Nisse Karlsson posted on Wed, 15 Jun 2016 11:58:36 +0200 as excerpted: > Since I have about 1.5TB unallocated space it's my understanding that > this shouldn't be a problem, or am I completely wrong?
Quick partial answer... It's not just unallocated space in total that matters, but also the number of devices with unallocated space. To write raid10 chunks requires four devices. To write raid1 chunks requires two. However, your usage output does indicate several hundred gigs of unallocated space on multiple devices, so convert to raid1 shouldn't be ENOSPCing... That it is would indicate a bug. There have been various bugs of this sort, but I'm just a list regular, not a dev, and I'm not sure of the current status, whether any such bugs are currently known or not. You don't mention kernel version in your post and I don't have time to look up the bug ATM, but you might try the latest 4.1 and 4.4 LTS kernels as well as the latest 4.6 and 4.7-rc kernels to see if it makes a difference. If it's a problem with 4.6 and 4.7-rc then it becomes interesting, and if it works with 4.4 or 4.1, even more so. -- Duncan - List replies preferred. No HTML msgs. "Every nonfree program has a lord, a master -- and if you use the program, he is your master." Richard Stallman -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
