800000] UBIFS DBG (pid 1039): lpt_init_rd: LPT head is at 7:4096
>> [   12.810000] UBIFS DBG (pid 1039): lpt_init_rd: LPT ltab is at 7:83
>> [   12.810000] UBIFS DBG (pid 1039): ubifs_read_node: LEB 12:0, indexing
>> node, l
>> ength 48
>> [   12.820000] UBIFS DBG (pid 1039): read_znode: LEB 12:0, level 0, 1
>> branch
>> [   12.830000] UBIFS DBG (pid 1039): ubifs_add_lpt_dirt: LEB 7 add 13 to
>> 4001
>> [   12.840000] UBIFS DBG (pid 1039): ubifs_add_lpt_dirt: LEB 7 add 12 to
>> 4014
>> [   12.850000] UBIFS DBG (pid 1039): ubifs_add_lpt_dirt: LEB 7 add 13 to
>> 4026
>> [   12.860000] UBIFS DBG (pid 1039): ubifs_add_lpt_dirt: LEB 7 add 13 to
>> 4039
>> [   12.870000] UBIFS DBG (pid 1039): ubifs_add_lpt_dirt: LEB 7 add 13 to
>> 4052
>> [   12.870000] UBIFS DBG (pid 1039): ubifs_add_lpt_dirt: LEB 7 add 13 to
>> 4065
>> [   12.880000] Unhandled fault: external abort on non-linefetch (0x1008)
>> at 0xc5
>> 880410
>> [   12.890000] Internal error: : 1008 [#1]
>> [   12.890000] Modules linked in:
>> [   12.890000] CPU: 0    Not tainted  (2.6.31-rc4-g6a8aab3-dirty #768)
>> [   12.890000] PC is at memcpy+0xc4/0x330
>> [   12.890000] LR is at 0xf80103f5
>> [   12.890000] pc : [<c01610e4>]    lr : [<f80103f5>]    psr: 60000013
>> [   12.890000] sp : c43e9acc  ip : 00000010  fp : 00000000
>> [   12.890000] r10: c5880400  r9 : c4058da8  r8 : c41736a0
>> [   12.890000] r7 : c41736a0  r6 : 00000012  r5 : 00000000  r4 : 00000000
>> [   12.890000] r3 : c5880400  r2 : 00000000  r1 : c5880410  r0 : c41736b0
>> [   12.890000] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM
>>  Segment user
>> [   12.890000] Control: 10c5387d  Table: 244a4019  DAC: 00000015
>> [   12.890000] Process mount (pid: 1039, stack limit = 0xc43e82e8)
>>
>
> I do not understand why you think this is UBIFS.

Right, UBIFS is working, I check it.
>
> "external abort on non-linefetch" is a bus error.

Right, s5pc110 has some strange. it occurs bus error even though it's
right access. umm why?

>
> "PC is at memcpy" means it was caused by memcpy.
>
> Have you tried running drivers/mtd/tests/mtd_stresstest for a day?

Passed. I confirmed it's working.

Thank you,
Kyungmin Park