Am 26.07.2014 18:09, schrieb [email protected]: > Volker Armin Hemmann <[email protected]> [14-07-26 18:00]: >> Am 26.07.2014 14:16, schrieb [email protected]: >>> Volker Armin Hemmann <[email protected]> [14-07-26 14:08]: >>>> Am 26.07.2014 12:26, schrieb [email protected]: >>>>> Mick <[email protected]> [14-07-26 11:28]: >>>>>> On Saturday 26 Jul 2014 02:49:15 [email protected] wrote: >>>>>>> Hi, >>>>>>> >>>>>>> After running smartctl for an extended offline test I got >>>>>>> a badblock (information extracted from the report): >>>>>>> >>>>>>> SMART Self-test log structure revision number 1 >>>>>>> Num Test_Description Status Remaining >>>>>>> LifeTime(hours) >>>>>>> LBA_of_first_error # 1 Extended offline Completed: read failure >>>>>>> >>>>>>> 90% 14460 4288352511 197 Current_Pending_Sector 0x0032 >>>>>>> 200 >>>>>>> 200 000 Old_age Always - 1 >>>>>>> >>>>>>> I found a explanation to map the LBA to a partition here: >>>>>>> http://smartmontools.sourceforge.net/badblockhowto.html >>>>>>> >>>>>>> My partition layout is: >>>>>>> #> sudo fdisk -lu /dev/sda >>>>>>> >>>>>>> Disk /dev/sda: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors >>>>>>> Units: sectors of 1 * 512 = 512 bytes >>>>>>> Sector size (logical/physical): 512 bytes / 512 bytes >>>>>>> I/O size (minimum/optimal): 512 bytes / 512 bytes >>>>>>> Disklabel type: dos >>>>>>> Disk identifier: 0x07ec16a2 >>>>>>> >>>>>>> Device Boot Start End Blocks Id System >>>>>>> /dev/sda1 * 2048 104447 51200 83 Linux >>>>>>> /dev/sda2 104448 12687359 6291456 82 Linux swap / Solaris >>>>>>> /dev/sda3 12687360 222402559 104857600 83 Linux >>>>>>> /dev/sda4 222402560 1953525167 865561304 5 Extended >>>>>>> /dev/sda5 222404608 232890367 5242880 83 Linux >>>>>>> /dev/sda6 232892416 442607615 104857600 83 Linux >>>>>>> /dev/sda7 442609664 652324863 104857600 83 Linux >>>>>>> /dev/sda8 652326912 862042111 104857600 83 Linux >>>>>>> /dev/sda9 862044160 1071759359 104857600 83 Linux >>>>>>> /dev/sda10 1071761408 1281476607 104857600 83 Linux >>>>>>> /dev/sda11 1281478656 1491193855 104857600 83 Linux >>>>>>> /dev/sda12 1491195904 1953525167 231164632 83 Linux >>>>>>> 4288352511 <<< The number reported by smartctl >>>>>>> >>>>>>> >>>>>>> Following the linked document... >>>>>>> It seems the bad LBA is not on the checked harddisk. >>>>>>> >>>>>>> Or (more obvious) I did something wrong... >>>>>> You are probably comparing different units. The Start and End of fdisk >>>>>> are >>>>>> reporting sectors, each sector being 512 bytes. Therefore if the LBA is >>>>>> reported by smartctl in bytes, you have: >>>>>> >>>>>> 4,288,352,511 ÷ 512 = 8,375,688.5 >>>>>> >>>>>> which would place it within your swap partition. >>>>>> >>>>>> I would do this: >>>>>> >>>>>> swapoff /dev/sda2 >>>>>> >>>>>> dd if=/dev/zero of=/dev/sda2 bs=512 conv=notrunc >>>>>> >>>>>> mkswap -L swap -c /dev/sda2 >>>>>> >>>>>> swapon /dev/sda2 >>>>>> >>>>>> and hopefully the problem will be gone when you run the next smartctl >>>>>> test. >>>>>> >>>>>> -- >>>>>> Regards, >>>>>> Mick >>>>> Sorry for stuutering postings...overlocked this one: >>>>> #>dd if=/dev/zero of=/dev/sda2 bs=512 conv=notrunc >>>>> dd: error writing ‘/dev/sda2’: Input/output error >>>>> >>>>> Hrrrmpfff... >>>>> >>>>> Why does it nt remap those ones? >>>>> >>>>> Best regards, >>>>> mcc >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>> smartctl -a /dev/sda >>>> >>>> without those information: crystal ball. >>>> >>>> that said: it is swap. You shouldn't have to do anything. Don't touch dd. >>>> >>>> >>>> >> so you got one defective sector, the drive knows about it, it has 200 >> spares and will use one when the need arises. >> > > Unfortunaltely: No it doesnt. > > I did a dd (as reported previously) of zeroes accross the affected > partition and dd fails to write ot the sector in question (IO error). > > The selftest following again reports that sector as bad. > > So...? > > Best regards, > mcc > > > >
you can try hdparm's write-sector command to force a reallocation. But I would backup first. Just in case.
