2009/10/30 Eric Sandeen <sandeen@xxxxxxxxxx>: > Alexey Fisher wrote: >> Hmm... bdev. any chance to do temporary recovery and load it as external >> journal if ro used? Anyway, you already pointed me to hdparm, so i can >> use it too. > > There were patches floated to in-ram recovery for those blocks so that you > could have a consistent fs w/o touching the disk but it didn't seem to get > far. Those were mine, I think. I got stuck at the point of needing to handle escaped blocks -- I couldn't find any way of reliably and efficiently getting hold of a buffer after it had been read from disk but before anybody else had a chance to access it. I think if I could have cracked that then I could have got it working. The only other missing piece of functionality was handling the transition from read-only (unrecovered) to read-write. It would have needed a very thorough audit of the places where ext3 was doing ll_rw_block and such like, though. Cheers, Duane. -- "I never could learn to drink that blood and call it wine" - Bob Dylan -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
