Austin S. Hemmelgarn posted on Mon, 04 Dec 2017 07:18:11 -0500 as excerpted: > On 2017-12-01 16:50, Matt McKinnon wrote: >> Well, it's at zero now... >> >> # btrfs fi df /export/ >> Data, single: total=30.45TiB, used=30.25TiB >> System, DUP: total=32.00MiB, used=3.62MiB >> Metadata, DUP: total=66.50GiB, used=65.16GiB >> GlobalReserve, single: total=512.00MiB, used=0.00B > GlobalReserve seems to be used temporarily for certain cases of metadata > COW regardless of how full the FS actually is, I'm betting that it just so > happened that such a case was in progress when you got the info > previously. If you aren't seeing it regularly used, it's (probably) not > an issue. > > Duncan is correct though when dealing with long-term usage. If you see > GlobalReserve usage that persists for an extended period of time, > something is almost certainly wrong, especially if the FS isn't close to > being full. Thanks. I wasn't aware global reserve was routinely temporarily used. -- 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 majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
