My devoted followers may recall me ranting about the instability of #LineageOS on my particular device. I finally figured out that it was using f2fs on a typically old phone kernel for the root filesystem, and switched that to ext4, given f2fs' reputation for "walk too near anything electrical and kiss your shit goodbye" levels of reliability. Sigh, #Android. We'll see how this goes.
In related news, if you need to store a ton of similar TWRP backups, lrzip is real great at compressing them.