** Description changed: Binary package hint: linux-image-2.6.15-28-amd64-server - When trying to load a large (5GB) sql file into mysql, mysql errors out, - segfaults, or the entire system locks up hard. + md5sum returns inconsistent results when run repeatedly on a large text + file stored on a linux software (md) raid1 volume. - In the error or segfault case, examining the input file at the location - where mysql crashed reveals corruption that wasn't present before trying - to load into mysql. + This is not the iommu issue experienced by other amd64 users: + https://bugs.launchpad.net/ubuntu/+source/linux- + source-2.6.15/+bug/128568 - Rebooting the system seems to remove the corruption. The corruption - doesn't appear unless mysql attempts to load the file. The file is set - to read-only. + However, this system did experience the iommu issue and is currently + running with iommu=soft as a workaround. This is happening on a dual dual-core opteron system with 8GB - registered/ecc memory running up-to-date LTS. It also happens on - another nearly identical system running up-to-date LTS. Both can run - memtest with no errors (the first ran for almost 70 passes before I - stopped it). - - It does not happen on a third nearly identical system which is running - out-of-date Breezy Badger (w/64 bit kernel). + registered/ecc memory running up-to-date LTS. The system ran memtest86 + for over 75 passes with no errors. I started a thread about this problem at http://ubuntuforums.org/showthread.php?p=3101571 , but another user suggested it was turning into a bug report. Some more background info is available there.
-- opteron amd64 data corruption https://bugs.launchpad.net/bugs/129260 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
