In <BB9A0F28-A902-4FE4-BA58-A66EA93290F8@xxxxxxxxx>; Elmer Zhang <freeboy6716@xxxxxxxxx> wrote as Subject "Re: Which version of nilfs do you use?": > There is more than 2TB of data and a large number of databases, tables in our MySQL service. The conventional cold backup methods can not meet our needs. So we are trying to find some other methods. I posted report mail about the "bad btree node" error in 2012-11-30, I told about VirtualBox. When I met the error first, virtual disk file (approx. 16GB) was in NILFS FS. Zhang's DB is large. Perhaps there are files which has large size, I think. And these files are updated frequently. Can the common point (file size, update) cause inconsistency? -- To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html