Monthly Status Updates/June 2007: Difference between revisions
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''This page is in progress: wiki changes are up to date; remainder is current through 6/ | <div style="float: right;">__TOC__</div>''This page is in progress: wiki changes are up to date; remainder is current through 6/7.'' | ||
June saw the release of Amanda 2.5.2p1 on June 6, a patch release which was thoroughly tested with the help of the [[Platform Experts]] and many users from the mailing lists and forums. This patch release has proven quite stable, and development has shifted to feature development for the next release. | |||
= Wiki Changes = | = Wiki Changes = | ||
* [[User:Mmuehlfeld|Marc Muehlfeld]] provided a [[MySQL Backup and Recovery#Other tools/scripts for MySQL backup|link to a useful script]] for performing backups of MySQL databases. | * [[User:Mmuehlfeld|Marc Muehlfeld]] provided a [[MySQL Backup and Recovery#Other tools/scripts for MySQL backup|link to a useful script]] for performing backups of MySQL databases. | ||
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== [http://forums.zmanda.com Forums] Discussions == | == [http://forums.zmanda.com Forums] Discussions == | ||
* [http://forums.zmanda.com/member.php?u=1746 tamiral] asked several interesting questions: | |||
** [http://forums.zmanda.com/showpost.php?p=2256&postcount=1 How can I verify that AMANDA has successfully backed-up files?] -- [http://forums.zmanda.com/member.php?u=361 Shailen Patel] suggested using ''amrecover'' to test a full restore, which is more thorough than the tape verification performed by ''amverify''. | |||
** [http://forums.zmanda.com/showpost.php?p=2258&postcount=3 I'm concerned that because my defined tape size is larger than the amount of diskspace I have...] -- [http://forums.zmanda.com/member.php?u=361 Shailen Patel] and [http://forums.zmanda.com/member.php?u=925 Dustin J. Mitchell] responded that yes, this could cause a problem, and referencing wiki pages describing the optimal configuration. | |||
** [http://forums.zmanda.com/showpost.php?p=2308&postcount=12 Basically, I'd rather use 'dd' for those kind of jobs (even unmount the filesystem so it won't change), but I guess I can't with AMANDA. What is the recommended dumptype for this kind of backup...?] -- [http://forums.zmanda.com/member.php?u=6 Paddy Sreenivasan] suggested a dumptype with ''always-full'', compression off, and encryption off. | |||
* [http://forums.zmanda.com/member.php?u=1748 George Reeke] had [http://forums.zmanda.com/showthread.php?t=616 a client machine which exceeded Amanda's connect timeout because its hard drives took too long to spin up]. [http://forums.zmanda.com/member.php?u=6 Paddy Sreenivasan] suggested increasing ''ctimeout'' and ''etimeout''. | |||
* [http://forums.zmanda.com/member.php?u=360 Andrew Rakowski] asked whether Amanda's bandwidth configuration variables are in bits or bytes per second. [http://forums.zmanda.com/member.php?u=1678 Gregory Grant] responded that they are, indeed, bytes per second. | |||
== [http://www.amanda.org/support/mailinglists.php Mailing List] Discussions == | == [http://www.amanda.org/support/mailinglists.php Mailing List] Discussions == | ||
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* Robert P. McGraw, Chris Hoogendyk, and Brian Cuttler {{marc.info thread|118071205500009|discussed the relative merits of hardware and software compression}}, noting that Amanda has a difficult time calculating the number of dumps it can fit on a tape when hardware compression is enabled. | * Robert P. McGraw, Chris Hoogendyk, and Brian Cuttler {{marc.info thread|118071205500009|discussed the relative merits of hardware and software compression}}, noting that Amanda has a difficult time calculating the number of dumps it can fit on a tape when hardware compression is enabled. | ||
* Marc Muehlfeld {{marc.info thread|118094738200007|wondered how Amanda can fill a tape to more than 100% capacity}}. Cyrille Bollu and Paul Bijnens answered, pointing out that tapes differ in actual capacity, and that Amanda only uses the ''tapelength'' for planning purposes, but will happily consume any extra space it finds. | * Marc Muehlfeld {{marc.info thread|118094738200007|wondered how Amanda can fill a tape to more than 100% capacity}}. Cyrille Bollu and Paul Bijnens answered, pointing out that tapes differ in actual capacity, and that Amanda only uses the ''tapelength'' for planning purposes, but will happily consume any extra space it finds. | ||
* Paul Crittenden {{marc.info thread| | * Paul Crittenden {{marc.info thread|118113311212591|discovered an error in the file-locking support detection}}, which caused Solaris builds of Amanda to use no file locking at all. Chris Hoogendyk, Jon LaBadie, Jean-Louis Martineau, and Dustin J. Mitchell chased down a solution. | ||
* Alan Jedlow {{marc.info thread|118100357400002|discovered a bug in ''chg-zd-mtx''}}, which was fixed by Dustin Mitchell. | * Alan Jedlow {{marc.info thread|118100357400002|discovered a bug in ''chg-zd-mtx''}}, which was fixed by Dustin J. Mitchell. | ||
* Jordan Desroches {{marc.info thread|118118128700001|had errors backing up a subdirectory of an NFS mount}}. Paul Bijnens, Dustin J. Mitchell, Olivier Nicole, and Jean-Louis Martineau contributed advice, eventually determining that the ''amanda'' user did not have adequate permissions on the subdirectory. | |||
=== [http://marc.info/?l=amanda-hackers&r=1&b=200706&w=2 amanda-hackers] === | === [http://marc.info/?l=amanda-hackers&r=1&b=200706&w=2 amanda-hackers] === | ||
== Code Development == | == Code Development == | ||
* [mailto:[email protected] Dustin Mitchell] committed a number of bugfixes | * [mailto:[email protected] Dustin J. Mitchell] committed a number of bugfixes | ||
* [mailto:[email protected] Jean-Louis Martineau] committed a number of bugfixes and | * [mailto:[email protected] Jean-Louis Martineau] committed a number of bugfixes and | ||
** fixed a bug, discovered by Marc Muehlfeld, where hosts running in a mixed IPv4/IPv6 environment would encounter errors | ** fixed a bug, discovered by Marc Muehlfeld, where hosts running in a mixed IPv4/IPv6 environment would encounter errors |
Revision as of 23:19, 27 June 2007
This page is in progress: wiki changes are up to date; remainder is current through 6/7.
June saw the release of Amanda 2.5.2p1 on June 6, a patch release which was thoroughly tested with the help of the Platform Experts and many users from the mailing lists and forums. This patch release has proven quite stable, and development has shifted to feature development for the next release.
Wiki Changes
- Marc Muehlfeld provided a link to a useful script for performing backups of MySQL databases.
- Harald Schioeberg provided Lto-barcode, a perl script to generate barcode labels for LTO Tapes.
- Erik W wrote a detailed How To:Install Amanda Server on AIX.
- Harald Schioeberg provided Chg-multiplex, a wrapper to use multiple Amanda configs in a single restore operation.
- Paul Bijnens contributed a multitude of minor edits all over the wiki, increasing readability and clarity.
Forums Discussions
- tamiral asked several interesting questions:
- How can I verify that AMANDA has successfully backed-up files? -- Shailen Patel suggested using amrecover to test a full restore, which is more thorough than the tape verification performed by amverify.
- I'm concerned that because my defined tape size is larger than the amount of diskspace I have... -- Shailen Patel and Dustin J. Mitchell responded that yes, this could cause a problem, and referencing wiki pages describing the optimal configuration.
- Basically, I'd rather use 'dd' for those kind of jobs (even unmount the filesystem so it won't change), but I guess I can't with AMANDA. What is the recommended dumptype for this kind of backup...? -- Paddy Sreenivasan suggested a dumptype with always-full, compression off, and encryption off.
- George Reeke had a client machine which exceeded Amanda's connect timeout because its hard drives took too long to spin up. Paddy Sreenivasan suggested increasing ctimeout and etimeout.
- Andrew Rakowski asked whether Amanda's bandwidth configuration variables are in bits or bytes per second. Gregory Grant responded that they are, indeed, bytes per second.
Mailing List Discussions
amanda-users
- Jon LaBadie tried running amtapetype on a vtape, and the results spawned an interesting discussion on what amtapetype should do in such a situation.
- Robert P. McGraw, Chris Hoogendyk, and Brian Cuttler discussed the relative merits of hardware and software compression, noting that Amanda has a difficult time calculating the number of dumps it can fit on a tape when hardware compression is enabled.
- Marc Muehlfeld wondered how Amanda can fill a tape to more than 100% capacity. Cyrille Bollu and Paul Bijnens answered, pointing out that tapes differ in actual capacity, and that Amanda only uses the tapelength for planning purposes, but will happily consume any extra space it finds.
- Paul Crittenden discovered an error in the file-locking support detection, which caused Solaris builds of Amanda to use no file locking at all. Chris Hoogendyk, Jon LaBadie, Jean-Louis Martineau, and Dustin J. Mitchell chased down a solution.
- Alan Jedlow discovered a bug in chg-zd-mtx, which was fixed by Dustin J. Mitchell.
- Jordan Desroches had errors backing up a subdirectory of an NFS mount. Paul Bijnens, Dustin J. Mitchell, Olivier Nicole, and Jean-Louis Martineau contributed advice, eventually determining that the amanda user did not have adequate permissions on the subdirectory.
amanda-hackers
Code Development
- Dustin J. Mitchell committed a number of bugfixes
- Jean-Louis Martineau committed a number of bugfixes and
- fixed a bug, discovered by Marc Muehlfeld, where hosts running in a mixed IPv4/IPv6 environment would encounter errors