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On 03/09/13 10:45, meino.cramer@×××.de wrote: |
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> walt <w41ter@×××××.com> [13-09-03 04:15]: |
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>> On 09/02/2013 09:15 AM, meino.cramer@×××.de wrote: |
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>>> The rootfs and $HOME of my embedded system is stored |
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>>> on a 16GB SD-card (about 5GB used, rest free). The FS |
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>>> is ext4. |
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>>> |
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>>> Since the system hangs for unknown reasons several times |
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>> Does it hang at a predictable point, like during boot, or poweroff? |
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>> |
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>> I know almost nothing about SD cards (yet). Do they develop bad |
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>> blocks like other storage media? I notice fsck.ext4 has a -c flag |
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>> to check for bad blocks. |
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>> |
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> No, it hangs while compiling or while updateing (eix-sync; emerge ...). |
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> |
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> |
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> I did the following now: |
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> I did a binary image backup with dd of the sdcard. |
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> I made a backup of the all files from the bad fs with tar. |
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> I say "YES" to fsck to fix what it found. |
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> I made another backup of the all files from the bad fs with tar. |
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> I md5summed both tar archives and found them identical. |
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> |
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> Now...is the conclusion correct, that the identical md5sum |
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> indicate, that the fixed error of the fs only had impact to |
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> already invalidated data? |
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> Or whatelse could this indicate? |
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> |
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> Best regards, |
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> mcc |
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> |
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> PS: What come mind just in this moment: |
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> Can I ran fsck on an binary image of the fs which I made with dd somehow? |
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> |
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> |
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> |
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> |
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> |
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Have you run out of inodes? - ext 4 has had very mixed success for me on |
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solid state. Running out of inodes is a real problem for gentoo on |
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smaller SD cards with standard settings. |
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|
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BillK |
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