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a23414dd32
When the log is stored in persistent memory, log_sys.buf[] is
a ring buffer that directly maps to the circular ib_logfile0 file.
There were several errors that could occur in the special case
when a log record ends exactly at the end of the log file and the
next record would start at log_sys.buf[log_sys.START_OFFSET].
mariabackup.huge_lsn,strict_full_crc32: Write the first record
at the very end of the circular file, to reproduce the failure
scenarios.
recv_sys_t::parse(): On PMEM, wrap the end offset of the record
from log_sys.file_size to log_sys.START_OFFSET if needed.
Otherwise, both InnoDB recovery and mariadb-backup would try
to parse the next record from an invalid address.
filename_to_spacename(): Remove an assumption about the format
of file names. While the server currently writes file names like
./databasename/tablename.ibd we might want to stop writing the
redundant ./ prefix in the future. The test mariabackup.huge_lsn
is generating such file names.
xtrabackup_copy_logfile(): Correctly copy a record that ends at
the very end of the log_sys.buf[].
The errors in mariadb-backup were reproduced with the test
mariabackup.huge_lsn,strict_full_crc32 and an additional patch
to use the start checkpoint of the test:
diff --git a/storage/innobase/log/log0recv.cc b/storage/innobase/log/log0recv.cc
index 27dce5fa17d..e17a1692d6f 100644
--- a/storage/innobase/log/log0recv.cc
+++ b/storage/innobase/log/log0recv.cc
@@ -1796,7 +1796,8 @@ dberr_t recv_sys_t::find_checkpoint()
continue;
}
- if (checkpoint_lsn >= log_sys.next_checkpoint_lsn)
+ if (checkpoint_lsn >= log_sys.next_checkpoint_lsn &&
+ checkpoint_lsn != 0x1000fffffe10)
{
log_sys.next_checkpoint_lsn= checkpoint_lsn;
log_sys.next_checkpoint_no= field == log_t::CHECKPOINT_1;
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|---|---|---|
| .. | ||
| quicklz | ||
| backup_copy.cc | ||
| backup_copy.h | ||
| backup_debug.h | ||
| backup_mysql.cc | ||
| backup_mysql.h | ||
| backup_wsrep.h | ||
| changed_page_bitmap.cc | ||
| changed_page_bitmap.h | ||
| CMakeLists.txt | ||
| common.h | ||
| datasink.cc | ||
| datasink.h | ||
| ds_buffer.cc | ||
| ds_buffer.h | ||
| ds_compress.cc | ||
| ds_compress.h | ||
| ds_local.cc | ||
| ds_local.h | ||
| ds_stdout.cc | ||
| ds_stdout.h | ||
| ds_tmpfile.cc | ||
| ds_tmpfile.h | ||
| ds_xbstream.cc | ||
| ds_xbstream.h | ||
| fil_cur.cc | ||
| fil_cur.h | ||
| innobackupex.cc | ||
| innobackupex.h | ||
| read_filt.cc | ||
| read_filt.h | ||
| write_filt.cc | ||
| write_filt.h | ||
| wsrep.cc | ||
| xb_plugin.cc | ||
| xb_plugin.h | ||
| xb_regex.h | ||
| xbcloud.cc | ||
| xbstream.cc | ||
| xbstream.h | ||
| xbstream_read.cc | ||
| xbstream_write.cc | ||
| xtrabackup.cc | ||
| xtrabackup.h | ||