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Showstopper bug in latest UEKR3 kernel - can't create LVM snapshot of ext4 fs

cooldogJan 3 2014 — edited Feb 14 2014

cross-posted to gain a wider audience, because this is urgent

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When my backup system attempts to create an LVM snapshot of an ext4 fs, it fails, and the log is full of kernel warnings.  Some of my servers actually reboot themselves.  i've had to turn off backups for the moment.

It seems that this is a known problem, and a patch for it already exists.  See: Re: warning in ext4_journal_start_sb on filesystem freeze (Linux Ext4)

I gave this info to a receptionist at Oracle on 12/30, and she seemed to understand that it needed to get to the Oracle Linux product group, but so far no one has contacted me for details, or to let me know that they're working on this.

It seems to me that this is a 100% critical bug, that *ought* to have gotten an immediate reaction.  Does anyone here know how to get Oracle's attention?
This post has been answered by Matt C on Feb 10 2014
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Jeff Martin

Your query might win the award for the "shortest question with the longest answer", but I'll try for a short answer. For the first part, you need to fetch data from the database. For this you could use anything from raw JDBC to an Object Relational Mapping (ORM) tool, like Hibernate. For the second part, I would recommend a reporting tool, like Jasper Reports, BIRT or ReportMill. Currently, only ReportMill has generated reports in JavaFX. But they all generate PDF - and that would be my suggestion: generate PDF and use the platform PDF viewer to display and print reports. You could spend years trying to duplicate all the nice display and print functionality found in Acrobat Reader and Mac OS X Preview.

As it happens, ReportMill (disclosure: me) is working on a tool to do exactly what your question asks for:

http://www.reportmill.com/javi/gallery/AddressBook

There is also a very cool database tool that has JavaFX support called XDEV. We'll both be at JavaOne.

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Locked on Mar 14 2014
Added on Jan 3 2014
#linux, #oracle-linux-and-uek-preview
9 comments
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