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Am Sun, 26 Mar 2017 14:16:56 +0200 |
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schrieb Alan McKinnon <alan.mckinnon@×××××.com>: |
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> On 26/03/2017 14:14, tuxic@××××××.de wrote: |
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> > Hi, |
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> > |
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> > ok, seems that at least the data of one of the three partitions |
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> > of my sdcard is toasted... |
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> > |
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> > But it would be interesting to check, what the initial (?) reason |
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> > for that failure is: Hardware or logic -- sdcard or filesystem. |
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> |
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> that failure very seldom happens with spinning disks |
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> it very often happens with SDcards |
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> |
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> chances are *huge* that it's the card itself |
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> |
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> > |
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> > Is there any flash-memory-friendly and -aware checker out there, |
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> > which detects sectors which cannot be recovered back to |
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> > functioning? |
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> |
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> Not really, to my knowledge no-one has figured out a metric that |
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> shows increased odds of pending failure for SD cards. |
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> |
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> They just stop working one day. A lot like fuses actually - there's |
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> no way to examine a fuse and predict when it's likely to blow. |
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> |
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> Lesson to be learned: SD cards should only contain stuff you are |
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> happy to lose, or of which you have several backups |
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Many SD cards are optimized for FAT usage, thus they do wear leveling |
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only where FAT systems do most writes and rewrites: In the file |
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allocation table. Almost anything else works different. |
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Maybe better try f2fs as it more likely spreads writes evenly across |
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the SD card. |
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-- |
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Regards, |
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Kai |
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Replies to list-only preferred. |
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