hammer volume-add causes panic

[lhmwzy]

I have the same problem.

uname -a
DragonFly lhmwzy.org. 2.13-DEVELOPMENT DragonFly
2.13.0.34.g10c9b-DEVELOPMENT #0: Tue Oct 11 21:40:17 PDT 2011
 root at pkgbox64.dragonflybsd.org:/usr/obj/build/justin/dragonfly/sys/X86_64_GENERIC
 x86_64
>
> 2011/8/15 Matteo Cypriani <mcy at lm7.fr>:
>> Hello,
>>
>> I have troubles trying to add a volume to my HAMMER root filesystem on a fresh
>> install (DragonFly 2.10.1 i386, on an AMD Athlon 2000+ with 512 MB RAM). Maybe
>> I'm doing something wrong, but if so I don't see what. I created a new
>> partition table on the hard drive (ad2) with a DF slice (ad2s1), and a hammer
>> partition on it (ad2s1d). Then I just run hammer volume-add /dev/ad2s1d /, and
>> it panics.
>>
>> If I add the volume to /boot/loader.conf and /etc/fstab, after a reboot I can
>> see it in hammer volume-list, but hammer info gives exactly the same results
>> as with only the first volume. hammer volume-del fails (device busy), but I can
>> safely remove the new volume from loader.conf and fstab (I also tried without
>> running volume-del, same thing).
>>
>> It is fully reproducible, with this hard drive and with another one (and if I
>> remember well, I had the same problem when I played with HAMMER in a KVM
>> virtual machine some times ago).
>> The session log below shows how I reproduced the problem (with the same first
>> drive). It seems that something was initialised, because I had to erase the
>> beginning of the partition to re-add the volume.
>>
>> Please tell me if I made a mistake somewhere, and if not what I can do to help
>> solving the bug. I attached the crash info and core files (I can provide the
>> full core dump if needed).
>>
>> Cheers,
>>
>>  Matteo
>>
>>
>> 16:38 root at vicious ~# fdisk ad2
>> ******* Working on device /dev/ad2 *******
>> parameters extracted from device are:
>> cylinders=24696 heads=256 sectors/track=63 (16128 blks/cyl)
>>
>> Figures below won't work with BIOS for partitions not in cyl 1
>> parameters to be used for BIOS calculations are:
>> cylinders=24696 heads=256 sectors/track=63 (16128 blks/cyl)
>>
>> Media sector size is 512
>> Warning: BIOS sector numbering starts with sector 1
>> Information from DOS bootblock is:
>> The data for partition 1 is:
>> sysid 165,(DragonFly/FreeBSD/NetBSD/386BSD)
>>    start 63, size 398297025 (194480 Meg), flag 80 (active)
>>        beg: cyl 0/ head 1/ sector 1;
>>        end: cyl 1023/ head 255/ sector 63
>> The data for partition 2 is:
>> <UNUSED>
>> The data for partition 3 is:
>> <UNUSED>
>> The data for partition 4 is:
>> <UNUSED>
>> 16:39 root at vicious ~# disklabel ad2s1
>> # /dev/ad2s1:
>> #
>> # Informational fields calculated from the above
>> # All byte equivalent offsets must be aligned
>> #
>> # boot space:    1044992 bytes
>> # data space:  199147483 blocks # 194479.96 MB (203927023104 bytes)
>> #
>> # NOTE: If the partition data base looks odd it may be
>> #       physically aligned instead of slice-aligned
>> #
>> diskid: 076febcf-c669-11e0-bb09-01138f237da1
>> label:
>> boot2 data base:      0x000000001000
>> partitions data base: 0x000000100200
>> partitions data stop: 0x002f7b0f7000
>> backup label:         0x002f7b0f7000
>> total size:           0x002f7b0f8200    # 194480.97 MB
>> alignment: 4096
>> display block size: 1024        # for partition display only
>>
>> 16 partitions:
>> #          size     offset    fstype   fsuuid
>>  d:  199147480          0    HAMMER    #  194479.961MB
>>  d-stor_uuid: 5191beaf-c67a-11e0-9d47-01138f237da1
>> 16:40 root at vicious ~# hammer volume-add /dev/ad2s1d /
>> hammer volume-add ioctl: Inappropriate file type or format
>> 16:41 root at vicious ~# dd if=/dev/zero of=/dev/ad2s1d bs=1M count=1
>> 1+0 records in
>> 1+0 records out
>> 1048576 bytes transferred in 0.037720 secs (27798965 bytes/sec)
>> 16:42 root at vicious ~# hammer volume-add /dev/ad2s1d /
>>
>> An error occurred: 79
>> panic: hammer_io_set_modlist: duplicate entry
>> Trace beginning at frame 0xcc2e37a0
>> panic(ffffffff,c07acd60,c06bfbbc,cc2e37d0,c1cadf30) at panic+0x101
>> panic(c06bfbbc,c1cadf30,0,c1cadf38,c9d69670) at panic+0x101
>> hammer_io_modify(cc2e3880,cc2e3814,c0533fbe,c1cadf38,1) at
>> hammer_io_modify+0x186
>> hammer_modify_volume(cc2e3a30,c1cadf30,c5b88094,4,cc2e3860) at
>> hammer_modify_volume+0x4a
>> hammer_ioc_volume_add(cc2e3a30,c9dd44e0,c97ca258,c1d9f950,c1d9f954) at
>> hammer_ioc_volume_add+0x49a
>> hammer_ioctl(c9dd44e0,c4306811,c97ca258,1,c7d91ba8) at hammer_ioctl+0xf41
>> hammer_vop_ioctl(cc2e3a98,c0725d48,c1d80e00,cc1c7498,cc2e3ae8) at
>> hammer_vop_ioctl+0x5e
>> vop_ioctl(c1d80e00,c1db8538,c4306811,c97ca258,1) at vop_ioctl+0x75
>> vn_ioctl(c7dcf1e8,c4306811,c97ca258,c7d91ba8,cc2e3cf0) at vn_ioctl+0x106
>> fo_ioctl(c7d91ba8,cc2e3cf0,430,c7dc0000,c7dc0000) at fo_ioctl+0x3c
>> mapped_ioctl(3,c4306811,bfbff280,0,cc2e3cf0) at mapped_ioctl+0x4ae
>> sys_ioctl(cc2e3cf0,cc2e3d00,c,c9743158,cc2e3cf0) at sys_ioctl+0x2e
>> syscall2(cc2e3d40) at syscall2+0x232
>> Xint0x80_syscall() at Xint0x80_syscall+0x36
>> Debugger("panic")
>> Stopped at   Debugger+0x3f: movb   $0,in_Debugger.4431
>>
>