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List:       smartmontools-support
Subject:    [smartmontools-support] Is sector number same in "smartctl -l
From:       "Oisin Feeley" <oisin.feeley () gmail ! com>
Date:       2007-01-14 18:49:24
Message-ID: e5f157b0701141049y57848a6bk29f5f1018cc30ce () mail ! gmail ! com
[Download RAW message or body]

Background:
/sbin/fdisk -lu /dev/sdb
Disk /dev/sdb: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders, total 312581808 sectors
Units = sectors of 1 * 512 = 512 bytes
   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *          63      208844      104391   83  Linux
/dev/sdb2          208845     4289354     2040255   82  Linux swap
/dev/sdb3         4289355   312576704   154143675   83  Linux

/sbin/tune2fs -l /dev/sdb3 | grep "Block size"
Block size:               4096

L = failing LBA sector = 6363055
S = start LBA sector = 4289355
B = block size = 4096
b = (int)(L-S) * 512/B = 259212.5

/var/log/messages
smartd[2921]: Device: /dev/sdb, 1 Currently unreadable (pending) sectors

"smartctl -a -d ata /dev/sdb"
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE
UPDATED  WHEN _FAILED RAW_VALUE
[snip]

197 Current_Pending_Sector  0x0012   100   100   000    Old_age
Always -       1

[snip]

Error 15 occurred at disk power-on lifetime: 4209 hours (175 days + 9 hours)
  When the command that caused the error occurred, the device was
active or idl e.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 04 af 17 61 e0  Error: UNC 4 sectors at LBA = 0x006117af = 6363055
[above repeated multiple times, no other failures reported]

[snip]
Num  Test_Description    Status                  Remaining
LifeTime(hours)  LB A_of_first_error
# 1  Short offline       Completed: read failure       90%      4210         -
# 2  Extended offline    Interrupted (host reset)      30%         1         -

Now, my question is, given that the LBA_of_first_error is missing due
to the interruption of the long selftest, can I just assume that it's
6363055 as reported above by the other parts of the log?

If I do assume that and then go ahead with the procedure described in
the badblocks-HOWTO then I get the following apparent problem:
# /sbin/debugfs
debugfs 1.35 (28-Feb-2004)
debugfs:  open /dev/sdb3
debugfs:  icheck 259212
Block   Inode number
259212  <block not found>

Any advice regarding what to do from here is gratefully received.

O.

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