Exactly the same here. Ubuntu 14.04.2 LVM version: 2.02.98(2) (2012-10-15) Library version: 1.02.77 (2012-10-15) Driver version: 4.27.0
lvconvert --merge /dev/vg1/lv1_snap (...) lv1: Merged: 100,0% Segmentation fault (core dumped) Syslog: Apr 26 18:20:03 vmhost1 kernel: [97102.219159] lvm[6560]: segfault at 28 ip 0000000000481a79 sp 00007ffdcb6849c0 error 4 in lvm[400000+e1000] Apr 26 18:20:13 vmhost1 kernel: [97112.126617] lvconvert[6484]: segfault at 28 ip 0000000000481a79 sp 00007ffe68755c80 error 4 in lvm[400000+e1000] -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to lvm2 in Ubuntu. https://bugs.launchpad.net/bugs/1415340 Title: lvconvert segmentation fault on merge Status in lvm2 package in Ubuntu: Confirmed Bug description: 1: System information root@saturn:~# lsb_release -rd Description: Ubuntu 14.04.1 LTS Release: 14.04 2: Package information root@saturn:~# apt-cache policy lvm2 lvm2: Installed: 2.02.98-6ubuntu2 Candidate: 2.02.98-6ubuntu2 Version table: *** 2.02.98-6ubuntu2 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages 100 /var/lib/dpkg/status root@saturn:~# 3. Expected behavior: lvconvert --merge should not segfault after merge is successful. 4. Actual behavior: root@saturn:~# mount /dev/saturn/rings.two /mnt root@saturn:~# touch /mnt/foo root@saturn:~# umount /mnt root@saturn:~# valgrind lvconvert --merge /dev/saturn/rings.two ==23772== Memcheck, a memory error detector ==23772== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al. ==23772== Using Valgrind-3.10.0.SVN and LibVEX; rerun with -h for copyright info ==23772== Command: lvconvert --merge /dev/saturn/rings.two ==23772== ==23772== Warning: invalid file descriptor 1024 in syscall close() ==23772== Warning: invalid file descriptor 1025 in syscall close() ==23772== Warning: invalid file descriptor 1026 in syscall close() ==23772== Warning: invalid file descriptor 1027 in syscall close() ==23772== Use --log-fd=<number> to select an alternative log fd. ==23772== Warning: invalid file descriptor 1028 in syscall close() ==23772== Warning: invalid file descriptor 1029 in syscall close() ==23772== Warning: invalid file descriptor 1030 in syscall close() Merging of volume rings.two started. Internal error: Reserved memory (126324736) not enough: used 126881792. Increase activation/reserved_memory? rings: Merged: 97.0% ==23772== Invalid read of size 8 ==23772== at 0x481A79: lv_is_merging_cow (in /sbin/lvm) ==23772== by 0x4997DD: dev_manager_snapshot_percent (in /sbin/lvm) ==23772== by 0x43AF2B: lv_snapshot_percent (in /sbin/lvm) ==23772== by 0x417110: ??? (in /sbin/lvm) ==23772== by 0x427C3F: ??? (in /sbin/lvm) ==23772== by 0x4281BC: poll_daemon (in /sbin/lvm) ==23772== by 0x41853B: lvconvert_poll (in /sbin/lvm) ==23772== by 0x41862A: ??? (in /sbin/lvm) ==23772== by 0x41A9D2: ??? (in /sbin/lvm) ==23772== by 0x42EF21: process_each_lv_in_vg (in /sbin/lvm) ==23772== by 0x4304B4: process_each_lv (in /sbin/lvm) ==23772== by 0x41B3DC: lvconvert (in /sbin/lvm) ==23772== Address 0x28 is not stack'd, malloc'd or (recently) free'd ==23772== ==23772== ==23772== Process terminating with default action of signal 11 (SIGSEGV): dumping core ==23772== Access not within mapped region at address 0x28 ==23772== at 0x481A79: lv_is_merging_cow (in /sbin/lvm) ==23772== by 0x4997DD: dev_manager_snapshot_percent (in /sbin/lvm) ==23772== by 0x43AF2B: lv_snapshot_percent (in /sbin/lvm) ==23772== by 0x417110: ??? (in /sbin/lvm) ==23772== by 0x427C3F: ??? (in /sbin/lvm) ==23772== by 0x4281BC: poll_daemon (in /sbin/lvm) ==23772== by 0x41853B: lvconvert_poll (in /sbin/lvm) ==23772== by 0x41862A: ??? (in /sbin/lvm) ==23772== by 0x41A9D2: ??? (in /sbin/lvm) ==23772== by 0x42EF21: process_each_lv_in_vg (in /sbin/lvm) ==23772== by 0x4304B4: process_each_lv (in /sbin/lvm) ==23772== by 0x41B3DC: lvconvert (in /sbin/lvm) ==23772== If you believe this happened as a result of a stack ==23772== overflow in your program's main thread (unlikely but ==23772== possible), you can try to increase the size of the ==23772== main thread stack using the --main-stacksize= flag. ==23772== The main thread stack size used in this run was 8388608. ==23772== ==23772== HEAP SUMMARY: ==23772== in use at exit: 586,786 bytes in 712 blocks ==23772== total heap usage: 9,622 allocs, 8,910 frees, 19,027,414 bytes allocated ==23772== ==23772== LEAK SUMMARY: ==23772== definitely lost: 0 bytes in 0 blocks ==23772== indirectly lost: 0 bytes in 0 blocks ==23772== possibly lost: 0 bytes in 0 blocks ==23772== still reachable: 586,786 bytes in 712 blocks ==23772== suppressed: 0 bytes in 0 blocks ==23772== Rerun with --leak-check=full to see details of leaked memory ==23772== ==23772== For counts of detected and suppressed errors, rerun with: -v ==23772== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0) Segmentation fault (core dumped) Merge was successful: root@saturn:~# mount /dev/saturn/rings /mnt root@saturn:~# ls /mnt -la total 17 drwxr-xr-x 3 root root 1024 Jan 28 00:01 . drwxr-xr-x 22 root root 4096 Jan 17 06:36 .. -rw-r--r-- 1 root root 0 Jan 28 00:01 foo drwx------ 2 root root 12288 Jan 28 00:00 lost+found Replication steps (For me, anyways): 1) Create empty lv (lv0) 2) create snapshot of lv (lv1) 3) Create filesystem on lv0 4) Create snapshot of lv0 (lv2) 5) mount lv2 and use touch to create a file 6) unmount lv2 7) lvconvert --merge /dev/vol00/lv2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/1415340/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
