similar to: ext3

Hello, I am using kernel version 2.4.7-10 I upgraded one of the ext2 partition to ext3. the partitions are nearly empty. I ran a program to create empty files, having names in lexicographical order. The time taken to create empty files (100 .. 100000) is same on an ext2 partition and a ext3 partition. Can anyone pls. tell me why there is no difference in the time taken. Is the htree algo.

I hope this is the right list. I have created an ext2 filesystem and removed the dir_index feature. I don't know if this kind of experimentation is going to help me learn something about filesystems or not. Well what is dir_index? Then I ran e2fsck -f -v -pD and the /dev file. Now what did I remove? Htree. I guess it can always be put back and it's on an experimental filesystem.

I have just been thru rebuilding a server that had been suffering severe performance problems. I transferred the partitions to another hard drive, copying into freshly formatted filesystems. This made a HUGE difference in performance. One key directory structure stores email messages in an structure where there is a directory for each mail account, and the messages are stored in

hi i got 2 questions and maybe someone could shed some light: a) i'm using kernel 2.4.17 and use ext3 in it. is it possible that the whole system is slower than with ext2? i switched back to ext2 (great feature!!!) and the system's response seemed somewhat better. should/could there be such a effect as double writing of journaled data? i didnt activate debugging (jbd). b) is reiserfs

* "Bill Cunningham" <billcun@suddenlink.net> hat geschrieben: > I hope this is the right list. I have created an ext2 filesystem and > removed the dir_index feature. I don't know if this kind of experimentation > is going to help me learn something about filesystems or not. Well what is > dir_index? Then I ran e2fsck -f -v -pD and the /dev file. Now what did I >

There's a new set of ext2/3 patches for 2.4.21-pre5 available at: http://thunk.org/tytso/linux/extfs-2.4-update/extfs-update-2.4.21pre5-2 and in broken out form at: http://thunk.org/tytso/linux/extfs-2.4-update/broken-out-2.4.21pre5-2 New to this patch set include: * A kludge to help htree work well with Linux's NFS implementation * Allow the orlov allocator to be disabled via a

I work with a MySQL installation containing several thousand databases. MySQL represents each database as a seperate sub-directory of the main MySQL data directory. As the number of databases increases it seems that the time to connect is increasing significantly and I believe this is probably due to the time necessary to search through the large number of directory entries. It has been

Hi, I'm working with Prof. Zadok on versionfs, a stackable versioning file system. I face some problems with the unlink operation on ext3 with htree. On an unlink, I make a copy of the file (version/backup) and unlink the original file. But some files that have been unlinked are "linked back" to another file. For example, on deleting the file 'foo', the file itself is

I post a patch for comment on ext2-devel for the NFS cookie bug. Did not get any feedback yet. As Ted suggested, it set the cookie to -1 on EOF, even though it is not seek able to there. I only test it with Stephen's "readdir.c". Not have chance to run it on a NFS server yet. Do you have more information about the cache trashing bug? Regards, Chris ===== dir.c 1.5 vs edited

Hi, I have a doubt in the ordering of writes in ext3. Any help is appreciated. Ext3 enforces certain ordering in writes to ensure data integrity. For example, the journal writes are issued first and only after their successful completion the actual writes are issued. Sometimes we need to maintain ordering across transactions also. This is needed because if the actual writes of one transaction

Forgive my novice question, but I am a new student of Linux working on presenting the ext3 journaling filesystem to my class. I seek any advice on how to visibly demonstrate (including a purposeful crash of a Linux box) the benefits of ext3 over ext2. I am not worthy to lick the bootstraps of this group, but I beg for any help! The problem I am having extends to even locating the .journal file

Hello! I'm using a CompactFlash as storage device. Since those CF cards only have limited write cycles (CF does wear-levelling by itself, but you don't want to write too many timet so the card) i was wondering by what a factor the journaling of ext3 increases the write accesses to the CompactFlash compared to ext2. Thanks a lot already for your help! Sincerely Chris Braun

I have a software RAID1 underlying the ext3 filesystem on my laptop. This was using xfs, which took advantage of the mirroring very well, but that didn't leave me feeling very comfortable about the reliability of the system; no fsck was not a nice feeling. Now that I have moved to ext3, I very seldom see the mirroring being taken advantage of, and the system responds a lot more slowly if

I run a decent amount of 3ware hardware, all under centos-4. There seems to be some sort of fundamental disagreement between ext3 and 3ware's hardware RAID5 mode that trashes write performance. As a representative example, one current setup is 2 9550SX-12 boards in hardware RAID5 mode (256KB stripe size) with a software RAID0 stripe on top (also 256KB chunks). bonnie++ results look

Hi, Is it possible to use a separate journal device (one on a separate drive or a partition) shared among more than 1 Ext3 file systems ? I appreciate any inputs. thanks, Vijayan

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Thursday 14 June 2001 13:05, Rick Sivernell babbled: > Doug > > Educate me please. What is the diff between ext2 & 3. I am using reiserfs > now and do like it. But I do like to have the stuff going, if I can. Be warned, I know nothing about reiserfs other than what I've read. short version: ext3 is a further development of

Apologies for the newbie question: I have a (stock) 2.4.20 build (*not* -ac), and I'm trying to work with large ext3 directories. By large, I mean 160,000 files per directory. (Yes, I know it would be better in nested directories but such is life). I feel htree would benefit me. Close reading of the 2.4 changelog suggests that htree isn't in there - only a patch to prevent non-htree

Hi! I would like to know how well ext3/(ext2) will tolerate underlaying errors (I am planning to use loop-AES backed ext3 fs). So if there is 1024 bytes corruption of data what will be the worst case: - If this data belongs to some file, this part of data(file) has been lost? - If this data belongs to superblock, I have to repair ext3 and use another superblock? - If this data belongs to

Hi, I have a question on fsync() and ext3's journaling modes. Assume that I call fsync(fd) on a file. If that file is in 'data=journal' mode, would the fsync() return once the data gets safely into the journal ? On the other hand, if that file is in 'data=writeback' mode, would the fsync() return only when the data gets safely into its actual location ? Any help is

I am running postfix on RH machine. decided to upgrade one of my machines from 7.1 to 7.2 - performance drop of 75 percent !!!!! moved back to ext2(remount partition as ext2) - performance is back. on the 7.1 upgraded to ext3 (only the disks), rebooted - performance drop of 70 percent... used a 2.4.17 kernel compiled by myself - a little faster then the last RH kernel, but still runs at third