similar to: SQLite and ext3 journalling mode

Hello, On my home server (Debian etch, custom 2.6.28.2 kernel), I am using ext3 for both root and /home filesystems, with barriers enabled to prevent corruption caused by my PATA disk write cache. Looking for a better performance, I have also set the commit=nr option as described in linux-2.6.28.2/Documentation/filesystems/ext3.txt, so that I now have: niko at petole:~$ mount -t ext3

I have been trying to figure out whether I can enable write caching on my PATA hard drives (WD3200JB) and have fsync not return until data is safely on the platters. I am also running software raid. This is currently on FC5 (though soon to be FC6) with a 2.6.18 kernel. >From snippets I have found on the net, it looks like write barriers are pushed down through software raid when using raid 1.

On 06/27/2011 07:46 AM, NeilBrown wrote: > On Thu, 23 Jun 2011 12:53:37 +0200 Nico Schottelius > <nico-lkml-20110623@schottelius.org> wrote: > >> Good morning devs, >> >> I''m wondering whether the raid- and volume-management-builtin of btrfs is >> actually a sane idea or not. >> Currently we do have md/device-mapper support for raid >>

Hi all, We are building a new system which is going to use ext3 FS. We would like to know more about the behavior of ext3 in the case of failure. But before I procede, I would like to share more information about our future system. * Our application always does an fsync on files * When symbolic links (more specifically fast symlink) are created, the host directory is also fsync'ed. * Our

I am getting an error that I can''t figure out. I have a class called Test with 3 fields, id, x, and y. When I do Test.new(''x''=>1, ''y''=>2).save, I get an error saying that id (my ''not null primary key'') can''t be null. But isn''t active record supposed to deal with setting that for me? Here''s the code

This was a request from the systemd guys. They need a quick and easy way to get all devices attached to a Btrfs filesystem in order to check if any of the disks are SSD for...something, I didn''t ask :). I''ve tested this with the btrfs-progs patch that accompanies this patch. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com> --- fs/btrfs/ioctl.c | 64

Hi - I'm searching for file system corruption tool, say it inject disk-errors like multiply owned blocks etc. Later an integrity scan process (like e2fsck) will verify on-disk layout and fix these errors. I'd like to read/understand such tools before writing one for an proprietary on-disk file system. Do we have such tools for ext{2,3,4}fs ? Thanks for any help or pointers! -- ----

Where in the ext2/3 code does it know that a block on the disk is now free to reuse? Thanks, Chris -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://listman.redhat.com/archives/ext3-users/attachments/20080916/7b737a93/attachment.htm>

After some extra reading about LVM snapshots & Gluster, I think I can conclude it may be a bad idea to use it on big storage bricks. I understood that the LVM maximum metadata, used to store the snapshots data, is about 16GB. So if I have a brick with a volume arount 10TB (for example), daily snapshots, files changing ~100GB : the LVM snapshot is useless. LVM's snapshots doesn't

On 10/11/2017 09:50 AM, ML wrote: > Hi everyone, > > I've read on the gluster & redhat documentation, that it seems recommended to > use XFS over LVM before creating & using gluster volumes. > > Sources : > https://access.redhat.com/documentation/en-US/Red_Hat_Storage/3/html/Administration_Guide/Formatting_and_Mounting_Bricks.html > >

I am following the rails book, and arrived to the section about testing. The test database is configured as: test: adapter: sqlite3 database: ":memory:" and I get this error with the simple product test: % ruby test/unit/product_test.rb Loaded suite test/unit/product_test Started E/usr/local/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.1.0/lib/sqlite3/ errors.rb:94:in

When designing a filesystem, is fragmentation really an issue if access to the disk can be done using scatter-gather DMA techics ?

Hi All, I am working on a POC that I''d like to show a group of 10 to 15 folks. I was wondering if sqlite would do for db with about 20 people hitting on the application. Does sqlite locking the entire db while writing manifest itself in such scenario? Regards, Kashyap

Bear with me, this is CentOS related. :) I have a python CGI that's behaving weirldy on Whitebox systems that've been switched over to CentOS 4 (ages ago, no other problems to speak of aside from this one). I've broken the problem down to a minimal test case... 1. Create a small database # sqlite3 /tmp/testcase.db 'CREATE TABLE testtable ( date date primary key unique, name

We have a script that adds corruption to ext2/3/4 filesystems and runs e2fsck on it. It definitely could be improved, but it still catches some occasional errors: http://git.whamcloud.com/?p=tools/e2fsprogs.git;a=commit;h=aee44c669bebe29bfdb8a1c86da443234f8bc257 It tries to format the filesystem with different features and options, then adds corruption from both random data and copying parts of

How can I change SQLite cache size for R session? SQLite cache size can be set by a pragma, for the duration of the session - or by default. .pragma cache_size .pragma default_cache_size my questions are about RSQLite, version 0.4, running on Windows: - what is the cache size set to when SQLite is invoked from R? - if the page_size is set to 4096 what will be the cache size in bytes

Hi all, Does anyone know a good windows client for sqlite 3? typical use is create and modify tables and export creation queries. Thanks, Nicolas -------------- next part -------------- An HTML attachment was scrubbed... URL: http://wrath.rubyonrails.org/pipermail/rails/attachments/20060228/363834cf/attachment.html

This has been driving me crazy for a few days now. I am using sqlite3 however I have also found this to be the case with 2.8.15: I have data types text or integer on every column of every table in the database. Now i know sqlite doesnt care much about data types, but I believe rails does (correct me if im wrong). On pages that query a table, everything is perfect. BUT when I use a view

Fedora 33 switched the DB of RPM to SQLite, so no more Packages/Name/etc files. Because any missing file exception is ignored when checking for --if-newer, the lack of the Package files was not properly noticed, so the appliance was always considered out out date. Check for the SQLite-based DB first, falling back to the old format. Signed-off-by: Pino Toscano <ptoscano@redhat.com> ---

Dear all, While going through the archived mailing list and crawling along the wiki I didn''t find any clues if there would be any optimizations in Btrfs to make efficient use of functions and features that today exist on enterprise class storage arrays. One exception to that was the ssd option which I think can make a improvement on read and write IO''s however when attached to