Public bug reported: Hi,
One of our production system hang while executing a custom backup script, using LVM snapshots and raw copies in order to build an alternative boot environment. We opened an issue on the LVM2 Github (https://github.com/lvmteam/lvm2/issues/159), and one of the contributor advises us to use at least the LVM2 2.03.17 version, built with the following patch : https://github.com/lvmteam/lvm2/commit/a3eb6ba425773224076c41aabc3c490a6a016ee6 The libaio library is, on previous versions, excluded of the mlock call and it can lead to a full system hang, specifically during a rootfs snapshot removal, as removing a shapshot freezes the underlying volume and the system won't be able to read on that volume during this operation. In rare condtions, this can be harmful if the system decides to page-out during this operation. As I understand that it may be complicated to upgrade the LVM2 version on stable releases of Ubuntu, is it possible to cherry-pick the relevant (and really simple/small) patch from the LVM2 2.03.17 version on the current LVM2 versions used by Ubuntu ? Regards, ** Affects: lvm2 Importance: Unknown Status: Unknown ** Affects: lvm2 (Ubuntu) Importance: Undecided Status: New ** Bug watch added: github.com/lvmteam/lvm2/issues #159 https://github.com/lvmteam/lvm2/issues/159 ** Also affects: lvm2 via https://github.com/lvmteam/lvm2/issues/159 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2084233 Title: Excluded libaio library from mlock may hang system while removing rootfs snapshot To manage notifications about this bug go to: https://bugs.launchpad.net/lvm2/+bug/2084233/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
