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# See the file LICENSE for redistribution information.
#
# Copyright (c) 1996-2002
# Sleepycat Software. All rights reserved.
#
# Id: recd020.tcl,v 11.8 2002/08/08 15:38:08 bostic Exp
#
# TEST recd020
# TEST Test recovery after checksum error.
proc recd020 { method args} {
global fixed_len
global log_log_record_types
global datastr
source ./include.tcl
set pgindex [lsearch -exact $args "-pagesize"]
if { $pgindex != -1 } {
puts "Recd020: skipping for specific pagesizes"
return
}
if { [is_queueext $method] == 1 } {
puts "Recd020: skipping for method $method"
return
}
puts "Recd020: $method recovery after checksum error"
# Create the database and environment.
env_cleanup $testdir
set testfile recd020.db
set flags "-create -txn -home $testdir"
puts "\tRecd020.a: creating environment"
set env_cmd "berkdb_env $flags"
set dbenv [eval $env_cmd]
error_check_good dbenv [is_valid_env $dbenv] TRUE
set pgsize 512
set orig_fixed_len $fixed_len
set fixed_len [expr $pgsize / 4]
set opts [convert_args $method $args]
set omethod [convert_method $method]
set oflags "-create $omethod -mode 0644 \
-auto_commit -chksum -pagesize $pgsize $opts $testfile"
set db [eval {berkdb_open} -env $dbenv $oflags]
#
# Put some data.
#
set nument 50
puts "\tRecd020.b: Put some data"
for { set i 1 } { $i <= $nument } { incr i } {
# Use 'i' as key so method doesn't matter
set key $i
set data $i$datastr
# Put, in a txn.
set txn [$dbenv txn]
error_check_good txn_begin [is_valid_txn $txn $dbenv] TRUE
error_check_good db_put \
[$db put -txn $txn $key [chop_data $method $data]] 0
error_check_good txn_commit [$txn commit] 0
}
error_check_good db_close [$db close] 0
error_check_good env_close [$dbenv close] 0
#
# We need to remove the env so that we don't get cached
# pages.
#
error_check_good env_remove [berkdb envremove -home $testdir] 0
puts "\tRecd020.c: Overwrite part of database"
#
# First just touch some bits in the file. We want to go
# through the paging system, so touch some data pages,
# like the middle of page 2.
# We should get a checksum error for the checksummed file.
#
set pg 2
set fid [open $testdir/$testfile r+]
fconfigure $fid -translation binary
set seeklen [expr $pgsize * $pg + 200]
seek $fid $seeklen start
set byte [read $fid 1]
binary scan $byte c val
set newval [expr ~$val]
set newbyte [binary format c $newval]
seek $fid $seeklen start
puts -nonewline $fid $newbyte
close $fid
#
# Verify we get the checksum error. When we get it, it should
# log the error as well, so when we run recovery we'll need to
# do catastrophic recovery. We do this in a sub-process so that
# the files are closed after the panic.
#
set f1 [open |$tclsh_path r+]
puts $f1 "source $test_path/test.tcl"
set env_cmd "berkdb_env_noerr $flags"
set dbenv [send_cmd $f1 $env_cmd]
error_check_good dbenv [is_valid_env $dbenv] TRUE
set db [send_cmd $f1 "{berkdb_open_noerr} -env $dbenv $oflags"]
error_check_good db [is_valid_db $db] TRUE
# We need to set non-blocking mode so that after each command
# we can read all the remaining output from that command and
# we can know what the output from one command is.
fconfigure $f1 -blocking 0
set ret [read $f1]
set got_err 0
for { set i 1 } { $i <= $nument } { incr i } {
set stat [send_cmd $f1 "catch {$db get $i} r"]
set getret [send_cmd $f1 "puts \$r"]
set ret [read $f1]
if { $stat == 1 } {
error_check_good dbget:fail [is_substr $getret \
"checksum error: catastrophic recovery required"] 1
set got_err 1
# Now verify that it was an error on the page we set.
error_check_good dbget:pg$pg [is_substr $ret \
"failed for page $pg"] 1
break
} else {
set key [lindex [lindex $getret 0] 0]
set data [lindex [lindex $getret 0] 1]
error_check_good keychk $key $i
error_check_good datachk $data \
[pad_data $method $i$datastr]
}
}
error_check_good got_chksum $got_err 1
set ret [send_cmd $f1 "$db close"]
set extra [read $f1]
error_check_good db:fail [is_substr $ret "run recovery"] 1
set ret [send_cmd $f1 "$dbenv close"]
error_check_good env_close:fail [is_substr $ret "run recovery"] 1
close $f1
# Keep track of the log types we've seen
if { $log_log_record_types == 1} {
logtrack_read $testdir
}
puts "\tRecd020.d: Run normal recovery"
set ret [catch {exec $util_path/db_recover -h $testdir} r]
error_check_good db_recover $ret 1
error_check_good dbrec:fail \
[is_substr $r "checksum error: catastrophic recovery required"] 1
catch {fileremove $testdir/$testfile} ret
puts "\tRecd020.e: Run catastrophic recovery"
set ret [catch {exec $util_path/db_recover -c -h $testdir} r]
error_check_good db_recover $ret 0
#
# Now verify the data was reconstructed correctly.
#
set env_cmd "berkdb_env_noerr $flags"
set dbenv [eval $env_cmd]
error_check_good dbenv [is_valid_env $dbenv] TRUE
set db [eval {berkdb_open} -env $dbenv $oflags]
error_check_good db [is_valid_db $db] TRUE
for { set i 1 } { $i <= $nument } { incr i } {
set stat [catch {$db get $i} ret]
error_check_good stat $stat 0
set key [lindex [lindex $ret 0] 0]
set data [lindex [lindex $ret 0] 1]
error_check_good keychk $key $i
error_check_good datachk $data [pad_data $method $i$datastr]
}
error_check_good db_close [$db close] 0
error_check_good env_close [$dbenv close] 0
}
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