[sheepdog-users] 答复: questions regarding node failure scenario

Corin Langosch info at corinlangosch.com
Thu Jan 15 09:03:41 CET 2015


Hi!

thanks, this is good to know. I was indeed using qemu 2.1.2 compiled from sources. I'll retry with 2.2.0 soon.

Any ideas about the "corrupted .stale" messages?

Thanks,
Corin
 
Am 15.01.2015 um 03:51 schrieb redtone:
> Qemu 1.7 and qemu 2.2 support reconnect.
> Qemu 2.1 not support reconnect.
>
> -----邮件原件-----
> 发件人: sheepdog-users [mailto:sheepdog-users-bounces at lists.wpkg.org] 代表
> Corin Langosch
> 发送时间: 2015年1月14日 18:07
> 收件人: sheepdog-users at lists.wpkg.org
> 主题: [sheepdog-users] questions regarding node failure scenario
>
> Hi again,
>
> I setup a test cluster (9.1 compiled from sources with zookeeper) of 6
> machines and simulated a simple node failure. For
> that I simply put a single VDI in the cluster, disabled recovery (to see how
> sheepdog behaves while nodes/ disks are
> down), started qemu and then killed one sheep process with "kill PID" (the
> one which is also acting as a gateway for the
> local qemu process). Here's what happened:
>
> - qemu died
>
> - cluster info
> Cluster status: running, auto-recovery disabled
> Cluster created at Tue Jan  6 00:04:29 2015
> Epoch Time           Version
> 2015-01-06 22:54:53      3 [10.0.0.4:7000, 10.0.0.5:7000, 10.0.0.6:7000, 10.
> 0.0.7:7000, 10.0.0.8:7000, 10.0.0.8:7001]
> 2015-01-06 22:54:20      2 [10.0.0.4:7000, 10.0.0.6:7000, 10.0.0.7:7000, 10.
> 0.0.8:7000, 10.0.0.8:7001]
> 2015-01-06 00:04:29      1 [10.0.0.4:7000, 10.0.0.5:7000, 10.0.0.6:7000, 10.
> 0.0.7:7000, 10.0.0.8:7000, 10.0.0.8:7001]
>
> - logs on node where sheep was killed (10.0.0.5) shows this
> Jan 06 22:17:44   INFO [main] vdi_lock(450) VDI d63538 is locked
> Jan 06 22:53:49   INFO [main] rx_main(830) req=0x7fabe0000e80, fd=338,
> client=127.0.0.1:49990, op=DISABLE_RECOVER,
> data=(null)
> Jan 06 22:53:49   INFO [main] tx_main(882) req=0x7fabe0000e80, fd=338,
> client=127.0.0.1:49990, op=DISABLE_RECOVER, result=00
> Jan 06 22:54:20   INFO [main] main(966) shutdown
> Jan 06 22:54:20   INFO [main] zk_leave(989) leaving from cluster
> Jan 06 22:54:52   INFO [main] md_add_disk(343) /xfs-drive1/sheepdog/obj,
> vdisk nr 359, total disk 1
> Jan 06 22:54:52   INFO [main] send_join_request(1032) IPv4 ip:10.0.0.5
> port:7000 going to join the cluster
> Jan 06 22:54:52 NOTICE [main] nfs_init(608) nfs server service is not
> compiled
> Jan 06 22:54:52   INFO [main] check_host_env(500) Allowed open files 65535,
> suggested 6144000
> Jan 06 22:54:52   INFO [main] main(958) sheepdog daemon (version 0.9.1)
> started
> Jan 06 22:54:53  ERROR [block] sheep_exec_req(1170) failed The buffer is too
> small, remote address: 10.0.0.4:7000, op
> name: VDI_STATE_SNAPSHOT_CTL
> Jan 06 22:54:53  ERROR [block] sheep_exec_req(1170) failed The buffer is too
> small, remote address: 10.0.0.4:7000, op
> name: VDI_STATE_SNAPSHOT_CTL
> Jan 06 22:54:53  ERROR [block] sheep_exec_req(1170) failed The buffer is too
> small, remote address: 10.0.0.4:7000, op
> name: VDI_STATE_SNAPSHOT_CTL
> Jan 06 22:54:53  ERROR [block] sheep_exec_req(1170) failed The buffer is too
> small, remote address: 10.0.0.4:7000, op
> name: VDI_STATE_SNAPSHOT_CTL
> Jan 06 22:56:13   INFO [main] cluster_lock_vdi_main(1349) node: IPv4
> ip:10.0.0.5 port:7000 is locking VDI (type:
> normal): d63538
> Jan 06 22:56:13   INFO [main] vdi_lock(450) VDI d63538 is locked
> Jan 06 22:56:13  ERROR [rw 22347] sheep_exec_req(1170) failed Network error
> between sheep, remote address:
> 10.0.0.4:7000, op name: READ_PEER
> Jan 06 22:56:13  ERROR [rw 22347] sheep_exec_req(1170) failed Network error
> between sheep, remote address:
> 10.0.0.6:7000, op name: READ_PEER
> Jan 06 22:56:13  ERROR [rw 22347] sheep_exec_req(1170) failed Network error
> between sheep, remote address:
> 10.0.0.7:7000, op name: READ_PEER
> Jan 06 22:56:13  ERROR [rw 22347] sheep_exec_req(1170) failed No object
> found, remote address: 10.0.0.8:7000, op name:
> READ_PEER
> Jan 06 22:56:13  ERROR [rw 22347] sheep_exec_req(1170) failed Network error
> between sheep, remote address:
> 10.0.0.8:7001, op name: READ_PEER
> Jan 06 22:56:16  ERROR [rw 22347] sheep_exec_req(1170) failed Network error
> between sheep, remote address:
> 10.0.0.4:7000, op name: READ_PEER
> Jan 06 22:56:16  ERROR [rw 22347] sheep_exec_req(1170) failed Network error
> between sheep, remote address:
> 10.0.0.6:7000, op name: READ_PEER
> Jan 06 22:56:16  ERROR [rw 22347] sheep_exec_req(1170) failed Network error
> between sheep, remote address:
> 10.0.0.7:7000, op name: READ_PEER
> Jan 06 22:56:16  ERROR [rw 22347] sheep_exec_req(1170) failed No object
> found, remote address: 10.0.0.8:7000, op name:
> READ_PEER
> Jan 06 22:56:16  ERROR [rw 22347] sheep_exec_req(1170) failed Network error
> between sheep, remote address:
> 10.0.0.8:7001, op name: READ_PEER
> Jan 06 22:56:16  ERROR [rw 22347] sheep_exec_req(1170) failed Network error
> between sheep, remote address:
> 10.0.0.4:7000, op name: READ_PEER
> Jan 06 22:56:16  ERROR [rw 22347] sheep_exec_req(1170) failed Network error
> between sheep, remote address:
> 10.0.0.6:7000, op name: READ_PEER
> Jan 06 22:56:16  ERROR [rw 22347] sheep_exec_req(1170) failed Network error
> between sheep, remote address:
> 10.0.0.7:7000, op name: READ_PEER
> ...
>
> - logs on 10.0.0.4 show this
> Jan 06 22:17:44   INFO [main] vdi_lock(450) VDI d63538 is locked
> Jan 06 22:54:53   INFO [main] local_vdi_state_snapshot_ctl(1388) getting vdi
> state snapshot at epoch 1
> Jan 06 22:54:53   INFO [main] get_vdi_state_snapshot(1783) maximum allowed
> length: 512, required length: 4260
> Jan 06 22:54:53  ERROR [main] local_vdi_state_snapshot_ctl(1397) failed to
> get vdi state snapshot: The buffer is too small
> Jan 06 22:54:53   INFO [main] local_vdi_state_snapshot_ctl(1388) getting vdi
> state snapshot at epoch 1
> Jan 06 22:54:53   INFO [main] get_vdi_state_snapshot(1783) maximum allowed
> length: 1024, required length: 4260
> Jan 06 22:54:53  ERROR [main] local_vdi_state_snapshot_ctl(1397) failed to
> get vdi state snapshot: The buffer is too small
> Jan 06 22:54:53   INFO [main] local_vdi_state_snapshot_ctl(1388) getting vdi
> state snapshot at epoch 1
> Jan 06 22:54:53   INFO [main] get_vdi_state_snapshot(1783) maximum allowed
> length: 2048, required length: 4260
> Jan 06 22:54:53  ERROR [main] local_vdi_state_snapshot_ctl(1397) failed to
> get vdi state snapshot: The buffer is too small
> Jan 06 22:54:53   INFO [main] local_vdi_state_snapshot_ctl(1388) getting vdi
> state snapshot at epoch 1
> Jan 06 22:54:53   INFO [main] get_vdi_state_snapshot(1783) maximum allowed
> length: 4096, required length: 4260
> Jan 06 22:54:53  ERROR [main] local_vdi_state_snapshot_ctl(1397) failed to
> get vdi state snapshot: The buffer is too small
> Jan 06 22:54:53   INFO [main] local_vdi_state_snapshot_ctl(1388) getting vdi
> state snapshot at epoch 1
> Jan 06 22:54:53   INFO [main] local_vdi_state_snapshot_ctl(1388) freeing vdi
> state snapshot at epoch 1
> Jan 06 22:56:13   INFO [main] cluster_lock_vdi_main(1349) node: IPv4
> ip:10.0.0.5 port:7000 is locking VDI (type:
> normal): d63538
> Jan 06 22:56:13   INFO [main] vdi_lock(454) VDI d63538 is already locked
> Jan 06 22:56:13  ERROR [main] cluster_lock_vdi_main(1352) locking
> d63538failed
> Jan 06 22:56:13  ERROR [io 30123] err_to_sderr(101)
> /xfs-drive1/sheepdog/obj/.stale corrupted
> ...
> - logs on all other nodes show this
> Jan 06 22:17:44   INFO [main] vdi_lock(450) VDI d63538 is locked
> Jan 06 22:54:53   INFO [main] local_vdi_state_snapshot_ctl(1388) freeing vdi
> state snapshot at epoch 1
> Jan 06 22:56:13   INFO [main] cluster_lock_vdi_main(1349) node: IPv4
> ip:10.0.0.5 port:7000 is locking VDI (type:
> normal): d63538
> Jan 06 22:56:13   INFO [main] vdi_lock(454) VDI d63538 is already locked
> Jan 06 22:56:13  ERROR [main] cluster_lock_vdi_main(1352) locking
> d63538failed
> Jan 06 22:56:13  ERROR [io 11612] err_to_sderr(101)
> /xfs-drive1/sheepdog/obj/.stale corrupted
> ...
>
> I wonder why all nodes (except the one where I killed sheep) show
> "/xfs-drive1/sheepdog/obj/.stale corrupted" errors in
> their logs?
>
> Why does the failed node after restart output messages like "The buffer is
> too small"?
>
> Thank you in advance!
>
> Corin
>




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