Thank you Austin & Chris for your replies! On Fri, 13 Oct 2017, at 01:19 AM, Austin S. Hemmelgarn wrote: > Same here on a pair of 3 year old NUC's. Based on the traces and the > other information, I'd be willing to bet this is probably the root cause > of the issues.
It probably is... since when I remove my new 4TB USB disk from the front, I am at least able to mount my two 2x2TB in degraded mode and see my data! So I am not quite sure what to do now. I don't trust USB hubs. On a different NUC I've noticed I can't charge my iPhone anymore! https://mail-archive.com/linux-usb@vger.kernel.org/msg95231.html So... is there any end in sight for the "USB power" problem? Does USB-C / Thunderbolt address this issue? :( Try return my new 4TB to Amazon and find an externally powered one > > merely the Btrfs signature is wiped from the deleted device(s). So you > > could restore that signature and the device would be valid again; Wonder how would you do that, in order to have a working snapshot that I can put in cold storage? Nonetheless I hope the btrfs developers can make it possible to remove a RAID1 drive, to put in cold storage use case, without any pfaffing. I ran that debug info: https://s.natalian.org/2017-10-13/btrfs-reply.txt To summarise: * sdb - new 4TB disk that makes my raid1 unmountable atm when connected * sd{c,d} - old 2tb Here's the accompanying dmesg.txt https://s.natalian.org/2017-10-13/dmesg.txt sorry, it might be difficult to follow since I was moving the 4TB between the front ports and such. Kind regards, -- 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
