Patch breaks backup in two ways. First, this command zfs list -t snapshot -H -S creation -o name -d 1 rpool used to return a sorted list of snapshots of the named dataset, now it returns "cannot open 'rpool': operation not applicable to datasets of this type". Second, something simple like "zfs send -R rpool@zfs-auto-snap_hourly-2016-01-03-2300" causes a segfault: Core was generated by `zfs send -R rpool zfs-auto-snap_hourly-2016-01-03-2300'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007fa279efe561 in zfs_prop_get_type (prop=prop@entry=4294967295) at ../../module/zcommon/zfs_prop.c:592 592 ../../module/zcommon/zfs_prop.c: No such file or directory. (gdb) bt #0 0x00007fa279efe561 in zfs_prop_get_type (prop=prop@entry=4294967295) at ../../module/zcommon/zfs_prop.c:592 #1 0x00007fa279cb3c76 in send_iterate_prop (zhp=zhp@entry=0x1702860, nv=0x16fe880) at libzfs_sendrecv.c:718 #2 0x00007fa279cb3e86 in send_iterate_fs (zhp=zhp@entry=0x1702860, arg=arg@entry=0x7ffc5906cce0) at libzfs_sendrecv.c:776 #3 0x00007fa279cb547a in gather_nvlist (hdl=<optimized out>, fsname=fsname@entry=0x16fa330 "rpool", fromsnap=fromsnap@entry=0x0, tosnap=tosnap@entry=0x7ffc5906f74e "zfs-auto-snap_hourly-2016-01-03-2300", recursive=B_TRUE, nvlp=nvlp@entry=0x7ffc5906cdb0, avlp=0x7ffc5906cdb8) at libzfs_sendrecv.c:823 #4 0x00007fa279cb9930 in zfs_send (zhp=zhp@entry=0x16fa320, fromsnap=fromsnap@entry=0x0, tosnap=tosnap@entry=0x7ffc5906f74e "zfs-auto-snap_hourly-2016-01-03-2300", flags=flags@entry=0x7ffc5906d650, outfd=outfd@entry=1, filter_func=filter_func@entry=0x0, cb_arg=0x0, debugnvp=0x0) at libzfs_sendrecv.c:1476 #5 0x0000000000409136 in zfs_do_send (argc=<optimized out>, argv=0x7ffc5906d8f0) at zfs_main.c:3844 #6 0x000000000040548c in main (argc=4, argv=0x7ffc5906d8d8) at zfs_main.c:6727 Third (and this is not necessarily related to backups, but a related bug none-the-less), a simple command like "zfs get -r all oldrpool" seems to crash when it encounters a certain property: ... oldrpool/ROOT/funtoo/portage rootcontext none default oldrpool/ROOT/funtoo/portage relatime off default oldrpool/ROOT/funtoo/portage redundant_metadata all default oldrpool/ROOT/funtoo/portage overlay off default zsh: segmentation fault (core dumped) zfs get -r all oldrpool That results in a stack trace of: Core was generated by `zfs get -r all oldrpool'. Program terminated with signal SIGSEGV, Segmentation fault. #0 nvlist_lookup_common (nvl=0xa4bae0, name=0xa3ba10 "com.sun:auto-snapshot", type=DATA_TYPE_NVLIST, nelem=0x0, data=0x7ffdfcca5ab8) at ../../module/nvpair/nvpair.c:1343 1343 ../../module/nvpair/nvpair.c: No such file or directory. (gdb) bt #0 nvlist_lookup_common (nvl=0xa4bae0, name=0xa3ba10 "com.sun:auto-snapshot", type=DATA_TYPE_NVLIST, nelem=0x0, data=0x7ffdfcca5ab8) at ../../module/nvpair/nvpair.c:1343 #1 0x00007f4b7578534f in nvlist_lookup_common (data=<optimized out>, nelem=0x0, type=DATA_TYPE_NVLIST, name=<optimized out>, nvl=<optimized out>) at ../../module/nvpair/nvpair.c:1438 #2 nvlist_lookup_nvlist (nvl=<optimized out>, name=<optimized out>, val=<optimized out>) at ../../module/nvpair/nvpair.c:1437 #3 0x0000000000407b1b in get_callback (zhp=0xa49f60, data=0x7ffdfcca7d70) at zfs_main.c:1531 #4 0x0000000000405fb9 in zfs_for_each (argc=argc@entry=1, argv=argv@entry=0x7ffdfcca7f38, flags=<optimized out>, types=types@entry=(ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT | ZFS_TYPE_VOLUME), sortcol=<optimized out>, sortcol@entry=0x0, proplist=proplist@entry=0x7ffdfcca7db0, limit=0, callback=0x407840 <get_callback>, data=0x7ffdfcca7d70) at zfs_iter.c:448 #5 0x000000000040b405 in zfs_do_get (argc=1, argv=0x7ffdfcca7f38) at zfs_main.c:1792 #6 0x000000000040548c in main (argc=5, argv=0x7ffdfcca7f18) at zfs_main.c:6727 Reproducible: Always
closing this bug, as old versions are gone.
