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Re: CRC error after power off
> On a slightly related note, is there a good way to force the
> filesystem to flush its contents? I want this so that I can either
> a) power down
> b) replace the filesystem image by cat'ing a new one to /dev/mtdblock/
> In case b, the integrity of the old filesystem doesn't matter, but
> preventing the old FS driver from overwriting something in the new
> image does.
You can just mount read only, or manually kill the garbage-collection
thread by sending it a SIGKILL). All actual writes are synchronous so they
won't be pending (assuming you're not on NAND).
If you replace the file system while it's live, I strongly recommend your
next command is 'reboot -f'. You won't be able to get it to remount at all.
Why can't you do that from your bootloader?
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