ext3 is the default file system for many Linux distributions.

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954 views

After using lvextend, I can't recover unused space

I needed to add more disk space to my CentOS VM, so I added another virtual disk, then used lvextend to add the space to the existing partition. The steps I followed was: echo "- - -" > ...
2
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2answers
198 views

How many files can I have directly under a directory in ext3?

I have a root directory 'data_0'. Under this directory are about 15,000 directories ('a', 'b', 'c', ... 'aa', 'ab' ...). Under each of theses directories there are thousands of very small files ...
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2answers
2k views

How do I force ext3 partition to the “error” state?

I have a script where fsck is called in case filesystem is in "error" state only. I'd like to tests it. Unfortunatelly I don't know how to force "error" state on ext3 partition. The only one idea I ...
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3answers
1k views

Surprising corruption and never-ending fsck after resizing a filesystem

System in question has Debian Lenny installed, running a 2.6.27.38 kernel. System has 16Gb memory, and 8x1Tb drives running behind a 3Ware RAID card. The storage is managed via LVM, and is ...
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2answers
2k views

MySQL InnoDB ext3 block size

I'm looking for recommendations for ext3 filesystem block size for MySQL 5.6 using InnoDB. Running a CentOS 5.4 VM in VMware ESXi 5, VMFS 5 datastore on NetApp FibreChannel LUNs (which have 4k chunk ...
2
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1answer
349 views

How to repair a ext3 filesystem other than fsck

Are there any specialized/preferred tools to repair a filesystem for ext3 (or ext4) other than fsck.ext3, fsck.ext4? Thanks
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1answer
916 views

25TiB for /home from 16TiB, what to do with ext3?

I have recently lvextend my logical volume (where /home is) from 16TiB to 25TiB. However, when I try to run extend2fs on my /dev/vtrak/home, it complains that resize2fs 1.41.12 (17-May-2010) ...
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4answers
832 views

Huge directory, not files inside, but directory itself

I have been trying to delete a directory from a centos server using rm -Rf /root/FFDC for the past 15 hours and am having great difficulty. I can't do a directory listing because it hangs the system ...
2
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1answer
398 views

Xen virtual host is probably FSCKing - how do I verify?

I have a Xen virtual machine that has been running for over a year under a decent load. I restarted it this morning, and it's been several hours booting. I think it's FSCKing itself. xm list shows ...
2
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1answer
492 views

how to tell if a directory on ext3 is indexed already?

It's often recommended to enable dir_index option on ext3 filesystems e.g. with sudo tune2fs -O dir_index /dev/dm-1 However, existing directories on that filesystem are not converted to indexed ...
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3answers
5k views

NFS write performance

We have three VMware ESXi 4 hosts serving VM's from an OpenFiler NFS share. Every host has a direct gigabit connection to the NAS. Although read performance has been great, writing files inside the VM ...
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1answer
2k views

Do large folder sizes slow down IO performance?

We have a Linux server process that writes a few thousand files to a directory, deletes the files, and then writes a few thousand more files to the same directory without deleting the directory. What ...
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2answers
846 views

Trying to grok Linux quotas, where is the data stored?

So all the tutorials and documentation for the Linux quota system has left me confused. For each filesystem with quotas enabled/on where is the actual quota information stored? Is it filesystem ...
2
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2answers
449 views

ext3 file system failures after RAM upgrade

I have just added 2GB of RAM into my laptop and started getting problems with ext3 file system. I have tested the actual memory modules with MemTest86+, and they were fine. This issue also happens ...
2
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1answer
299 views

Replacement raid1 drive is one block smaller. What to do?

Apparently once should always leave a bit of empty space at the end of each raid1 partition. But if we're too late for that, what can be done if a replacement RAID1 drive is slightly smaller than the ...
2
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1answer
809 views

Relatime vs noatime for flash drives

I am running a web server off of a SheevaPlug, and the OS and system are stored on an SD card with an ext3 file system. I know that atime is a major source of writes that wear out flash memory. ...
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2answers
87 views

EXT3 File recovery after OS re-install

I know the probability of this is very low, but I have a 250G hard drive that I just reformatted and re-installed the OS on (centos, ext3). It turns out there was one large file (a 20G xen image) on ...
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3answers
4k views

How do I restore a partimage image to a smaller drive?

Without thinking, I made a partimage image of a ~1TB ext3 partition, which only actually contained about 2GB of data, so gzipped down to that size. I then wiped it and used it for something else. I'd ...
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3answers
45 views

How can I modify the wtime of ext filesystem

How can I modify the superblock of an ext filesystem so that I can set the field wtime (Last write time)? I've tried with debugfs: debugfs 1.42.9 (4-Feb-2014) debugfs: open /dev/sdd2 -w debugfs: ...
2
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1answer
226 views

SLES 11 recommended filesystem

We are upgrading some servers from SLES 10 to SLES 11 and I just saw that ext4 is not supported. Should I move to XFS or keep ext3? I will be moving the programs and databases to a new VM so ...
2
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1answer
325 views

Recover ext3 files from hard disk with bad sector

I have a folder of about 5GB that suddenly disappeared. When I checked its hard disk, I found out it has bad sector for about 2-3MB on this folder. Maybe it is on the folder's pointer. The partition ...
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2answers
144 views

Consolidate separate /var and swap drives back to / drive in CentOS

The genius that originally set up the web server at my company put the swap, /var, and / directories on different drive pairs. I need to some how consolidate all three into one drive for migration ...
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2answers
105 views

What is the best structure to save incremental subfolders?

I have 3 different folders containing particular information about sales orders. Everything was working fine but a few days ago I started having an issue about the amount of subdirectories in each of ...
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2answers
178 views

How come /bin/rm -rf /backups/hourly.5/ takes forever on a backup server?

They're simply hardlinks so the files shouldn't actually even be deleted. What options do I have? It even seems to take quite some load. I don't see how deleting 30.000 hard-links should take more ...
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2answers
2k views

Questions for Ext3/4 Features ( dir_index,filetype) and XFS File system Performance

I am developing an applications which reads huge list of directories and check file types using file command and using ext4 file system. When i look into Ext4 , i see it have two interesting features ...
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1answer
991 views

maildir in Windows for IMAP

I'm interested in accessing my IMAP accounts offline. I found that maildirs are a simple way to make it work. I found that [offlineimap] takes care of almost everything in making the IMAP->maildir ...
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2answers
3k views

Why should I switch to ext4 when upgrading to Ubuntu 9.10?

I'm going to upgrade from Ubuntu 9.04 to Ubuntu 9.10 in a near future and wanted to know if I should migrate my existing ext3 partitions to ext4 during the process and, if yes, why?
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1answer
335 views

ext4: Online resize not detected

On a RedHat 6 server, we ran into an issue with online resizing of an ext4 filesystem. With only /dev/sda we had 13GB available in the volume group, but needed 20GB more on one logical volume which ...
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2answers
157 views

Storing 64000+ files and growing in one folder (ext3)

I'm using a directory as a staging area for my files before shipping them to Amazon S3 buckets. This staging directory has no sub-directory structure /a/b/c or /year/month/day ... it's only files ...
2
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1answer
1k views

Mounting an LVM EXT3 dd in linux

I'm using Ubuntu and am getting an error that tells me the filesystem can not be identified when I try to mount a LVM ext3 disk. I'm passing "ext3" as the type and have been able to mount ext2 disks. ...
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1answer
2k views

Linux filesystem of VM becomes crash or read-only at Citrix XenServer

I read some answers related to this problems. Will the OS crash if the system partition can't be access for a short period? But I cannot solve this problem. When using ISCSI as Storage Repository ...
2
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1answer
483 views

Why does my external USB hard drive refuse to unmount after transferring large tar files to it?

I recently need to transfer large tar files to an external USB hard drive from one Red Hat ES 5 server to another (neither with network connectivity). Originally I was trying to move ~90gig tar file ...
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2answers
2k views

Recover deleted files in linux , can debugfs command solve my purpose?

I am trying to list deleted files from my ext3 file system. debugsfs command with -ld option , suppose to list deleted files but it only listing current existing files and folder. Is any alternate way ...
2
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1answer
694 views

e2fsck aborts: memory allocation failed

I am trying to fix a 9 TB filesystem with e2fsck, however the scan always fails after about 10% or so with the following error: Error storing directory block information: ... Memory allocation failed ...
2
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1answer
1k views

Is it possible to enable online resizing after the fs was created?

I have an Ext3 filesystem sitting on an LVM volume group. The partition was formatted before online resizing was enabled by default. Is it possible to turn this feature on after the fact, like ...
2
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2answers
2k views

how can i move ext3 partition to the beginning of drive without losing data?

I have a 500GB external drive. It had two partitions, each around 250GB. I removed the first partition. I'd like to move the 2nd to the left, so it consumes 100% of the drive. How can this be ...
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2answers
1k views

Change EXT3 stride and stripe-width settings post-install on CentOS 5.3

Is there a way to change the stride and stripe-width options on an ext3 file system under CentOS/RHEL 5.3? There's no way to specify it via anaconda during installation that I saw, and while I see ...
2
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1answer
1k views

Optimal Directory Depth vs Number of Files in a Directory for ext3?

To access files on ext3, and (if dir_index is not being used) what is the optimal directory depth vs the number of files per directory? Does file size effect this? The total number of files might be ...
2
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1answer
738 views

Debian package performance on XFS, btrfs, ext3, ext4

I did 4 clean installations of debian 6 and measured time of installing some average virtual package. FS options are default. time apt-get install build-essential I got very strange results ...
2
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1answer
124 views

Recovering the remainder of an ext3 volume spread over multiple lvm physical volumes

I have an LVM logical volume spread over eight separate physical volumes on Amazon AWS. The logical volume is formatted using ext3. One of my physical volumes has failed. Is there any way to recover ...
2
votes
1answer
142 views

double mount check with ext3

I have two nodes connected to a SAN, and I want to be able to mount an ext3 partition on node B when node A goes down. I know I could use a shared filesystem, but for simplicity and performance I ...
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0answers
359 views

Updating OpenBoot PROM on Sun Fire v440

After i have updated ALOM firmware on Sun Fire v440, i decided to update OpenBoot PROM, but when i try to load the patch using boot disk /flash-update-SunFire440 i get: SILO Fatal Error: Multiple ...
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2answers
1k views

How to copy directories using debugfs?

The debugfs manpage gives the impression that the command 'rdump . .' will recursively copy all files found on the specified filesystem from the debugfs cwd to the native filesystem's cwd. Instead I ...
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2answers
520 views

File system for a lot of small files

I'm using NetApp device as a NAS storage. I have a lot of small files (30-60k) and dirs. For example I have: 30000 dirs with another 1000-2000 dirs. A lot of dirs are empty, but most of them have ...
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3answers
361 views

Compact Flash mounted Read Only

I have a board, running linux (RedHat, kernel: 2.4.32). The board has been up and running since long time. However suddenly, some errors are being observed in the logs, and the Compact Flash (present ...
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3answers
4k views

Convert an ext4 partition to ext3 without formatting the HDD

I would like to convert an ext4 partition to ext3 partition without formatting the HDD. Is this possible and recommended?
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1answer
778 views

Hard disk error

There seems to be something wrong with my hard drive, but I'm not sure what, or how to proceed. The first sign of any problems was this: I tried making a new directory on my server, but when I did ...
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3answers
100 views

ext3 Journalling

Does only the metadata get journalled in ext3 or does the data get journalled too?
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2answers
183 views

Join files effectively on Linux

Is there a better way to join files that have been splitted than just doing a "cat" or "join"? These commands just copy the file streams into a new file on disk. A much better way would be ...
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1answer
167 views

Reclaiming Space That 'df' Says Should Be Available

I have a linux server hosted on one of Rackspace's CloudServers and it is showing that I have both no room available, yet also shows I have 12GB not used on the root partition. This server's only job ...