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Physical backup cannot restart operations after the explicit difference file has been dropped [CORE2750] #3145

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firebird-automations opened this issue Nov 12, 2009 · 5 comments

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Submitted by: Claudio Valderrama C. (robocop)

Assigned to: Claudio Valderrama C. (robocop)

F:\fb3dev\fbbuild\firebird30\temp\Win32\Debug\firebird\bin>isql
Use CONNECT or CREATE DATABASE to specify a database
SQL> create database 'sharks';
SQL> alter database add difference file 'tuna';
SQL> alter database begin backup;
SQL> alter database end backup;
SQL> alter database drop difference file;
SQL> alter database begin backup;
Statement failed, SQLSTATE = 42000
unsuccessful metadata update
-STORE RDB$FILES failed
-message length error (encountered 278, expected 276)
SQL>

This happens because drq_s_difference has been reused in dyn_mod (it was used in dyn_def) with an extra null flag being referenced. This causes the total length of the message to differ in two bytes (the null flag is USHORT) and fail. The solution is to assign a new drq.

Commits: 4059c77 63a20eb

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Modified by: Claudio Valderrama C. (robocop)

assignee: Claudio Valderrama C. [ robocop ]

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Modified by: Claudio Valderrama C. (robocop)

status: Open [ 1 ] => Resolved [ 5 ]

resolution: Fixed [ 1 ]

Fix Version: 3.0 Alpha 1 [ 10331 ]

@firebird-automations
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Modified by: Claudio Valderrama C. (robocop)

Fix Version: 2.5 RC3 [ 10381 ]

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Modified by: @pcisar

status: Resolved [ 5 ] => Closed [ 6 ]

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Modified by: @pavel-zotov

QA Status: No test

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