Thanks for the report Bart. On July 8th, it appears I changed the method MaRecoveryRecord>>#writeTo: to add a call to setToEnd, and this would appear to be the cause of this file-growth problem.
The reason for the change was that a warm-backup could request an earlier commit-log record in the current active commits.log file, which would cause a reposition of the file-pointer. I therefore made it the responsibility of the process doing the writing to position to its desired position just before writing, rather than assuming it would be in the correct position (eof).
What I failed to remember at the time is that method is generic, being also used for the before-images file (applied.images), which expects to be writing always from the *beginning* of the file, not the end. So my fix was put in at too low a level and inadvertently introduced this new bad bug, sorry.
I've moved the fix to the proper place and released it as r44Beta1 on the "MagmaTester" project of squeaksource. I'm quite certain this will fix the problem for you. Would you please let me know if you encounter any further problems?
- Chris
PS - Shut down the db, you can then delete your old applied.images.
On Fri, Dec 25, 2009 at 8:40 AM, Bart Gauquie bart.gauquie@gmail.com wrote:
Dear all,
I'm getting following error trying to add a new entry to a Magma Database: aString: 'File write failed' see attachment for more details. The error is that the 'applied.images' file has reached 2 Gigabyte on my machine. All the commits I've done, happened in the same session ... Stopping and starting database does not work, because Magma again tries to write to the applied.images file. Restarting the image does work, since the applied.images file is empty again. Is this a known issue ? Should Magma not 'rotate' the file if it reaches the maximum ? I'm using Ubuntu Linux 9.10 64 bit; with ext4 as a filesystem. Thanks for any help, Kind Regards, Bart -- imagination is more important than knowledge - Albert Einstein Logic will get you from A to B. Imagination will take you everywhere - Albert Einstein Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning. - Albert Einstein The true sign of intelligence is not knowledge but imagination. - Albert Einstein Gravitation is not responsible for people falling in love. - Albert Einstein
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Hi Chris,
I've tested the change you provided; reran the previous scenario which generated the large file. And the result is that the bug seems fixed indeed. The applied.images file stays a few megabytes, but does not become 2 gig.
Thanks for the bugfix!
Kind Regards,
Bart
magma@lists.squeakfoundation.org
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Bart Gauquie -
Chris Muller