Enable additional test cases #6095
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@behlendorf, thanks for your PR! By analyzing the history of the files in this pull request, we identified @jwk404, @loli10K and @ahrens to be potential reviewers. |
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tests/runfiles/linux.run
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| # zpool_create_015_neg - swap devices | ||
| # zpool_create_016_pos - no dumadm command. | ||
| # zpool_create_020_pos - needs investigation | ||
| [tests/functional/cli_root/zpool_create] |
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Warning: Test 'zpool_create_*' removed from TestGroup '/usr/share/zfs/zfs-tests/tests/functional/cli_root/zpool_clear' because it failed verification.
It took me a while to realize the cause: without [tests/functional/cli_root/zpool_create] all these tests are now part of the zpool_clear group.
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Thanks. Fixed in the updated PR. |
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Enable additional test cases, in most cases this required a few minor modifications to the test scripts. In a few cases a real bug was uncovered and fixed. And in a handful of cases where pools are layered on pools the test case will be skipped until this is supported. Details below for each test case. * zpool_add_004_pos - Skip test on Linux until adding zvols to pools is fully supported and deadlock free. * zpool_add_005_pos.ksh - Skip dumpadm portion of the test which isn't relevant for Linux. The find_vfstab_dev, find_mnttab_dev, and save_dump_dev functions were updated accordingly for Linux. * zpool_add_006_pos - Update test case such that it doesn't depend on nested pools. Switch to truncate from mkfile to reduce space requirements and speed up the test case. * zpool_clear_001_pos - Speed up test case by filling filesystem to 25% capacity. * zpool_create_002_pos, zpool_create_004_pos - Use sparse files for file vdevs in order to avoid increasing the partition size. * zpool_create_006_pos - 6ba1ce9 allows raidz+mirror configs with similar redundancy. Updating the valid_args and forced_args cases. * zpool_create_008_pos - Disable overlapping partition portion. * zpool_create_011_neg - Fix to correctly create the extra partition. Modified zpool_vdev.c to use fstat64_blk() wrapper which includes the st_size even for block devices. * zpool_create_012_neg - Updated to properly find swap devices. * zpool_create_014_neg, zpool_create_015_neg - Updated to use swap_setup() and swap_cleanup() wrappers which do the right thing on Linux and Illumos. Removed '-n' option which successed under Linux due to differences in the inuse checks. * zpool_create_016_pos.ksh - Skipped test case isn't useful. * zpool_create_020_pos - Added missing / to cleanup() function. Remove cache file prior to test to ensure a clean environment and avoid false positives. * zpool_destroy_001_pos - Removed test case which creates a pool on a zvol. This is more likely to deadlock under Linux and has never been completely supported on any platform. * zpool_destroy_002_pos - 'zpool destroy -f' is unsupported on Linux. Mount point must not be busy in order to unmount them. * zfs_destroy_001_pos - Handle EBUSY error which can occur with volumes when racing with udev. * zpool_expand_001_pos, zpool_expand_003_neg - Skip test on Linux until adding zvols to pools is fully supported and deadlock free. The test could be modified to use loopback devices but it would be preerable to use the test case as is for improved coverage. * zpool_export_004_pos - Updated test case to such that it doesn't depend on nested pools. Normal file vdev under /var/tmp are fine. * zpool_import_all_001_pos - Updated to skip partition 1, which is known as slice 2, on Illumos. This prevents overwritting the default TESTPOOL which was causing the failure. * zpool_import_002_pos, zpool_import_012_pos - No changes needed. * zpool_remove_003_pos - No changes needed * zpool_upgrade_002_pos, zpool_upgrade_004_pos - Root cause addressed by upstream OpenZFS commit 3b7f360. * zpool_upgrade_007_pos - Disabled in test case due to known failure. Opened issue openzfs#6112 * zvol_misc_002_pos - Updated to to use ext2. * zvol_misc_001_neg, zvol_misc_003_neg, zvol_misc_004_pos, zvol_misc_005_neg, zvol_misc_006_pos - Moved to skip list, thesei test case could be updated to use Linux's crash dump facility. * zvol_swap_* - Updated to use swap_setup/swap_cleanup helpers. File creation switched from /tmp to /var/tmp. Enabled minimal useful tests for Linux, skip test cases which aren't applicable. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue openzfs#3484 Issue openzfs#5634 Issue openzfs#2437 Issue openzfs#5202 Issue openzfs#4034 Issue openzfs#6095
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Enable additional test cases, in most cases this required a few minor modifications to the test scripts. In a few cases a real bug was uncovered and fixed. And in a handful of cases where pools are layered on pools the test case will be skipped until this is supported. Details below for each test case. * zpool_add_004_pos - Skip test on Linux until adding zvols to pools is fully supported and deadlock free. * zpool_add_005_pos.ksh - Skip dumpadm portion of the test which isn't relevant for Linux. The find_vfstab_dev, find_mnttab_dev, and save_dump_dev functions were updated accordingly for Linux. * zpool_add_006_pos - Update test case such that it doesn't depend on nested pools. Switch to truncate from mkfile to reduce space requirements and speed up the test case. * zpool_clear_001_pos - Speed up test case by filling filesystem to 25% capacity. * zpool_create_002_pos, zpool_create_004_pos - Use sparse files for file vdevs in order to avoid increasing the partition size. * zpool_create_006_pos - 6ba1ce9 allows raidz+mirror configs with similar redundancy. Updating the valid_args and forced_args cases. * zpool_create_008_pos - Disable overlapping partition portion. * zpool_create_011_neg - Fix to correctly create the extra partition. Modified zpool_vdev.c to use fstat64_blk() wrapper which includes the st_size even for block devices. * zpool_create_012_neg - Updated to properly find swap devices. * zpool_create_014_neg, zpool_create_015_neg - Updated to use swap_setup() and swap_cleanup() wrappers which do the right thing on Linux and Illumos. Removed '-n' option which successed under Linux due to differences in the inuse checks. * zpool_create_016_pos.ksh - Skipped test case isn't useful. * zpool_create_020_pos - Added missing / to cleanup() function. Remove cache file prior to test to ensure a clean environment and avoid false positives. * zpool_destroy_001_pos - Removed test case which creates a pool on a zvol. This is more likely to deadlock under Linux and has never been completely supported on any platform. * zpool_destroy_002_pos - 'zpool destroy -f' is unsupported on Linux. Mount point must not be busy in order to unmount them. * zfs_destroy_001_pos - Handle EBUSY error which can occur with volumes when racing with udev. * zpool_expand_001_pos, zpool_expand_003_neg - Skip test on Linux until adding zvols to pools is fully supported and deadlock free. The test could be modified to use loopback devices but it would be preerable to use the test case as is for improved coverage. * zpool_export_004_pos - Updated test case to such that it doesn't depend on nested pools. Normal file vdev under /var/tmp are fine. * zpool_import_all_001_pos - Updated to skip partition 1, which is known as slice 2, on Illumos. This prevents overwritting the default TESTPOOL which was causing the failure. * zpool_import_002_pos, zpool_import_012_pos - No changes needed. * zpool_remove_003_pos - No changes needed * zpool_upgrade_002_pos, zpool_upgrade_004_pos - Root cause addressed by upstream OpenZFS commit 3b7f360. * zpool_upgrade_007_pos - Disabled in test case due to known failure. Opened issue openzfs#6112 * zvol_misc_002_pos - Updated to to use ext2. * zvol_misc_001_neg, zvol_misc_003_neg, zvol_misc_004_pos, zvol_misc_005_neg, zvol_misc_006_pos - Moved to skip list, thesei test case could be updated to use Linux's crash dump facility. * zvol_swap_* - Updated to use swap_setup/swap_cleanup helpers. File creation switched from /tmp to /var/tmp. Enabled minimal useful tests for Linux, skip test cases which aren't applicable. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue openzfs#3484 Issue openzfs#5634 Issue openzfs#2437 Issue openzfs#5202 Issue openzfs#4034 Issue openzfs#6095
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Enable additional test cases, in most cases this required a few minor modifications to the test scripts. In a few cases a real bug was uncovered and fixed. And in a handful of cases where pools are layered on pools the test case will be skipped until this is supported. Details below for each test case. * zpool_add_004_pos - Skip test on Linux until adding zvols to pools is fully supported and deadlock free. * zpool_add_005_pos.ksh - Skip dumpadm portion of the test which isn't relevant for Linux. The find_vfstab_dev, find_mnttab_dev, and save_dump_dev functions were updated accordingly for Linux. * zpool_add_006_pos - Update test case such that it doesn't depend on nested pools. Switch to truncate from mkfile to reduce space requirements and speed up the test case. * zpool_clear_001_pos - Speed up test case by filling filesystem to 25% capacity. * zpool_create_002_pos, zpool_create_004_pos - Use sparse files for file vdevs in order to avoid increasing the partition size. * zpool_create_006_pos - 6ba1ce9 allows raidz+mirror configs with similar redundancy. Updating the valid_args and forced_args cases. * zpool_create_008_pos - Disable overlapping partition portion. * zpool_create_011_neg - Fix to correctly create the extra partition. Modified zpool_vdev.c to use fstat64_blk() wrapper which includes the st_size even for block devices. * zpool_create_012_neg - Updated to properly find swap devices. * zpool_create_014_neg, zpool_create_015_neg - Updated to use swap_setup() and swap_cleanup() wrappers which do the right thing on Linux and Illumos. Removed '-n' option which successed under Linux due to differences in the inuse checks. * zpool_create_016_pos.ksh - Skipped test case isn't useful. * zpool_create_020_pos - Added missing / to cleanup() function. Remove cache file prior to test to ensure a clean environment and avoid false positives. * zpool_destroy_001_pos - Removed test case which creates a pool on a zvol. This is more likely to deadlock under Linux and has never been completely supported on any platform. * zpool_destroy_002_pos - 'zpool destroy -f' is unsupported on Linux. Mount point must not be busy in order to unmount them. * zfs_destroy_001_pos - Handle EBUSY error which can occur with volumes when racing with udev. * zpool_expand_001_pos, zpool_expand_003_neg - Skip test on Linux until adding zvols to pools is fully supported and deadlock free. The test could be modified to use loopback devices but it would be preerable to use the test case as is for improved coverage. * zpool_export_004_pos - Updated test case to such that it doesn't depend on nested pools. Normal file vdev under /var/tmp are fine. * zpool_import_all_001_pos - Updated to skip partition 1, which is known as slice 2, on Illumos. This prevents overwritting the default TESTPOOL which was causing the failure. * zpool_import_002_pos, zpool_import_012_pos - No changes needed. * zpool_remove_003_pos - No changes needed * zpool_upgrade_002_pos, zpool_upgrade_004_pos - Root cause addressed by upstream OpenZFS commit 3b7f360. * zpool_upgrade_007_pos - Disabled in test case due to known failure. Opened issue openzfs#6112 * zvol_misc_002_pos - Updated to to use ext2. * zvol_misc_001_neg, zvol_misc_003_neg, zvol_misc_004_pos, zvol_misc_005_neg, zvol_misc_006_pos - Moved to skip list, thesei test case could be updated to use Linux's crash dump facility. * zvol_swap_* - Updated to use swap_setup/swap_cleanup helpers. File creation switched from /tmp to /var/tmp. Enabled minimal useful tests for Linux, skip test cases which aren't applicable. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue openzfs#3484 Issue openzfs#5634 Issue openzfs#2437 Issue openzfs#5202 Issue openzfs#4034 Issue openzfs#6095
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Enable additional test cases, in most cases this required a few minor modifications to the test scripts. In a few cases a real bug was uncovered and fixed. And in a handful of cases where pools are layered on pools the test case will be skipped until this is supported. Details below for each test case. * zpool_add_004_pos - Skip test on Linux until adding zvols to pools is fully supported and deadlock free. * zpool_add_005_pos.ksh - Skip dumpadm portion of the test which isn't relevant for Linux. The find_vfstab_dev, find_mnttab_dev, and save_dump_dev functions were updated accordingly for Linux. Add O_EXCL to the in-use check to prevent the -f (force) option from working for mounted filesystems and improve the resulting error. * zpool_add_006_pos - Update test case such that it doesn't depend on nested pools. Switch to truncate from mkfile to reduce space requirements and speed up the test case. * zpool_clear_001_pos - Speed up test case by filling filesystem to 25% capacity. * zpool_create_002_pos, zpool_create_004_pos - Use sparse files for file vdevs in order to avoid increasing the partition size. * zpool_create_006_pos - 6ba1ce9 allows raidz+mirror configs with similar redundancy. Updating the valid_args and forced_args cases. * zpool_create_008_pos - Disable overlapping partition portion. * zpool_create_011_neg - Fix to correctly create the extra partition. Modified zpool_vdev.c to use fstat64_blk() wrapper which includes the st_size even for block devices. * zpool_create_012_neg - Updated to properly find swap devices. * zpool_create_014_neg, zpool_create_015_neg - Updated to use swap_setup() and swap_cleanup() wrappers which do the right thing on Linux and Illumos. Removed '-n' option which successed under Linux due to differences in the inuse checks. * zpool_create_016_pos.ksh - Skipped test case isn't useful. * zpool_create_020_pos - Added missing / to cleanup() function. Remove cache file prior to test to ensure a clean environment and avoid false positives. * zpool_destroy_001_pos - Removed test case which creates a pool on a zvol. This is more likely to deadlock under Linux and has never been completely supported on any platform. * zpool_destroy_002_pos - 'zpool destroy -f' is unsupported on Linux. Mount point must not be busy in order to unmount them. * zfs_destroy_001_pos - Handle EBUSY error which can occur with volumes when racing with udev. * zpool_expand_001_pos, zpool_expand_003_neg - Skip test on Linux until adding zvols to pools is fully supported and deadlock free. The test could be modified to use loopback devices but it would be preerable to use the test case as is for improved coverage. * zpool_export_004_pos - Updated test case to such that it doesn't depend on nested pools. Normal file vdev under /var/tmp are fine. * zpool_import_all_001_pos - Updated to skip partition 1, which is known as slice 2, on Illumos. This prevents overwritting the default TESTPOOL which was causing the failure. * zpool_import_002_pos, zpool_import_012_pos - No changes needed. * zpool_remove_003_pos - No changes needed * zpool_upgrade_002_pos, zpool_upgrade_004_pos - Root cause addressed by upstream OpenZFS commit 3b7f360. * zpool_upgrade_007_pos - Disabled in test case due to known failure. Opened issue openzfs#6112 * zvol_misc_002_pos - Updated to to use ext2. * zvol_misc_001_neg, zvol_misc_003_neg, zvol_misc_004_pos, zvol_misc_005_neg, zvol_misc_006_pos - Moved to skip list, thesei test case could be updated to use Linux's crash dump facility. * zvol_swap_* - Updated to use swap_setup/swap_cleanup helpers. File creation switched from /tmp to /var/tmp. Enabled minimal useful tests for Linux, skip test cases which aren't applicable. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue openzfs#3484 Issue openzfs#5634 Issue openzfs#2437 Issue openzfs#5202 Issue openzfs#4034 Issue openzfs#6095
loli10K
reviewed
May 11, 2017
| # Fully fill up the zfs filesystem in order to make data block errors | ||
| # zfs filesystem | ||
| # Partially fill up the zfs filesystem in order to make data block | ||
| # errors. It's not nessisary to fill the entire filesystem. |
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nit: s/nessisary/necessary/
| typeset swapdev=$1 | ||
|
|
||
| if is_linux; then | ||
| log_must mkswap $swapdev 2>/dev/null 2>&1 |
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nit: s@2>/dev/null@> /dev/null@
| @@ -111,6 +111,11 @@ for dir in $TESTDIR /$TESTPOOL/$TESTCTR /$TESTPOOL/$TESTCTR/$TESTFS1 ; do | |||
| done | |||
| done | |||
|
|
|||
| # 4. 'zpool destroy -f' the pool (unsupported behavior in Linux) | |||
| if is_linux; then | |||
| log_must cd /tmp | |||
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Can we log_must cd $cwd here? The cleanup functions does that too.
| @@ -52,7 +52,7 @@ verify_runnable "global" | |||
|
|
|||
| function cleanup | |||
| { | |||
| mntpnt=$(get_prop mountpoint $TESTPOOL) | |||
| mntpnt=$TESTDIR0 | |||
| datasetexists $TESTPOOL1 || log_must zpool import -d $mntpnt $TESTPOOL1 | |||
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nit: spaces instead of tab
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Enable additional test cases, in most cases this required a few minor modifications to the test scripts. In a few cases a real bug was uncovered and fixed. And in a handful of cases where pools are layered on pools the test case will be skipped until this is supported. Details below for each test case. * zpool_add_004_pos - Skip test on Linux until adding zvols to pools is fully supported and deadlock free. * zpool_add_005_pos.ksh - Skip dumpadm portion of the test which isn't relevant for Linux. The find_vfstab_dev, find_mnttab_dev, and save_dump_dev functions were updated accordingly for Linux. Add O_EXCL to the in-use check to prevent the -f (force) option from working for mounted filesystems and improve the resulting error. * zpool_add_006_pos - Update test case such that it doesn't depend on nested pools. Switch to truncate from mkfile to reduce space requirements and speed up the test case. * zpool_clear_001_pos - Speed up test case by filling filesystem to 25% capacity. * zpool_create_002_pos, zpool_create_004_pos - Use sparse files for file vdevs in order to avoid increasing the partition size. * zpool_create_006_pos - 6ba1ce9 allows raidz+mirror configs with similar redundancy. Updating the valid_args and forced_args cases. * zpool_create_008_pos - Disable overlapping partition portion. * zpool_create_011_neg - Fix to correctly create the extra partition. Modified zpool_vdev.c to use fstat64_blk() wrapper which includes the st_size even for block devices. * zpool_create_012_neg - Updated to properly find swap devices. * zpool_create_014_neg, zpool_create_015_neg - Updated to use swap_setup() and swap_cleanup() wrappers which do the right thing on Linux and Illumos. Removed '-n' option which successed under Linux due to differences in the inuse checks. * zpool_create_016_pos.ksh - Skipped test case isn't useful. * zpool_create_020_pos - Added missing / to cleanup() function. Remove cache file prior to test to ensure a clean environment and avoid false positives. * zpool_destroy_001_pos - Removed test case which creates a pool on a zvol. This is more likely to deadlock under Linux and has never been completely supported on any platform. * zpool_destroy_002_pos - 'zpool destroy -f' is unsupported on Linux. Mount point must not be busy in order to unmount them. * zfs_destroy_001_pos - Handle EBUSY error which can occur with volumes when racing with udev. * zpool_expand_001_pos, zpool_expand_003_neg - Skip test on Linux until adding zvols to pools is fully supported and deadlock free. The test could be modified to use loopback devices but it would be preerable to use the test case as is for improved coverage. * zpool_export_004_pos - Updated test case to such that it doesn't depend on nested pools. Normal file vdev under /var/tmp are fine. * zpool_import_all_001_pos - Updated to skip partition 1, which is known as slice 2, on Illumos. This prevents overwritting the default TESTPOOL which was causing the failure. * zpool_import_002_pos, zpool_import_012_pos - No changes needed. * zpool_remove_003_pos - No changes needed * zpool_upgrade_002_pos, zpool_upgrade_004_pos - Root cause addressed by upstream OpenZFS commit 3b7f360. * zpool_upgrade_007_pos - Disabled in test case due to known failure. Opened issue openzfs#6112 * zvol_misc_002_pos - Updated to to use ext2. * zvol_misc_001_neg, zvol_misc_003_neg, zvol_misc_004_pos, zvol_misc_005_neg, zvol_misc_006_pos - Moved to skip list, thesei test case could be updated to use Linux's crash dump facility. * zvol_swap_* - Updated to use swap_setup/swap_cleanup helpers. File creation switched from /tmp to /var/tmp. Enabled minimal useful tests for Linux, skip test cases which aren't applicable. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue openzfs#3484 Issue openzfs#5634 Issue openzfs#2437 Issue openzfs#5202 Issue openzfs#4034 Issue openzfs#6095
|
Refreshed. All TEST builders are expected to pass except for kmemleak which was detecting a small leak which may be more common with the additional test cases enabled. @loli10K please go ahead and approve this if you're happy with the updated patch. I'd love to get this merged to resolve many of the occasional automated test failures. |
loli10K
approved these changes
May 11, 2017
dinatale2
approved these changes
May 11, 2017
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Enable additional test cases, in most cases this required a few
minor modifications to the test scripts. In a few cases a real
bug was uncovered and fixed. And in a handful of cases where pools
are layered on pools the test case will be skipped until this is
supported. Details below for each test case.
zpool_add_004_pos - Skip test on Linux until adding zvols to pools
is fully supported and deadlock free.
zpool_add_005_pos.ksh - Skip dumpadm portion of the test which isn't
relevant for Linux. The find_vfstab_dev, find_mnttab_dev, and
save_dump_dev functions were updated accordingly for Linux.
zpool_add_006_pos - Update test case such that it doesn't depend
on nested pools. Switch to truncate from mkfile to reduce space
requirements and speed up the test case.
zpool_clear_001_pos - Speed up test case by filling filesystem to
25% capacity.
zpool_create_002_pos, zpool_create_004_pos - Use sparse files for
file vdevs in order to avoid increasing the partition size.
zpool_create_006_pos - 6ba1ce9 allows raidz+mirror configs with
bug was uncovered and fixed. And in a handful of cases where pools
are layered on pools the test case will be skipped until this is
supported. Details below for each test case.
zpool_add_004_pos - Skip test on Linux until adding zvols to pools
is fully supported and deadlock free.
zpool_add_005_pos.ksh - Skip dumpadm portion of the test which isn't
relevant for Linux. The find_vfstab_dev, find_mnttab_dev, and
save_dump_dev functions were updated accordingly for Linux.
zpool_add_006_pos - Update test case such that it doesn't depend
on nested pools. Switch to truncate from mkfile to reduce space
requirements and speed up the test case.
zpool_clear_001_pos - Speed up test case by filling filesystem to
25% capacity.
zpool_create_002_pos, zpool_create_004_pos - Use sparse files for
file vdevs in order to avoid increasing the partition size.
zpool_create_006_pos - 6ba1ce9 allows raidz+mirror configs with
similar redundancy. Updating the valid_args and forced_args cases.
zpool_create_008_pos - Disable overlapping partition portion.
zpool_create_011_neg - Fix to correctly create the extra partition.
Modified zpool_vdev.c to use fstat64_blk() wrapper which includes
the st_size even for block devices.
zpool_create_012_neg - Updated to properly find swap devices.
zpool_create_014_neg, zpool_create_015_neg - Updated to use
swap_setup() and swap_cleanup() wrappers which do the right thing
on Linux and Illumos. Removed '-n' option which successed under
Linux due to differences in the inuse checks.
zpool_create_016_pos.ksh - Skipped test case isn't useful.
zpool_create_020_pos - Added missing / to cleanup() function.
Remove cache file prior to test to ensure a clean environment
and avoid false positives.
zpool_destroy_001_pos - Removed test case which creates a pool on
a zvol. This is more likely to deadlock under Linux and has never
been completely supported on any platform.
zpool_destroy_002_pos - 'zpool destroy -f' is unsupported on Linux.
Mount point must not be busy in order to unmount them.
zfs_destroy_001_pos - Handle EBUSY error which can occur with
volumes when racing with udev.
zpool_expand_001_pos, zpool_expand_003_neg - Skip test on Linux
until adding zvols to pools is fully supported and deadlock free.
The test could be modified to use loopback devices but it would
be preerable to use the test case as is for improved coverage.
zpool_export_004_pos - Updated test case to such that it doesn't
depend on nested pools. Normal file vdev under /var/tmp are fine.
zpool_import_all_001_pos - Updated to skip partition 1, which is
known as slice 2, on Illumos. This prevents overwritting the
default TESTPOOL which was causing the failure.
zpool_import_002_pos, zpool_import_012_pos - No changes needed.
zpool_remove_003_pos - No changes needed
zpool_upgrade_002_pos, zpool_upgrade_004_pos - Root cause addressed
by upstream OpenZFS commit 3b7f360.
zpool_upgrade_007_pos - Disabled in test case due to known failure.
Opened issue Test case: zpool_upgrade_007_pos #6112
zvol_misc_002_pos - Updated to to use ext2.
zvol_misc_001_neg, zvol_misc_003_neg, zvol_misc_004_pos,
zvol_misc_005_neg, zvol_misc_006_pos - Moved to skip list, thesei
test case could be updated to use Linux's crash dump facility.
zvol_swap_* - Updated to use swap_setup/swap_cleanup helpers.
File creation switched from /tmp to /var/tmp. Enabled minimal
useful tests for Linux, skip test cases which aren't applicable.
NOTE: This ended up larger than I originally intended but I'd prefer to avoid to breaking this in to N individual patches. Each fix here should still be relatively easy to review and comment on as they are mostly self contained in their respective test cases. 38 additional test cases have been enabled.