Test case: zfs_destroy_010_pos

[behlendorf]

System information

Type	Version/Name
Distribution Name	all
Distribution Version	all
Linux Kernel	all
Architecture	all
ZFS Version	0.7.0-rc3
SPL Version	0.7.0-rc3

Describe the problem you're observing

Rare failure of test case zfs_destroy_010_pos due to an EBUSY error.

Describe how to reproduce the problem

Reproducible occasionally by the automated testing.

Include any warning/errors/backtraces from the system logs

http://build.zfsonlinux.org/builders/Ubuntu%2016.04%20x86_64%20Kmemleak%20%28TEST%29/builds/942/steps/shell_9/logs/log

Test: /usr/share/zfs/zfs-tests/tests/functional/cli_root/zfs_destroy/zfs_destroy_010_pos (run as root) [00:04] [FAIL]
23:05:12.66 ASSERTION: 'zfs destroy -R' works on deferred destroyed snapshots
23:05:12.80 SUCCESS: /sbin/zfs create testpool.26279/testctr26279
23:05:12.96 SUCCESS: /sbin/zfs create testpool.26279/testctr26279/testfs.26279
23:05:13.09 SUCCESS: /sbin/zfs create -V 150m testpool.26279/testctr26279/testvol26279
23:05:15.66 NOTE: SUCCESS: /sbin/mke2fs /dev/zvol/testpool.26279/testctr26279/testvol26279>/dev/null
23:05:15.66 SUCCESS: /bin/mkdir /var/tmp/testdir126279
23:05:15.72 SUCCESS: /bin/mount /dev/zvol/testpool.26279/testctr26279/testvol26279 /var/tmp/testdir126279
23:05:15.77 SUCCESS: /sbin/zfs snapshot testpool.26279/testctr26279/testfs.26279@testsnap26279
23:05:15.84 SUCCESS: /sbin/zfs snapshot testpool.26279/testctr26279/testvol26279@testsnap26279
23:05:16.02 SUCCESS: /sbin/zfs clone testpool.26279/testctr26279/testfs.26279@testsnap26279 testpool.26279/testfs.26279clone
23:05:16.10 SUCCESS: /sbin/zfs clone testpool.26279/testctr26279/testvol26279@testsnap26279 testpool.26279/testvol26279clone
23:05:16.15 SUCCESS: /sbin/zfs destroy -d testpool.26279/testctr26279/testfs.26279@testsnap26279
23:05:16.18 SUCCESS: datasetexists testpool.26279/testctr26279/testfs.26279@testsnap26279
23:05:16.22 cannot destroy 'testpool.26279/testfs.26279clone': dataset is busy
23:05:16.22 ERROR: /sbin/zfs destroy -R testpool.26279/testfs.26279clone exited 1
23:05:16.23 NOTE: Performing local cleanup via log_onexit (cleanup_testenv)
23:05:16.29 SUCCESS: /bin/umount -f /var/tmp/testdir126279
23:05:16.29 SUCCESS: rm -f -rf /var/tmp/testdir126279
23:05:16.89 SUCCESS: /sbin/zfs destroy -Rf testpool.26279/testctr26279

[stale]

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