[sheepdog-users] Crash removing a snapshot

[Valerio Pachera]

I was doing some testing on my laptop with a single instance of sheepdog

sheep --pidfile /var/run/sheep.pid -n /mnt/sheep/0 -c local -z 1

Sheepdog daemon version 0.9.0_1_g9d67dec

dog cluster format -c 2
Number of copies (2) is larger than number of nodes (1).
Are you sure you want to continue? [yes/no]: yes
using backend plain store

dog vdi create -P test 1G
dog vdi snapshot test

dd if=/dev/urandom bs=1M count=100 | dog vdi write test
100+0 record dentro
100+0 record fuori
104857600 byte (105 MB) copiati, 10,5425 s, 9,9 MB/s

dog vdi list
  Name        Id    Size    Used  Shared    Creation time   VDI id  Copies  Tag
s test         1  1.0 GB  1.0 GB  0.0 MB 2014-11-04 09:18   7c2b25      2
  test         0  1.0 GB  104 MB  920 MB 2014-11-04 09:18   7c2b26      2

dog vdi delete -s 1 test
failed to read a response
Failed to write object 807c2b2500000000
failed to update inode for discarding objects: 807c2b2500000000

sheep.log
Nov 04 09:18:03   INFO [main] md_add_disk(343) /mnt/sheep/0/obj, vdisk
nr 50, total disk 1
Nov 04 09:18:03   INFO [main] send_join_request(1006) IPv4
ip:127.0.0.1 port:7000 going to join the cluster
Nov 04 09:18:03 NOTICE [main] nfs_init(607) nfs server service is not compiled
Nov 04 09:18:03   WARN [main] check_host_env(497) Allowed open files
1024 too small, suggested 6144000
Nov 04 09:18:03   INFO [main] main(951) sheepdog daemon (version
0.9.0_1_g9d67dec) started
Nov 04 09:18:06   INFO [main] rx_main(830) req=0x21a74d0, fd=19,
client=127.0.0.1:59692, op=MAKE_FS, data=(not string)
Nov 04 09:18:06   INFO [main] tx_main(882) req=0x21a74d0, fd=19,
client=127.0.0.1:59692, op=MAKE_FS, result=00
Nov 04 09:18:31   INFO [main] rx_main(830) req=0x21a74d0, fd=19,
client=127.0.0.1:59700, op=MAKE_FS, data=(not string)
Nov 04 09:18:31   INFO [main] tx_main(882) req=0x21a74d0, fd=19,
client=127.0.0.1:59700, op=MAKE_FS, result=00
Nov 04 09:18:38   INFO [main] rx_main(830) req=0x21a74d0, fd=15,
client=127.0.0.1:59703, op=NEW_VDI, data=(not string)
Nov 04 09:18:38   INFO [main] tx_main(882) req=0x21a74d0, fd=15,
client=127.0.0.1:59703, op=NEW_VDI, result=00
Nov 04 09:18:45   INFO [main] rx_main(830) req=0x21ac470, fd=15,
client=127.0.0.1:59707, op=NEW_VDI, data=(not string)
Nov 04 09:18:46   INFO [main] tx_main(882) req=0x21ac470, fd=15,
client=127.0.0.1:59707, op=NEW_VDI, result=00
Nov 04 09:20:08  EMERG [io 12419] oid_to_vnodes(80) PANIC: can't find
a valid vnode
Nov 04 09:20:08  EMERG [io 12419] crash_handler(268) sheep exits
unexpectedly (Aborted).
Nov 04 09:20:08  EMERG [io 12419] sd_backtrace(833) sheep.c:270: crash_handler
Nov 04 09:20:08  EMERG [io 12419] sd_backtrace(847)
/lib/x86_64-linux-gnu/libpthread.so.0(+0xf09f) [0x7f17751ed09f]
Nov 04 09:20:08  EMERG [io 12419] sd_backtrace(847)
/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x34) [0x7f17747e1164]
Nov 04 09:20:08  EMERG [io 12419] sd_backtrace(847)
/lib/x86_64-linux-gnu/libc.so.6(abort+0x17f) [0x7f17747e43df]
Nov 04 09:20:08  EMERG [io 12419] sd_backtrace(833) sheep.h:80: oid_to_vnodes
Nov 04 09:20:08  EMERG [io 12419] sd_backtrace(833) ops.c:1923: do_process_work
Nov 04 09:20:08  EMERG [io 12419] sd_backtrace(833) work.c:340: worker_routine
Nov 04 09:20:08  EMERG [io 12419] sd_backtrace(847)
/lib/x86_64-linux-gnu/libpthread.so.0(+0x6b4f) [0x7f17751e4b4f]
Nov 04 09:20:08  EMERG [io 12419] sd_backtrace(847)
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6c) [0x7f177488b7bc]