similar to: How safe is journalling?

All -- I'm curious is if it safe or even wise to run the following command on a mounted filesystem, namely root (/)? tune2fs -j /dev/hda1 What about if someone goes into single user mode and runs this first? mount -o remount,ro / And then to enable it, runs this? mount -t ext2 -o remount,rw / I assume it is not safe to do so, but one user in my LUG assumes otherwise. Just curious,

Back, After to get all informations i received, i put them in table as follow: see attachment file. Specialists can they tell me if they agree with my conclusions ? Thank's for your good job. Fabien. -- Fabien COMBERNOUS - IT Engineer eProcess - Parc Club du Millénaire Batiment n° 6 1025 rue Henri Becquerel - 34000 Montpellier FRANCE http://www.eprocess.fr - +33 (0)4 67 13 84 50

I am testing EXT3 as a filesystem for a server whose power supply is failure prone. In order to do the test, I have a lever that I can control from PC1 that can press the reset button on PC2. PC2's reset button is automatically pressed once every 120 seconds (the boot sequence on PC2 takes 80 seconds). While PC2 is booted, PC1 directs email and web requests at PC2, so that the PC2 disks are

After a (hardware) crash yesterday, I was unable to boot up due to unrecoverable ide errors (according to the printk()s) when accessing the root filesystem's journal for recovery. Unable to recover, I tried deleting the has_journal option, but that was disallowed given that the needs_recovery flag was set. I saw no way to unset that flag. Unable to access the backups (they were on a fw

Hi The man pages don't format properly on Tru64 unix for portable openssh. They come out as a solid lump of text. I managed to fix the problem by including the line .so /usr/local/share/groff/tmac/tmac.andoc (I have GNU groff installed) In the man pages. It appears the OSF -man option on nroff doesn't format the pages correctly. Thanks Jeremy -- Jeremy Sanders <jss at

hello: I have been reviewin my message slog and have found the following message: Dec 19 06:27:28 server02 kernel: EXT3-fs error (device sd(8,7)) in ext3_new_inode: error 28 What is error 28 and should I be worried about it? Ray Turcotte

I need to find out what the maximum file size in an ext2/3 file system. It appears from the definition of the ext2_inode structure that since the i_size field is a 32 bit integer that the file would be limited by that. Thanks, Jason

Hi, I have an ext3 file system on top of LVM and i use journaled mode. I would like to make a snapshot of my filesystem while the application is running in order to backup on another physical storage. For that i have to create an LVM snapshot and then to mount it in read-only for copying the content. This is not possible as far as ext3 needs to do a log replay at mount time ( AFAIK). I would

When I first installed ext3, it worked as expected. After a crash, journals would be played, and no fsck. Now, every crash causes an fsck, just like it were a regular ext2, even though / has a journal and is being mounted as ext3. Some fs info for / Filesystem features: has_journal filetype sparse_super Filesystem state: not clean Errors behavior: Continue Some fs info for

Greetings Everyone, A group in my office is designing/integrating what I would loosly label as an "embedded system". In that, it performs a dedicated task and is not a general purpose workstation or server. It operates in a harsh environment, particularly a questionable power environment and they are extremely concerned about inadvertent shutdown and recovery. They were totally

Can anybody tell me if quota information is journaled ? After bad-shutdown the quota info is correctly or I need run quotacheck ?

I decided to start using ext3. My kernel 2.4.15p9. I downloaded and build util-linux-2.11m and e2fsprogs 1.25. I compiled ext3 in the kernel. I started converting my filesystems and thing went ok for the first few. I then started getting the following on each additional filesystem. [root@joker /root]# tune2fs -j /dev/hdc4 tune2fs 1.25 (20-Sep-2001) Creating journal inode: done This filesystem

Hello folks, I had an ext3 filesystem mounted as the root of a Linux MOO server. Unfortunately, the filesystem was on one of the infamous DTLA-3070xx drives - and the drive decided to fail at the worst moment it possibly could, trashing the filesystem fairly well. The situation is as follows: I used dd_rescue to create an image of what is left of the filesystem, but I ended up with some 65MB

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 subject about says it all. should this only be done once per device or periodically? thanks! - -- Douglas J Hunley (doug at hunley.homeip.net) - Linux User #174778 Admin: Linux StepByStep - http://www.linux-sxs.org and http://jobs.linux-sxs.org Illiterate? Write for help! -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.0 (GNU/Linux)

hi all, I intend to write a snapshot module for Ext2/3 file-systems. For that i need to make sure that FS is in consistent state before taking snapshot. For ex. in case of UFS, the superblock has a fs_clean flag which is set to be FSSTABLE to tell that its in consistent state. (otherwise its set to FSACTIVE) I m not able to find any such information for Ext2/Ext3. (The

Hi, I've been wondering exactly what you gain by using journaled mode over ordered mode. Are there any known cases where journaled mode could recover where ordered mode wouldn't? Mike

Hello: We trying to configure one machine (Compaq Proliant ML760) with 8 disks (72GB each disk) with RAID. We are thinking to use ext3 and LVM in RedHat 7.2 for manage one filesystem with 500GB. This filesystems have to store near off 5.000.000 of files. Is this possible? Could I resize the filesystems/volume to 1TB? what are the ext3 and LVM limits? someone have tested sismilar environment? I

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 hi, just wondering... if i upgrade my kernel + ext3 patch, do i have to recreate the journal? if so (or if not) how do i recreate it? i tried to delete the .journal, reboot and mounting everything as ext2 and do a tune2fs -j /dev/hdxx but it say "The filesystem already has a journal." Thanks, Mark -----BEGIN PGP

Hi, Just thought I'd share some test results of mine in case anyone is interested. Basically the tests are siumulating what our product does with files - although the tests do it a lot quicker (not as many files though). The test is to create 1 million files (each containing the text of the file number) spread over a number of directories. The files are then removed in the same manner as

Hi, Im wondering what would be a good size on the journal file for a data=journal ext3 ? I can't find any reference to a "standard" value for other then ordered (8192 blocks). Please include my email in replies, Thanks in advance. -- echo '[q]sa[ln0=aln256%Pln256/snlbx]sb382793634903snlbx806007844 59087snlbx71765988876376snlbx11172185121099snlbx'|\dc