Details
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Type:
Bug
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Status: Resolved
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Priority:
Major - P3
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Resolution: Fixed
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Affects Version/s: None
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Fix Version/s: WT2.9.0
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Labels:None
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# Replies:11
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Last comment by Customer:true
Description
WiredTiger caches file handles at two levels, in the block manager and in the OS layer.
Neither cache prevents attempt to open a read/write handle from finding and using an existing readonly handle.
Issue Links
Activity
Author:
{u'name': u'Ramon Fernandez', u'email': u'ramon@mongodb.com'}Message: Import wiredtiger-wiredtiger-2.8.0-410-g636a7b2.tar.gz from wiredtiger branch mongodb-3.4
ref: eaa7b5f..636a7b2
WT-2103 add incremental backup testing to format
WT-2223 Add stress testing for in-memory
WT-2343 Assert we don't remove or rename when backup cursor is open
WT-2349 Add ability to open databases read-only
WT-2359 WiredTiger with Python will hang if a calloc failure occurs during __wt_connection_close
WT-2360 Allow disjunctions and combinations of operations in join cursors
WT-2446 Estimate WT cache hit ratio
WT-2450 salvage releases pages, then explicitly evicts them.
WT-2453 Throughput drop in wtperf evict Jenkins tests
WT-2479 dump utility discards table config (JSON)
WT-2504 Should READONLY always read basecfg file?
WT-2505 Review clang analyzer warnings
WT-2508 test programs should remove test directories on the "clean" target
WT-2518 LSM checkpoint handle acquisition optimization
WT-2520 WT_SESSION::verify should not alter tables
WT-2526 mixing and matching readonly and read/write handles
WT-2535 Extend test/format to test for transactions reading their writes
WT-2537 cannot open DB written by WT2.6.1 with WT2.8.0 due to WT_NOTFOUND on recovery
WT-2539 Implement file streaming above pluggable filesystems
WT-2540 Separate stream and file handle methods
WT-2542 fixed-length column store reconciliation overwrites original values
WT-2544 Investigate any thread populating eviction queue
WT-2546 Eviction server not help evict pages sometimes
WT-2547 Add 1-eviction-worker jobs to Jenkins
WT-2548 Cap the amount of data handed to raw compression.
WT-2549 joins using recno keys return no values
WT-2550 java ex_schema example fails
WT-2552 Public API for pluggable filesystems
WT-2553 Document in-memory configuration and WT_CACHE_FULL error return
WT-2556 typo in the Java example code
WT-2557 format test program should discard log files after incremental backup
WT-2558 WT_PAGE structure reorganization
WT-2559 Jenkins Windows segfault in logging code
WT-2560 test/format workload stuck trying to update oldest transaction ID
WT-2562 reconfig02 test failing sometimes on PPC
WT-2565 item 3573 on page at [write-check] is a corrupted cell
WT-2566 All lock operations should be barriers
WT-2567 segfault in test/format log truncate
WT-2568 Java PackTest.java compilation error
WT-2569 win_handle_read should always call GetLastError on error
WT-2570 Minor lint cleanups.
WT-2571 join code cleanup
WT-2572 don't select an in-memory format run if incompatible options configured
WT-2573 free of stack-allocated WT_REF
WT-2574 format doesn't free all allocated configure memory
WT-2576 variable-length column-store out-of-order return
WT-2577 core dump discarding non-existent addresses
WT-2579 in-memory configurations break debugging support
WT-2580 potential SWIG naming conflict in Java
WT-2581 assert multi->disk_image == NULL
WT-2582 cache eviction server error: WT_RESTART
WT-2583 incremental backup can prevent future recovery
WT-2584 don't use periods in error messages
WT-2586 Remove ex_config.c until config cursors are supported
WT-2592 Joins using non-recno key types not working
WT-2593 disk full with pre-allocated log files
WT-2595 Fix compiler warning in packing tests
WT-2598 in-memory FS needs fast lookup on file names
WT-2599 split out the checksum code from the support directory
WT-2600 clean up test program #includes
WT-2602 LSM stress hangs with very large uncompressed pages
WT-2609 Incorrect "skips API_END call" error.
WT-2612 The dist/s_prototypes script is creating a debugging file xxx.
WT-2613 WT Compile windows Alt is returning a C4100 error
WT-2615 Enabling checkpoints in test/format leads to reduced concurrency
WT-2616 In-memory deadlock getting size
WT-2621 WiredTiger fails to compile on MSVC 2013
SERVER-23661 $sample takes disproportionately long time on newly created collection
SERVER-23904 WiredTiger changes for MongoDB 3.3.6
Branch: master
https://github.com/mongodb/mongo/commit/150aa821caa327529a0996793c55a6b2e74acaf8
Author:
{u'username': u'keithbostic', u'name': u'Keith Bostic', u'email': u'keith@wiredtiger.com'}Message: WT-2526: mixing and matching readonly and read/write handles
Change WiredTiger to always open handles in read/write mode unless the
database itself is configured read-only. The WT_OPEN_READONLY flag is
now OS-specific, and not used above that level.
Requires the creation of a new open flag, WT_OPEN_DIRECTIO: this flag
is set in the OS layer, based on how the connection is configured. It
is also set in the block-manager layer, because that's the only place
we know we're opening a read-only data file (required for support of
the "direct_io=checkpoint" configuration).
Branch: mongodb-3.2
https://github.com/wiredtiger/wiredtiger/commit/5b34fb2eed8ba6f5b6e925d689ecb3413bad130a
Author:
{u'username': u'michaelcahill', u'name': u'Michael Cahill', u'email': u'michael.cahill@mongodb.com'}Message: Merge pull request #2632 from wiredtiger/wt-2526
WT-2526: mixing and matching readonly and read/write handles
Branch: mongodb-3.2
https://github.com/wiredtiger/wiredtiger/commit/9b800caa9d9305cf0e772128550267da028b8a15
Author:
{u'name': u'Ramon Fernandez', u'email': u'ramon@mongodb.com'}Message: Import wiredtiger-wiredtiger-2.8.0-592-g848e5f5.tar.gz from wiredtiger branch mongodb-3.2
ref: 8b7110b..848e5f5
for: 3.2.9
This commit replaces a number of previous backports with the original
change, so some of the tickets listed below may have been resolved in
previous versions already as a backport to the v3.2 branch. For example,
SERVER-24580 includes change a63e21b8 as a cherry-pick of 1f4aaa44, but
this commit replaces that change with 1f4aaa44 itself.
SERVER-23659 Provide useful message when wiredTigerJournalCompressor is changed
SERVER-23661 $sample takes disproportionately long time on newly created collection
SERVER-24306 40-second journaling stall from "log files prepared" to checkpoint
SERVER-24580 Improve performance when WiredTiger cache is full
WT-2103 Add incremental backup testing to format
WT-2223 Add stress testing for in-memory
WT-2268 JSON load incorrect with UNICODE input
WT-2319 Add statistics around fsync calls
WT-2325 Fix an incomplete comment
WT-2343 Assert we don't remove or rename when backup cursor is open
WT-2349 Add ability to open databases read-only
WT-2359 WiredTiger with Python will hang if a calloc failure occurs during __wt_connection_close
WT-2360 Allow disjunctions and combinations of operations in join cursors
WT-2408 Windows error translation layer
WT-2446 Estimate WT cache hit ratio
WT-2450 Salvage releases pages, then explicitly evicts them.
WT-2453 Throughput drop in wtperf evict Jenkins tests
WT-2479 Dump utility discards table config (JSON)
WT-2491 The dhandle close_lock isn't valuable at the moment
WT-2504 Should READONLY always read basecfg file?
WT-2505 Review clang analyzer warnings
WT-2508 Test programs should remove test directories on the "clean" target
WT-2514 Log path name is an empty string.
WT-2518 LSM checkpoint handle acquisition optimization
WT-2520 WT_SESSION::verify should not alter tables
WT-2526 Mixing and matching readonly and read/write handles
WT-2535 Extend test/format to test for transactions reading their writes
WT-2537 Cannot open DB written by WT2.6.1 with WT2.8.0 due to WT_NOTFOUND on recovery
WT-2539 Implement file streaming above pluggable filesystems
WT-2540 Separate stream and file handle methods
WT-2541 Add statistics for number of threads currently in read/write
WT-2542 Fixed-length column store reconciliation overwrites original values
WT-2544 Fix eviction statistics when clear is configured
WT-2546 Eviction server not help evict pages sometimes
WT-2547 Add 1-eviction-worker jobs to Jenkins
WT-2548 Cap the amount of data handed to raw compression.
WT-2549 joins using recno keys return no values
WT-2550 java ex_schema example fails
WT-2552 Public API for pluggable filesystems
WT-2553 Document in-memory configuration and WT_CACHE_FULL error return
WT-2554 Implement a framework for adding C test cases
WT-2556 Typo in the Java example code
WT-2557 format test program should discard log files after incremental backup
WT-2558 WT_PAGE structure reorganization
WT-2559 Windows segfault in logging code
WT-2560 Stuck trying to update oldest transaction ID
WT-2562 Reconfig02 test failing sometimes on PPC
WT-2565 Item 3573 on page at [write-check] is a corrupted cell
WT-2566 All lock operations should be barriers
WT-2567 Segfault in test/format log truncate
WT-2568 Java PackTest.java compilation error
WT-2569 Win_handle_read should always call GetLastError on error
WT-2570 Minor lint cleanups.
WT-2571 Join code cleanup
WT-2572 Don't select an in-memory format run if incompatible options configured
WT-2573 Free of stack-allocated WT_REF
WT-2574 Format doesn't free all allocated configure memory
WT-2576 Variable-length column-store out-of-order return
WT-2577 Core dump discarding non-existent addresses
WT-2579 In-memory configurations break debugging support
WT-2580 Potential SWIG naming conflict in Java
WT-2581 Assert multi->disk_image == NULL
WT-2582 Cache eviction server error: WT_RESTART
WT-2583 Incremental backup can prevent future recovery
WT-2584 Don't use periods in error messages
WT-2586 Remove ex_config.c until config cursors are supported
WT-2589 Check stats using WT_STAT_SET and 'clear' usage
WT-2592 Joins using non-recno key types not working
WT-2593 Disk full with pre-allocated log files
WT-2595 Fix compiler warning in packing tests
WT-2597 JSON dump needs LSM tests
WT-2598 In-memory FS needs fast lookup on file names
WT-2599 Split out the checksum code from the support directory
WT-2600 Clean up test program #includes
WT-2602 LSM stress hangs with very large uncompressed pages
WT-2605 C tests focused on different schema types needed for join and other APIs
WT-2609 Incorrect "skips API_END call" error.
WT-2610 Investigate eviction hazard pointer check
WT-2611 wtperf and/or WT_CONFIG_PARSER do not allow escaped double quotes
WT-2612 The dist/s_prototypes script is creating a debugging file xxx.
WT-2613 Windows build failing with a C4100 error
WT-2615 Enabling checkpoints in test/format leads to reduced concurrency
WT-2616 In-memory deadlock getting size
WT-2617 Bug in pluggable file system example
WT-2621 WiredTiger fails to compile on MSVC 2013
WT-2622 Unit test failed in test_cursor_random.test_cursor_random.test_cursor_random_multiple_page_records
WT-2624 snprintf unsupported on MSVC 2013
WT-2626 snprintf errors with macro redefinition on MSVC2015
WT-2627 Coverity complaints
WT-2628 Reconciliation can return without unlocking the page lock
WT-2629 Introduction of ppc64le crc32c assembly file has made the stack executable
WT-2630 Rename WT_FSTREAM methods to avoid using C99 reserved names
WT-2632 Test format failures due to "checkpoints cannot be dropped when in-use"
WT-2637 The file-extension documentation doesn't cover not-supported cases
WT-2644 'wt load -r' (rename) fails with LSM
WT-2646 Split the lock_wait flag into two, adding a checkpoint_wait flag
WT-2651 Coverity 1355591 resource leak
WT-2652 Logging code improvements
WT-2653 The custom file-system example should show device configuration
WT-2656 Builds failing on GCC 4.7 builder
WT-2658 Only include PPC-specific files in PPC builds
WT-2659 csuite tests, assorted lint and cleanup.
WT-2660 Hang between eviction and connection close
WT-2661 Coverity failures: 1356050-1356053
WT-2662 For internal spell checking, strip out double quote literals, they confuse aspell
WT-2664 Change eviction so any eviction thread can find candidates
WT-2667 Enhance WiredTiger Evergreen testing
WT-2668 Create join statistics that are useful and are easy to understand
WT-2671 Dump more information about the file layout in verify debug mode
WT-2672 Handle system calls that don't set errno
WT-2673 Stop automatically increasing memory page max
WT-2674 Simplify metadata file check
WT-2676 Don't use key size in column store in-memory splits.
WT-2677 Fix JSON output so only printable ASCII is produced (seen on Solaris)
WT-2682 Add option to configure WiredTiger with strict compiler flags
WT-2683 WiredTiger no longer needs to return non-zero disk sizes
WT-2685 Hazard pointer failure from clear walk
WT-2686 Logging subsystem core dump
WT-2687 Test suite should verify the exit status of the wt utility
WT-2689 Use after free in WT_SESSION::open_cursor
WT-2691 Use wrappers for ctype functions to avoid sign extension errors
WT-2692 Fix race in file system example
WT-2696 Race condition on unclean shutdown may miss log records with large updates
WT-2698 Test/recovery hung
WT-2702 Under high thread load, WiredTiger exceeds cache size
WT-2704 Test/format hung on bengal
WT-2706 Race condition on log file switch can cause missing log records
WT-2707 dist/s_label enhancements, and error jump cleanups
WT-2709 Connection reconfigure segfault in __wt_conn_cache_pool_destroy
WT-2710 WT_FILE_HANDLE_INMEM no longer needs an off field
WT-2712 Coverity 1356928 and 1356929: ASSERT_SIDE_EFFECT
WT-2713 Document WT_PANIC so pluggable filesystems can panic.
WT-2714 Lint
WT-2715 random-abort test may write partial record at the end
WT-2720 Pull request tester not running Python suite
WT-2722 s_label or s_label_loop false positive
WT-2724 Eviction workers created on open exit immediately
WT-2763 Unit test test_intpack failing on OSX
Branch: v3.2
https://github.com/mongodb/mongo/commit/385faa6ca72ad599d92d3948f1a2033d908e0226
Author:
{u'name': u'Ramon Fernandez', u'email': u'ramon@mongodb.com'}Message: Import wiredtiger-wiredtiger-2.8.0-592-g848e5f5.tar.gz from wiredtiger branch mongodb-3.2
ref: 8b7110b..848e5f5
for: 3.2.9
This commit replaces a number of previous backports with the original
change, so some of the tickets listed below may have been resolved in
previous versions already as a backport to the v3.2 branch. For example,
SERVER-24580 includes change a63e21b8 as a cherry-pick of 1f4aaa44, but
this commit replaces that change with 1f4aaa44 itself.
SERVER-23659 Provide useful message when wiredTigerJournalCompressor is changed
SERVER-23661 $sample takes disproportionately long time on newly created collection
SERVER-24306 40-second journaling stall from "log files prepared" to checkpoint
SERVER-24580 Improve performance when WiredTiger cache is full
WT-2103 Add incremental backup testing to format
WT-2223 Add stress testing for in-memory
WT-2268 JSON load incorrect with UNICODE input
WT-2319 Add statistics around fsync calls
WT-2325 Fix an incomplete comment
WT-2343 Assert we don't remove or rename when backup cursor is open
WT-2349 Add ability to open databases read-only
WT-2359 WiredTiger with Python will hang if a calloc failure occurs during __wt_connection_close
WT-2360 Allow disjunctions and combinations of operations in join cursors
WT-2408 Windows error translation layer
WT-2446 Estimate WT cache hit ratio
WT-2450 Salvage releases pages, then explicitly evicts them.
WT-2453 Throughput drop in wtperf evict Jenkins tests
WT-2479 Dump utility discards table config (JSON)
WT-2491 The dhandle close_lock isn't valuable at the moment
WT-2504 Should READONLY always read basecfg file?
WT-2505 Review clang analyzer warnings
WT-2508 Test programs should remove test directories on the "clean" target
WT-2514 Log path name is an empty string.
WT-2518 LSM checkpoint handle acquisition optimization
WT-2520 WT_SESSION::verify should not alter tables
WT-2526 Mixing and matching readonly and read/write handles
WT-2535 Extend test/format to test for transactions reading their writes
WT-2537 Cannot open DB written by WT2.6.1 with WT2.8.0 due to WT_NOTFOUND on recovery
WT-2539 Implement file streaming above pluggable filesystems
WT-2540 Separate stream and file handle methods
WT-2541 Add statistics for number of threads currently in read/write
WT-2542 Fixed-length column store reconciliation overwrites original values
WT-2544 Fix eviction statistics when clear is configured
WT-2546 Eviction server not help evict pages sometimes
WT-2547 Add 1-eviction-worker jobs to Jenkins
WT-2548 Cap the amount of data handed to raw compression.
WT-2549 joins using recno keys return no values
WT-2550 java ex_schema example fails
WT-2552 Public API for pluggable filesystems
WT-2553 Document in-memory configuration and WT_CACHE_FULL error return
WT-2554 Implement a framework for adding C test cases
WT-2556 Typo in the Java example code
WT-2557 format test program should discard log files after incremental backup
WT-2558 WT_PAGE structure reorganization
WT-2559 Windows segfault in logging code
WT-2560 Stuck trying to update oldest transaction ID
WT-2562 Reconfig02 test failing sometimes on PPC
WT-2565 Item 3573 on page at [write-check] is a corrupted cell
WT-2566 All lock operations should be barriers
WT-2567 Segfault in test/format log truncate
WT-2568 Java PackTest.java compilation error
WT-2569 Win_handle_read should always call GetLastError on error
WT-2570 Minor lint cleanups.
WT-2571 Join code cleanup
WT-2572 Don't select an in-memory format run if incompatible options configured
WT-2573 Free of stack-allocated WT_REF
WT-2574 Format doesn't free all allocated configure memory
WT-2576 Variable-length column-store out-of-order return
WT-2577 Core dump discarding non-existent addresses
WT-2579 In-memory configurations break debugging support
WT-2580 Potential SWIG naming conflict in Java
WT-2581 Assert multi->disk_image == NULL
WT-2582 Cache eviction server error: WT_RESTART
WT-2583 Incremental backup can prevent future recovery
WT-2584 Don't use periods in error messages
WT-2586 Remove ex_config.c until config cursors are supported
WT-2589 Check stats using WT_STAT_SET and 'clear' usage
WT-2592 Joins using non-recno key types not working
WT-2593 Disk full with pre-allocated log files
WT-2595 Fix compiler warning in packing tests
WT-2597 JSON dump needs LSM tests
WT-2598 In-memory FS needs fast lookup on file names
WT-2599 Split out the checksum code from the support directory
WT-2600 Clean up test program #includes
WT-2602 LSM stress hangs with very large uncompressed pages
WT-2605 C tests focused on different schema types needed for join and other APIs
WT-2609 Incorrect "skips API_END call" error.
WT-2610 Investigate eviction hazard pointer check
WT-2611 wtperf and/or WT_CONFIG_PARSER do not allow escaped double quotes
WT-2612 The dist/s_prototypes script is creating a debugging file xxx.
WT-2613 Windows build failing with a C4100 error
WT-2615 Enabling checkpoints in test/format leads to reduced concurrency
WT-2616 In-memory deadlock getting size
WT-2617 Bug in pluggable file system example
WT-2621 WiredTiger fails to compile on MSVC 2013
WT-2622 Unit test failed in test_cursor_random.test_cursor_random.test_cursor_random_multiple_page_records
WT-2624 snprintf unsupported on MSVC 2013
WT-2626 snprintf errors with macro redefinition on MSVC2015
WT-2627 Coverity complaints
WT-2628 Reconciliation can return without unlocking the page lock
WT-2629 Introduction of ppc64le crc32c assembly file has made the stack executable
WT-2630 Rename WT_FSTREAM methods to avoid using C99 reserved names
WT-2632 Test format failures due to "checkpoints cannot be dropped when in-use"
WT-2637 The file-extension documentation doesn't cover not-supported cases
WT-2644 'wt load -r' (rename) fails with LSM
WT-2646 Split the lock_wait flag into two, adding a checkpoint_wait flag
WT-2651 Coverity 1355591 resource leak
WT-2652 Logging code improvements
WT-2653 The custom file-system example should show device configuration
WT-2656 Builds failing on GCC 4.7 builder
WT-2658 Only include PPC-specific files in PPC builds
WT-2659 csuite tests, assorted lint and cleanup.
WT-2660 Hang between eviction and connection close
WT-2661 Coverity failures: 1356050-1356053
WT-2662 For internal spell checking, strip out double quote literals, they confuse aspell
WT-2664 Change eviction so any eviction thread can find candidates
WT-2667 Enhance WiredTiger Evergreen testing
WT-2668 Create join statistics that are useful and are easy to understand
WT-2671 Dump more information about the file layout in verify debug mode
WT-2672 Handle system calls that don't set errno
WT-2673 Stop automatically increasing memory page max
WT-2674 Simplify metadata file check
WT-2676 Don't use key size in column store in-memory splits.
WT-2677 Fix JSON output so only printable ASCII is produced (seen on Solaris)
WT-2682 Add option to configure WiredTiger with strict compiler flags
WT-2683 WiredTiger no longer needs to return non-zero disk sizes
WT-2685 Hazard pointer failure from clear walk
WT-2686 Logging subsystem core dump
WT-2687 Test suite should verify the exit status of the wt utility
WT-2689 Use after free in WT_SESSION::open_cursor
WT-2691 Use wrappers for ctype functions to avoid sign extension errors
WT-2692 Fix race in file system example
WT-2696 Race condition on unclean shutdown may miss log records with large updates
WT-2698 Test/recovery hung
WT-2702 Under high thread load, WiredTiger exceeds cache size
WT-2704 Test/format hung on bengal
WT-2706 Race condition on log file switch can cause missing log records
WT-2707 dist/s_label enhancements, and error jump cleanups
WT-2709 Connection reconfigure segfault in __wt_conn_cache_pool_destroy
WT-2710 WT_FILE_HANDLE_INMEM no longer needs an off field
WT-2712 Coverity 1356928 and 1356929: ASSERT_SIDE_EFFECT
WT-2713 Document WT_PANIC so pluggable filesystems can panic.
WT-2714 Lint
WT-2715 random-abort test may write partial record at the end
WT-2720 Pull request tester not running Python suite
WT-2722 s_label or s_label_loop false positive
WT-2724 Eviction workers created on open exit immediately
WT-2763 Unit test test_intpack failing on OSX
Branch: v3.2
https://github.com/mongodb/mongo/commit/385faa6ca72ad599d92d3948f1a2033d908e0226
Running the current test suite against a set of changes that detect read/write use of readonly handles shows 6 failures:
test_checkpoint01.test_checkpoint.test_checkpoint(file) ... ERRORtest_checkpoint01.test_checkpoint.test_checkpoint(table) ... ERRORtest_backup03.test_backup_target.test_backup_target(4) ... ERRORtest_backup03.test_backup_target.test_backup_target(8d) ... ERRORtest_backup03.test_backup_target.test_backup_target(6b) ... ERRORtest_backup03.test_backup_target.test_backup_target(9) ... ERRORThe first 2 are when __meta_btree_apply opens handles to pin them into the cache:
#0 __wt_err (session=0x806c3b040, error=1,fmt=0x805a02e6a "%s: attempt to write readonly handle")at src/support/err.c:319#1 0x0000000805891f10 in __wt_block_open (session=0x806c3b040,filename=0x801c18485 "checkpoint", cfg=0x801fdf100, forced_salvage=false,readonly=false, allocsize=512, blockp=0x801c73ee0)at src/block/block_open.c:170#2 0x0000000805890040 in __wt_block_manager_open (session=0x806c3b040,filename=0x801c18485 "checkpoint", cfg=0x801fdf100, forced_salvage=false,readonly=false, allocsize=512, bmp=0x801c6b300) at src/block/block_mgr.c:597#3 0x00000008058b7186 in __wt_btree_open (session=0x806c3b040, op_cfg=0x0)at src/btree/bt_handle.c:71#4 0x000000080591109a in __wt_conn_btree_open (session=0x806c3b040, cfg=0x0,flags=0) at src/conn/conn_dhandle.c:323#5 0x00000008059e208f in __wt_session_get_btree (session=0x806c3b040,uri=0x801c333f0 "file:checkpoint", checkpoint=0x0, cfg=0x0, flags=0)at src/session/session_dhandle.c:528#6 0x0000000805986428 in __meta_btree_apply (session=0x806c3b040,cursor=0x806cc3c00, file_func=0x8059f3fc0 <__wt_checkpoint_get_handles>,name_func=0, cfg=0x7fffffffcc30) at src/meta/meta_apply.c:44#7 0x000000080598623d in __wt_meta_apply_all (session=0x806c3b040,file_func=0x8059f3fc0 <__wt_checkpoint_get_handles>, name_func=0,cfg=0x7fffffffcc30) at src/meta/meta_apply.c:75#8 0x00000008059f8a1d in __checkpoint_apply_all (session=0x806c3b040,cfg=0x7fffffffcc30, op=0x8059f3fc0 <__wt_checkpoint_get_handles>, fullp=0x0)at src/txn/txn_ckpt.c:161#9 0x00000008059f60e1 in __txn_checkpoint (session=0x806c3b040,cfg=0x7fffffffcc30) at src/txn/txn_ckpt.c:394#10 0x00000008059f5045 in __wt_txn_checkpoint (session=0x806c3b040,cfg=0x7fffffffcc30) at src/txn/txn_ckpt.c:667#11 0x00000008059de043 in __session_checkpoint (wt_session=0x806c3b040,config=0x806b736e4 "drop=(checkpoint-1)") at src/session/session_api.c:1441#12 0x000000080565385b in _wrap_Session_checkpoint ()The last 4 are when __backup_list_append opens handles to pin them in the cache:
#0 __wt_err (session=0x8077ea040, error=1,fmt=0x805a02e6a "%s: attempt to write readonly handle")at src/support/err.c:319#1 0x0000000805891f10 in __wt_block_open (session=0x8077ea040,filename=0x819582615 "test_backup.4_cgroup2-000002.lsm", cfg=0x81b7720c0,forced_salvage=false, readonly=false, allocsize=4096, blockp=0x801c752e0)at src/block/block_open.c:170#2 0x0000000805890040 in __wt_block_manager_open (session=0x8077ea040,filename=0x819582615 "test_backup.4_cgroup2-000002.lsm", cfg=0x81b7720c0,forced_salvage=false, readonly=false, allocsize=4096, bmp=0x801c6f300)at src/block/block_mgr.c:597#3 0x00000008058b7186 in __wt_btree_open (session=0x8077ea040, op_cfg=0x0)at src/btree/bt_handle.c:71#4 0x000000080591109a in __wt_conn_btree_open (session=0x8077ea040, cfg=0x0,flags=0) at src/conn/conn_dhandle.c:323#5 0x00000008059e208f in __wt_session_get_btree (session=0x8077ea040,uri=0x809022160 "file:test_backup.4_cgroup2-000002.lsm", checkpoint=0x0,cfg=0x0, flags=0) at src/session/session_dhandle.c:528#6 0x00000008059e1f0a in __wt_session_get_btree (session=0x8077ea040,uri=0x809022160 "file:test_backup.4_cgroup2-000002.lsm", checkpoint=0x0,cfg=0x0, flags=0) at src/session/session_dhandle.c:519#7 0x000000080591e55f in __backup_list_append (session=0x8077ea040,cb=0x801c45400, uri=0x809022160 "file:test_backup.4_cgroup2-000002.lsm")at src/cursor/cur_backup.c:520#8 0x000000080591ee82 in __backup_list_uri_append (session=0x8077ea040,name=0x809022160 "file:test_backup.4_cgroup2-000002.lsm",skip=0x7fffffffc4bb) at src/cursor/cur_backup.c:480#9 0x00000008059d0a73 in __wt_schema_worker (session=0x8077ea040,uri=0x809022160 "file:test_backup.4_cgroup2-000002.lsm", file_func=0,name_func=0x80591eb70 <__backup_list_uri_append>, cfg=0x7fffffffc9e0,open_flags=0) at src/schema/schema_worker.c:38#10 0x0000000805982332 in __wt_lsm_tree_worker (session=0x8077ea040,uri=0x816fda5a0 "lsm:test_backup.4_cgroup2", file_func=0,name_func=0x80591eb70 <__backup_list_uri_append>, cfg=0x7fffffffc9e0,open_flags=0) at src/lsm/lsm_tree.c:1356#11 0x00000008059d0ef4 in __wt_schema_worker (session=0x8077ea040,uri=0x816fda5a0 "lsm:test_backup.4_cgroup2", file_func=0,name_func=0x80591eb70 <__backup_list_uri_append>, cfg=0x7fffffffc9e0,open_flags=0) at src/schema/schema_worker.c:81#12 0x00000008059d1125 in __wt_schema_worker (session=0x8077ea040,uri=0x801c6ee00 "table:test_backup.4", file_func=0,name_func=0x80591eb70 <__backup_list_uri_append>, cfg=0x7fffffffc9e0,open_flags=0) at src/schema/schema_worker.c:101#13 0x000000080591e029 in __backup_uri (session=0x8077ea040, cfg=0x7fffffffc9e0,foundp=0x7fffffffc841, log_only=0x7fffffffc842)at src/cursor/cur_backup.c:396#14 0x000000080591d806 in __backup_start (session=0x8077ea040, cb=0x801c45400,cfg=0x7fffffffc9e0) at src/cursor/cur_backup.c:241#15 0x000000080591cc71 in __wt_curbackup_open (session=0x8077ea040,uri=0x805634fb4 "backup:", cfg=0x7fffffffc9e0, cursorp=0x7fffffffca10)at src/cursor/cur_backup.c:143#16 0x00000008059d1fab in __session_open_cursor_int (session=0x8077ea040,uri=0x805634fb4 "backup:", owner=0x0, other=0x0, cfg=0x7fffffffc9e0,cursorp=0x7fffffffca10) at src/session/session_api.c:338#17 0x00000008059d4d44 in __session_open_cursor (wt_session=0x8077ea040,uri=0x805634fb4 "backup:", to_dup=0x0,config=0x806b8dfcc "target=(\"table:test_backup.4\",)",cursorp=0x7fffffffca80) at src/session/session_api.c:423