Public bug reported: I recently migrated to Mantic from Jammy and noticed that 6.5.0 has "DEAD" zswap. It also didn't work with HWE-6.5.0 (both -9 and -14) on Jammy.
Everything seems normal, all the parameters and no error msgs but frontswap stays 0k at all times and everything gets swapped directly to disk. No usage is reported in /sys/module/zswap/parameters and /sys/kernel/debug/zswap. Jammy with HWE 6.2.0 and Mantic with https://kernel.ubuntu.com/mainline/v6.6.13/ and https://kernel.ubuntu.com/mainline/v6.7.1/ work fine. I was able to reproduce the issue with https://kernel.ubuntu.com/mainline/v6.5.3/. (I would try the latest https://kernel.ubuntu.com/mainline/v6.5.13/ but the build failed due building host issues.) Seems like an upstream problem but not sure how to resolve it since Upstream 6.5 is abandoned and Jammy/Mantic 6.6 is months away... ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: kernel-bug ** Summary changed: - zswap is not working on 6.5 + zswap is not working with Linux Kernel 6.5.x ** Description changed: I recently migrated to Mantic from Jammy and noticed that 6.5.0 has - "DEAD" zswap. + "DEAD" zswap. It also didn't work with HWE-6.5.0 (both -9 and -14) on + Jammy. Everything seems normal, all the parameters and no error msgs but frontswap stays 0k at all times and everything gets swapped directly to disk. No usage is reported in /sys/module/zswap/parameters and /sys/kernel/debug/zswap. Jammy with HWE 6.2.0 and Mantic with https://kernel.ubuntu.com/mainline/v6.6.13/ and https://kernel.ubuntu.com/mainline/v6.7.1/ work fine. I was able to reproduce the issue with https://kernel.ubuntu.com/mainline/v6.5.3/. (I would try the latest https://kernel.ubuntu.com/mainline/v6.5.13/ but the build failed due building host issues.) Seems like an upstream problem but not sure how to resolve it since Upstream 6.5 is abandoned and Jammy/Mantic 6.6 is months away... -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2049991 Title: zswap is not working with Linux Kernel 6.5.x Status in linux package in Ubuntu: New Bug description: I recently migrated to Mantic from Jammy and noticed that 6.5.0 has "DEAD" zswap. It also didn't work with HWE-6.5.0 (both -9 and -14) on Jammy. Everything seems normal, all the parameters and no error msgs but frontswap stays 0k at all times and everything gets swapped directly to disk. No usage is reported in /sys/module/zswap/parameters and /sys/kernel/debug/zswap. Jammy with HWE 6.2.0 and Mantic with https://kernel.ubuntu.com/mainline/v6.6.13/ and https://kernel.ubuntu.com/mainline/v6.7.1/ work fine. I was able to reproduce the issue with https://kernel.ubuntu.com/mainline/v6.5.3/. (I would try the latest https://kernel.ubuntu.com/mainline/v6.5.13/ but the build failed due building host issues.) Seems like an upstream problem but not sure how to resolve it since Upstream 6.5 is abandoned and Jammy/Mantic 6.6 is months away... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2049991/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
