On Mon, Dec 14, 2020 at 6:06 PM Michael D Labriola <michael.d.labriola@xxxxxxxxx> wrote: > > I'm sporatically getting "no data available" as a reason to fail to > open files on an overlay mount. Most obvious is during ln of backup > file during apt install. Only seems to happen on copy_up from lower > layer. Lower layer is squashfs (I've seen it happen with both the > default zlib and also zstd compression), upper is EXT4. > > I've only bumped into this problem recently with 5.9+ kernels. I'm > gonna go see if I can reproduce in some older kernels I still have > installed. Rebooting into 5.4 made the problem go away and I can apt upgrade w/out any problems. Rebooting an affected virtual machine into 5.8 also fixed the problem, so it looks to be something introduced in 5.9. I suppose I should try 5.10 and see if this problem has already been fixed. > > Anyone else reporting this? -- Michael D Labriola 21 Rip Van Winkle Cir Warwick, RI 02886 401-316-9844 (cell)
