On 29 Oct, Siddharth Aggarwal wrote: > > Another related question ... > > Is it possible to delay or queue up disk writes until I exit from my > function in the kernel (where I am trying to sync with the disk)? Or > make sure that my sync function never goes to sleep waiting for the disk > driver to signal completion of flushes to disk?
Take a look at how the snapshot code handles this. It has to be done above the level of individual disk operations because certain file system operations require multiple disk I/O operations to transform the file system from one consistent state to another consistent state. If you try to checkpoint in the middle of this sequence, you will capture a state where the file system is internally inconsistent. _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
