3.x-4.x bad blocks detection bug?

Solaris · Sat May 01, 2010 6:52 am

This goes after i detected 4 bad-blocks on my brand new 450G(3 days!),i've tried to :

Format Nand->NetInstall RouterOS 3.3->Detected 4 Bad Blocks Persist
Without Format Nand->NetInstall RouterOS 3.3->Detected 4 Bad Blocks Persist
Format Nand->NetInstall RouterOS 4.8->Detected 4 Bad Blocks Persist
Without Format Nand->NetInstall RouterOS 4.8->Detected 4 Bad Blocks Persist
Format Nand->NetInstall RouterOS 4.9->Detected 4 Bad Blocks Persist
Without Format Nand->NetInstall RouterOS 4.9->Detected 4 Bad Blocks Persist

Sample 4.9 Output :

         uptime: 36s
                  version: "4.9"
              free-memory: 246160kB
             total-memory: 257356kB
                      cpu: "MIPS 24K V7.4"
                cpu-count: 1
            cpu-frequency: 680MHz
                 cpu-load: 2
           free-hdd-space: 482072kB
          total-hdd-space: 520192kB
  write-sect-since-reboot: 406
         write-sect-total: 4466
               [b]bad-blocks: 4[/b]
        architecture-name: "mipsbe"
               board-name: "RB450G"
                 platform: "MikroTik"

Those is what i've done to narrow down near good solution to reduce bad blocks,why i said it's a bug between 3.x-4.x RouterOS?,because it come differently on 5.0beta2,it's really 0!

      uptime: 41s
                  version: "5.0beta2"
              free-memory: 245212kB
             total-memory: 256760kB
                      cpu: "MIPS 24Kc V7.4"
                cpu-count: 1
            cpu-frequency: 680MHz
                 cpu-load: 15
           free-hdd-space: 485876kB
          total-hdd-space: 520192kB
  write-sect-since-reboot: 0
         write-sect-total: 4692
               [b]bad-blocks: 0[/b]
        architecture-name: "mipsbe"
               board-name: "RB450G"
                 platform: "MikroTik"

I don't know if Bad-Block detection/management already completed on 5.0beta2,but this bad block really quite irritated me as in my places it's really hard to find stable electricity output and constant electricity blackout overtime

,i just don't want for long term i need to invest another one.

cwarky · Sat May 01, 2010 8:27 pm

You shouldn't worry about those 4 bad blocks. However i have noticed that bug on ROS5.0beta 1 and 2 on my RB750G too. The bad block counter goes to 0 without netinstall and there's another thing that i've noticed : write-sect-total counter doesn't increase also. Waiting for an official comment on this.

Best regards

Mon May 03, 2010 10:33 am

even 99 bad blocks doesn't affect anything in your RB450 (or any other RB). RouterOS is smart enough to ignore them, and that is such a small number of data that you won't feel difference in storage also .

Solaris · Tue May 04, 2010 8:09 am

roger that comrade

3.x-4.x bad blocks detection bug?

3.x-4.x bad blocks detection bug?

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