We are on ESXi, version 5.5, according to our hosting provider. To run the test, I created a new, 40GB virtual disk. It's attached as SCSI ID 1:3, on a VMware Paravirtual SCSI adapter. I set it up as a PV and put ext4 on it the "fast way," which is what I always do:
701 pvcreate /dev/sdd 702 vgextend mongo03-vg00 /dev/sdd 703 lvcreate -n test -l 100%PV mongo03-vg00 /dev/sdd 704 mount 705 mkfs.ext4 -E lazy_itable_init=1 -O uninit_bg /dev/mongo03-vg00/test Then I ran the test. Initially it passed, twice: /test/db.1 /test repro in db.1 creating f0 creating f1 touching files hexdump f0: 0000000 0000 0000 0000 0000 0000 0000 0000 0000 * ... But then, after doing some "multitasking" (we're working on an upgrade to MongoDB 2.6.5) and noticing that it was finished, I ran "sync" three times and checked the f0 files again: hexdump db.1/f0 0000000 0000 0000 0000 0000 0000 0000 0000 0000 * 0001000 cccc cccc cccc cccc cccc cccc cccc cccc * 0007000 0000 0000 0000 0000 0000 0000 0000 0000 * 1000000 * hexdump db.10/f0 0000000 0000 0000 0000 0000 0000 0000 0000 0000 * 1000000 * hexdump db.2/f0 0000000 0000 0000 0000 0000 0000 0000 0000 0000 * 0001000 cccc cccc cccc cccc cccc cccc cccc cccc * 0007000 0000 0000 0000 0000 0000 0000 0000 0000 * 1000000 * hexdump db.3/f0 0000000 0000 0000 0000 0000 0000 0000 0000 0000 * 0001000 cccc cccc cccc cccc cccc cccc cccc cccc * 0007000 0000 0000 0000 0000 0000 0000 0000 0000 * 1000000 * hexdump db.4/f0 0000000 0000 0000 0000 0000 0000 0000 0000 0000 * 0001000 cccc cccc cccc cccc cccc cccc cccc cccc * 0007000 0000 0000 0000 0000 0000 0000 0000 0000 * 1000000 * hexdump db.5/f0 0000000 0000 0000 0000 0000 0000 0000 0000 0000 * 1000000 * hexdump db.6/f0 0000000 0000 0000 0000 0000 0000 0000 0000 0000 * 1000000 * hexdump db.7/f0 0000000 0000 0000 0000 0000 0000 0000 0000 0000 * 1000000 * hexdump db.8/f0 0000000 0000 0000 0000 0000 0000 0000 0000 0000 * 1000000 * hexdump db.9/f0 0000000 0000 0000 0000 0000 0000 0000 0000 0000 * 1000000 * -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1371591 Title: file not initialized to 0s under some conditions To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1371591/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
