Exactly the same issue, also inside China (mainland). When snapd using ~5M/s of write, `snap changes` is:
ID Status Spawn Ready Summary 347 Doing today at 16:37 HKT - Auto-refresh snaps "<other snap>", "wine-platform-runtime" Disk write is done once the `snap changes` turns to: ID Status Spawn Ready Summary 347 Error today at 16:37 HKT today at 17:03 HKT Auto-refresh snaps "<other snap>", "wine-platform-runtime" Syslog b/w 16:37 and 17:03: Jan 30 16:37:02 HOSTNAME snapd[1549]: storehelpers.go:436: cannot refresh: Jan 30 16:37:02 HOSTNAME snapd[1549]: snap has no updates available: "<other snap 1>", "<other snap 2>", "<other snaps....>" Jan 30 16:37:02 HOSTNAME snapd[1549]: snap not found: "wine-platform" Jan 30 17:03:00 HOSTNAME snapd[1549]: storehelpers.go:436: cannot refresh snap "wine-platform-runtime": snap has no updates available -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1839237 Title: snapd disk write usage very high on 19.04 with snapd 2.39.3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1839237/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs