Mailinglist Archive: packet-writing (85 mails)

[Sergiy Kudryk <linux_ua@xxxxxxxxx>]

Hello

I can't get stable UDF writing results using IDE CDRW drive with SCSI emulation.

I plays with different mount options:

sync, async, atime, noatime, .. but no result.

Also tries enable/disable UDF write caching ..

Here is error messages from /var/log/messages:

Jan 27 20:37:55 my kernel: Ignoring read error on sector:49768
Jan 27 20:37:55 my kernel: Ignoring read error on sector:49772
Jan 27 20:37:55 my kernel: Ignoring read error on sector:49776
Jan 27 20:37:55 my kernel: Ignoring read error on sector:49780
Jan 27 20:37:55 my kernel: Ignoring read error on sector:49784
Jan 27 20:37:55 my kernel:  I/O error: dev 0b:00, sector 58352
Jan 27 20:37:55 my kernel:  I/O error: dev 0b:00, sector 58352
Jan 27 20:37:55 my kernel: Unable to handle kernel NULL pointer dereference at virtual address
00000034
Jan 27 20:37:55 my kernel:  printing eip:
Jan 27 20:37:55 my kernel: c0173c07
Jan 27 20:37:55 my kernel: *pde = 00000000
Jan 27 20:37:55 my kernel: Oops: 0000
Jan 27 20:37:55 my kernel: CPU:    0
Jan 27 20:37:55 my kernel: EIP:    0010:[udf_add_entry+2407/3044]    Not tainted
Jan 27 20:37:55 my kernel: EIP:    0010:[<c0173c07>]    Not tainted
Jan 27 20:37:55 my kernel: EFLAGS: 00010246
Jan 27 20:37:55 my kernel: eax: 00000000   ebx: c1ac2460   ecx: 000000d8   edx: 000000b0
Jan 27 20:37:55 my kernel: esi: c1ac2460   edi: c4811f50   ebp: c4811ec4   esp: c4811b48
Jan 27 20:37:55 my kernel: ds: 0018   es: 0018   ss: 0018
Jan 27 20:37:55 my kernel: Process kdeinit (pid: 1241, stackpage=c4811000)
Jan 27 20:37:55 my kernel: Stack: c1ac2460 cb9e67c0 c4811f50 c4811ba0 00000000 c4811ba4 c4811ba8
00000000
Jan 27 20:37:55 my kernel:        00000000 00000000 00000000 00000000 00000028 0000002c 00000000
00000000
Jan 27 20:37:55 my kernel:        00000000 ceee3000 00002f5c 00000054 00000000 00000000 00000000
00000000
Jan 27 20:37:55 my kernel: Call Trace: [udf_add_aext+1051/1248] [getblk+24/64] [bread+34/108]
[udf_tread+52/56] [udf_fileident_read+546/1016] Jan 27 20:37:55 my kernel: Call Trace:
[<c0171827>] [<c012fd3c>] [<c012ff2a>] [<c0179e9c>] [<c0179a3e>]
Jan 27 20:37:55 my kernel:    [getblk+24/64] [bread+34/108] [udf_find_entry+726/1204]
[udf_release_data+14/20] [udf_find_entry+1186/1204] [udf_bitmap_new_block+180/1676]
Jan 27 20:37:55 my kernel:    [<c012fd3c>] [<c012ff2a>] [<c0173002>] [<c017a56a>] [<c01731ce>]
[<c016be84>]
Jan 27 20:37:55 my kernel:    [udf_bitmap_new_block+1597/1676] [udf_get_pblock+109/128]
[udf_new_inode+612/652] [udf_mkdir+116/568] [cached_lookup+14/80] [vfs_mkdir+116/172]
Jan 27 20:37:55 my kernel:    [<c016c40d>] [<c0175b7d>] [<c016e278>] [<c0174214>] [<c01360a2>]
[<c0137584>]
Jan 27 20:37:55 my kernel:    [sys_mkdir+137/208] [system_call+51/64]
Jan 27 20:37:55 my kernel:    [<c0137645>] [<c0106d33>]
Jan 27 20:37:55 my kernel:
Jan 27 20:37:55 my kernel: Code: 8b 40 34 01 c2 89 95 c4 fc ff ff e9 52 01 00 00 8b 4d 10 89
Jan 27 20:37:55 my kernel:   I/O error: dev 0b:00, sector 49792
Jan 27 20:37:55 my kernel: Ignoring read error on sector:49792
Jan 27 20:37:55 my kernel: Ignoring read error on sector:49796
Jan 27 20:37:55 my kernel: Ignoring read error on sector:49800
Jan 27 20:37:55 my kernel: Ignoring read error on sector:49804
Jan 27 20:37:55 my kernel: Ignoring read error on sector:49808
Jan 27 20:37:55 my kernel: Ignoring read error on sector:49812
Jan 27 20:37:55 my kernel: Ignoring read error on sector:49816
Jan 27 20:37:55 my kernel: Ignoring read error on sector:49820
Jan 27 20:37:55 my kernel:  I/O error: dev 0b:00, sector 49828



 How achieve stable writing to CDRW disc ?
 Does anybody get good results with IDE CDRW drive ?

 I use kernel 2.4.17 with patch 2.4.18-pre4-2.


 Thanks.

 Regards,
 Sergiy Kudryk
 

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