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Topic: Ext3

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	Ext3 for large filesystems [LWN.net]
		While it is true that the Linux VFS layer treats all filesystems equally, the ext3 filesystem is certainly the first among equals.
		Ext3 is the default choice for a large majority of distributions; it can thus be found on vast numbers of installed Linux systems.
		Ext3 is based on decades of experience with Unix filesystems.
	lwn.net /Articles/187321 (2058 words)

	Ext3 - Wikipedia, the free encyclopedia
		The ext3 or third extended filesystem is a journalled file system that is commonly used by the Linux operating system.
		Since ext3 aims at being mostly compatible with ext2, many of the on-disk structures are similar to those of ext2.
		ext3 filesystems cannot be fscked while the filesystem is mounted for writing.
	en.wikipedia.org /wiki/Ext3 (945 words)

	Common threads: Advanced filesystem implementor's guide, Part 7
		The ext3 filesystem, designed by Dr. Stephen Tweedie, is built on the framework of the existing ext2 filesystem; in fact, ext3 is very similar to ext2 except for one small (but important) difference -- it supports journaling.
		One of the nice things about ext3 is that because it is based on the ext2 code, ext2 and ext3's on-disk format is identical; this means that a cleanly unmounted ext3 filesystem can be remounted as an ext2 filesystem with absolutely no problems.
		But because ext3 uses complete blocks internally and in the journal, ext3 doesn't deal with as much complexity as it would if it were to implement logical journaling.
	www.ibm.com /developerworks/linux/library/l-fs7.html (2327 words)

	Common threads: Advanced filesystem implementor's guide, Part 7
		The ext3 filesystem, designed by Dr. Stephen Tweedie, is built on the framework of the existing ext2 filesystem; in fact, ext3 is very similar to ext2 except for one small (but important) difference -- it supports journaling.
		One of the nice things about ext3 is that because it is based on the ext2 code, ext2 and ext3's on-disk format is identical; this means that a cleanly unmounted ext3 filesystem can be remounted as an ext2 filesystem with absolutely no problems.
		But because ext3 uses complete blocks internally and in the journal, ext3 doesn't deal with as much complexity as it would if it were to implement logical journaling.
	www-128.ibm.com /developerworks/linux/library/l-fs7.html (2327 words)

	EXT3, Journaling Filesystem
		The ext3 filesystem is a journaling extension to the standard ext2 filesystem on Linux.
		If you have an EXT3 filesystem that after a crash, for example, and there's a journal on there which is active and needs to be replayed onto the filesystem, then in that particular case you need to have recovery.
		The way that this works in EXT3, is that the journaling layer provides the filesystem with the ability to record the last committed state of the bitmap block.
	olstrans.sourceforge.net /release/OLS2000-ext3/OLS2000-ext3.html (12270 words)

	[No title]
		The ext3 file system is a set of incremental enhancements to the robust ext2 file system that provide several advantages.
		The time to recover an ext3 file system after an unclean system shutdown does not depend on the size of the file system or the number of files; rather, it depends on the size of the "journal" used to maintain consistency.
		It is easy to change from ext2 to ext3 and gain the benefits of a robust journaling file system, without reformatting.
	www.redhat.com /support/wpapers/redhat/ext3 (899 words)

	empeg ext3
		Ext3 is a journaling filesystem which has the advantage of not needing to do a long annoying file system check if the empeg crashes during a sync or you forget to mount the drives read only after modifying something.
		All the ext3 patches have been integrated into hijack so you should just grab that patch instead as it is more up to date.
		This is a kernel built from the hijack v440 source with ext3 support turned on for a mark2.
	macgeek.dyndns.org /empeg/ext3 (909 words)

	Ext 3 - Waikato Linux Users Group
		Ext3 is a journaled FileSystem based on Ext2.
		It also has some additional features such as extents (which reduce the amount of overhead with storing where a file is stored on the disk for large files), and hash based lookups on directories solving the problem Ext2 has with large directories being very slow.
		So make sure the Ext3 FileSystem was properly flushed and unmounted before you attempt to mount it as Ext2.
	www.wlug.org.nz /Ext3 (491 words)

	Snakegully - ext3 file-system notes
		ext3 uses the same system format as ext2, but adds a journal to safely track file system writes.
		The tools used to manage the ext3 system are just updated versions of the ext2 tools, with support for the journal built in.
		Disable ext2's regular fsck for the file-system on /dev/hda1 (recommended for ext3 because this check should not be needed).
	www.snakegully.nu /tech/ext3.html (98 words)

	Xlife - Switching from an ext2 to an ext3 filesystem (Site not responding. Last check: )
		The solution is ext3, which has been described as "half a filesystem", because all it does is exactly this, add journaling to ext2.
		Ext3 support was added since version 1.22, so be sure you get and install at least that version if you don't have it already.
		In case you plan to have ext3 partitions which will be auto-mounted, you also need to upgrade your util-linux package.
	xlife.zuavra.net /columns/20020211 (1175 words)

	Linux Today - Red Hat: ext3 information
		This means that ext3 shares ext2's well-known robustness, but also that new features are added to ext2, they can be carried over to ext3 with little difficulty.
		ext3 provides and makes use of a generic journaling layer (jbd) which can be used in other contexts, and can journal not only within the file system, but also to other devices, so as NVRAM devices become available and supported under Linux, ext3 will be able to support them.
		ext3 uses this same e2fsck code for salvaging the file system after such corruption so it has the same robustness against catastrophic data loss as ext2 in the presence of data-corruption faults.
	www.linuxtoday.com /news_story.php3?ltsn=2001-08-22-004-20-NW-RH (1987 words)

	How to Increase ext3 and ReiserFS filesystems Performance -- Ubuntu Geek
		The ext3 or third extended filesystem is a journalled file system that is commonly used by the Linux operating system.
		The journaling provided by the ext3 file system means that this sort of file system check is no longer necessary after an unclean system shutdown.
		The ext3 file system allows you to choose the type and level of protection that your data receives.
	www.ubuntugeek.com /how-to-increase-ext3-and-reiserfs-filesystems-performance.html (1836 words)

	mkfs.ext3(8): create ext2/ext3 filesystem - Linux man page
		Note that you must be using a kernel which has ext3 support in order to actually make use of the journal.
		Create the ext3 journal using options specified on the command-line.
		Create an external ext3 journal on the given device instead of a regular ext2 filesystem.
	www.die.net /doc/linux/man/man8/mkfs.ext3.8.html (1252 words)

	Using the ext3 filesystem in 2.4 kernels
		ext3 filesystems may still be mounted by ext2 as long as they have been cleanly unmounted.
		ext2 will refuse to mount ext3 filesystems which have not been cleanly shut down, because there is live data still in the journal which ext2 does not know how to deal with.
		This still happens with ext3, and is quite possibly not what you want to happen - one of the reasons you chose ext3 was to avoid the downtime which is caused by a long fsck.
	www.zip.com.au /~akpm/linux/ext3/ext3-usage.html (1320 words)

	ext3-devel - Fedora Project Wiki
		In order to accommodate the growth of disk size in the next 2-5 years, the ext3 filesystem capacity needs to expand, hence the extents/64bit project.
		The patchset was originally developed by the developers at Bull; however, there are many other aspects of the ext3 64bit support that weren't addressed by the original patchset.
		Most notably, the EXT3 extents with 64bit physical block patch and 64bit logical block patch.
	fedoraproject.org /wiki/ext3-devel (189 words)

	Linux: Data corrupting ext3 bug in 2.4.20 (Site not responding. Last check: )
		Andrew Morton [interview] posted on the lkml, "In 2.4.20-pre5 an optimisation was made to the ext3 fsync function which can very easily cause file data corruption at unmount time".
		This bug only affects people using ext3 in the uncommon "data=journal" mode, or files operating under "chattr -j", and does not affect the 2.5 series of kernels.
		Since "data=journal" is not the default ext3 mode, it is unlikely most people running ext3 will be affected by this.
	kerneltrap.org /node.php?id=515 (565 words)

	gmane.comp.file-systems.ext3.user
		This is my first time at the ext3 forum and a new Linux user, so any help with commands or procedures to implement ext3, or whatever would be the best suited fs, is greatly appreciated.
		I added some debug code to these system threads in order to find out where they are spending their time in the hopes that I can identify a place where they may be experiencing unexpected delays.
		What I did was change this wakeup to be unconditional, and it appears to have had a positive impact on the delays the system threads, I've been monitoring, have been experiencing.
	blog.gmane.org /gmane.comp.file-systems.ext3.user (1952 words)

	Linux ext3 FAQ
		Ext3 is a journaling filesystem developed by Stephen Tweedie.
		If you want to use ext3 on your root filesystem, the ext3 filesystem module will always be loaded and can not be unloaded, so it might as well be compiled-in.
		If you do want to compile ext3 as a module and use it as your root filesystem, it can be done, but what you must do is do is boot into an initial ramdisk (initrd) image as your root image.
	batleth.sapienti-sat.org /projects/FAQs/ext3-faq.html (1626 words)

	Converting Ext2 Filesystems to Ext3
		The Ext3 filesystem is an Ext2 filesystem with a journal file and some filesystem driver additions making the filesystem journalized.
		Converting the root directory from Ext2 to Ext3 isn't difficult, but converting it back from Ext3 to Ext2 is a treacherous process fraught with problems.
		Converting from Ext2 to Ext3 is usually easy, although converting the root partition is usually undesirable.
	www.troubleshooters.com /linux/ext2toext3.htm (886 words)

	Error: "Kernel Panic: No Init Found. . ." after restoring an image of an EXT2 or EXT3 partition
		You performed a Disk-to-Disk clone of a hard drive that uses the Linux EXT2 or EXT3 file system, or you restored an image of a hard drive that uses the Linux EXT2 or EXT3 file system.
		If you use a Ghost version other than Symantec Ghost 7.5 with EXT3, the following information is provided as a convenience only, and Symantec does not provide technical support for using Ghost in this manner.
		In this command line, hda represents the first IDE hard drive in the computer and the "1" represents the first partition to repair.
	service1.symantec.com /SUPPORT/ghost.nsf/pfdocs/2001110807415125 (349 words)

	Filesystems (ext3, reiser, xfs, jfs) comparison on Debian Etch
		Interestingly, the residual capacity of Ext3 and ReiserFS was identical to the initial, while JFS and XFS lost about 0.02% of their partition capacity, suggesting that these FS can dynamically grow but do not completely return to their inital state (and size) after file removal.
		My experience is that 'ext3' requires at least 10% free space to perform decently over time (the 5% default is the absolute minimum that should be done) and 20-30% free space reserve is a lot better.
		I compared the ext3 "tuned" modes, and found ext3 with dir_index, and dir_index with data=writeback or data=journal improved most tests, in some cases where directories were involved, remarkably.
	www.debian-administration.org /articles/388 (10318 words)

	Ext2/Ext3 improvement project
		EXT3 extents with 64 bits physical blocks patch (2) (to apply on top of previous patch (1))
		After a little study, I propose to make ext3 ready for the future by implementing 64bit addressing mode now.
		In ext3, the size limit of a group is given by the number of bit we can store in a block for the group bitmap and, then by the maximum value of a 16bit field.
	www.bullopensource.org /ext4 (726 words)

	Microsuck Forums - Ext2/Ext3
		In fact ext3 is the same format as ext2, the only difference is a journal (/.journal file) as IanC stated, and a kernel module called "journald".
		If your system is already capable of ext3 (compiled into the kernel and you have all of the fs tools with ext3 support) it should be really easy.
		If your system is not currently ext3 ready you will probably have to get an updated kernel and recompile with ext3 support.
	www.fuckmicrosoft.com /forums/printthread.php?t=2371 (955 words)

	LinuxPlanet - Reports - Exploring the ext3 Filesystem - Introduction to the ext3 Filesystem
		One of the most interesting of these new mechanisms is the ext3 filesystem, which has been integrated into the Linux kernel since version 2.4.16 and is already available as a default filesystem type on Linux distributions from Red Hat and SuSE.
		The ext3 filesystem is a journaling filesystem that is 100% compatible with all of the utilities created for creating, managing, and fine-tuning the ext2 filesystem, which is the default filesystem used by Linux systems for the last few years.
		Before delving into the differences between the ext2 and ext3 filesystems, a quick refresher on storage and filesystem terminology is in order.
	www.linuxplanet.com /linuxplanet/reports/4136/1 (422 words)

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