ext3 is the default file system for many Linux distributions.

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Recover data from EXT3 filesystem

Our junior sysadmin accidently deleted some of the directories. Can anyone please suggest any free/proprietary application to recover files from an EXT3 filesystem (RHEL 5.x) ?
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1answer
187 views

“hot swapping” linux md raid1 - does re-mounting file-system temporarily read-only enable safe disconnection?

There's is an ext3 filesystem on top of Linux md raid1, array consists of two hard drives. Various services, including databases run on and write to it. Let's say for argument's sake that to minimize ...
2
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2answers
171 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
153 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 ...
2
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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 ...
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2answers
523 views

Filesystem performance tuning options for ext3

I have a brand new server w/48G RAM which I am going to use as a DB server. I don't expect problems with disk reads, but I definitely would like to optimize for write intensive load patterns. The ...
2
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0answers
446 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 ...
5
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2answers
165 views

Slower/cached Linux file system required

I know it sounds odd but I need a slower or cached filesystem. I have a lot of firewalls that are syslog'ing their data to a pair of Linux VMs which write these files to their 'local' (actually FC ...
2
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2answers
185 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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5answers
6k views

How to convert a reiserfs partition to ext3?

Is there a tool to convert a reiserfs partition to ext3?
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1answer
2k 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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3answers
6k views

How to fsck.ext3 a TrueCrypt Volume?

I have a truecrypt file that contains an ext3 file system. Not sure exactly how to word this, but is there a way I can mount the truecrypt volume without actually mounting the filesystem within it so ...
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1answer
166 views

Best practices for choosing fs fragment size etc [closed]

Related question about block sizes, but there are many many other options when creating an ext3 filesystem. I think the other question has an answer with great advice of block size, that it general ...
5
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2answers
269 views

How to compact large directories

Is there a way to compact a very large directory under EXT2/EXT3 without simply remaking the directory? I recall that perlfunc cautions that the OS implementations of seekdir and telldir run the risk ...
2
votes
2answers
4k views

Server Frequently gets Read-Only File System

This server has RAID-1 configured. It get readonly file system everyday. if i reboot it, it gets back with a read-write file system. but after a short while, readonly again... Any idea please? ...
5
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3answers
3k views

Convert a software raid volume from ext3 to ext4 (or ext2)?

I have an mdadm created software raid volume in my ubuntu linux 11 machine. It is NOT the boot drive. It is a software raid 5 configuration made from 3 large sata drives. When I created it ...
0
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1answer
830 views

EXT3-FS: error (loop0) ext3_lookup unlinking inode

Running CentOS 5.6 with mdadm RAID1, 2TB, 3 partitions (boot, swap and root). I had a kernel panic in the server, and after rebooting, the system stays up for about 5-10 minutes, the it starts ...
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1answer
914 views

How to diagnose very bad and slow ext3 behavior?

I'm managing an old admin server running Redhat WS4 update 3, and we have an ext3 volume where I had a large (30GB) sqlite database mounted on /opt. Everytime I do large queries/inserts into this ...
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2answers
308 views

Convert Ext3 to Ext4 Filesystem failed because I cannot umount drive

I want to convert my Filesystem from Ext3 to Ext4 because of 32000 directory limit of Ext3. But when I want to umount the drive I get this error: umount: /: device is busy umount: /: device is busy ...
5
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1answer
252 views

upgrading ext3 fs on ubuntu 8.04

so we are stuck with this closed source system that keeps on adding folders to one directory, and it's going to hit the 32k limit soon because it's ext3. and that folder is expected to have +100k ...
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2answers
140 views

Directory in Linux(ext3) with only 2 files occupies 32000 blocks(16Mbytes)

IIRC my Operating Systems classes, the size of a directory in Linux is given by the number of files it contains([wikipedia link])1 So, why a directory with only 2 files occupies 32000 blocks? # stat ...
4
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3answers
2k views

how do I convert a live root ext3 filesystem to ext4?

I have a root filesystem thats live and mounted and I'd like to convert it to ext4. All the howto's i've read deal with booting off a live CD but thats not an option.
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2answers
205 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 ...
4
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3answers
26k views

Read-only root file system - ext3 error?

I have a problem with ext3 filesystem. It's not writable and I can't remount it. # echo 1 > /file -bash: /file: Read-only file system # mount /dev/mapper/VolGroup00-LogVol00 on / type ext3 (rw) # ...
3
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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 ...
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2answers
89 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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2answers
97 views

System crashes after ext3_block_to_path

I have some soft which runs by cron. But once per day system crashes and only reboot helps. This is the latest log (/var/log/syslog) before crashing: Jul 31 05:00:01 T217 /USR/SBIN/CRON[22629]: ...
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2answers
8k views

Production-ready, highly reliable filesystems on Linux: ext4 ext3 XFS or JFS (or ZFS)?

The last real question I've seen on this topic is from about two years ago (is ext4 ready for production usage). In the intervening time, how has ext4 improved? XFS, JFS, and ext3 are the standby ...
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1answer
793 views

How to investigate frequent but dissimilar data-loss events

I have a Xen domU provided by a third party, running Ubuntu (10.04, server edition, stock -server kernel). This server runs Dovecot and Exim4, with mail stored in Maildirs, and runs a fairly typical ...
2
votes
1answer
368 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
3k views

How to increase filename size limit on EXT3 (on ubuntu)

The default limit of how long a filename can be on EXT3 is 255 characters. I have a unique requirement where I need much longer filenames (apparently because mod_rewrite of apache uses filenames for ...
2
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3answers
8k 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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2answers
3k views

Resizing lvm2 logical volume and file system: Exact sizes?

On my intranet server, I have a 100.00 GiB partition /dev/sda5, which I use as a physical volume for lvm2. It's the only physical volume in my volume group vg01. vg01 currently contains one logical ...
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2answers
805 views

VMWare with physical partions in a dynamic disk?

Background: Host OS is Windows Vista. Guest OS is Ubuntu VMWare can give direct access to a guest OS to a physical disk partition, so say my disk has two partitions, the first is NTFS and has windows ...
0
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1answer
142 views

HDD Partitionning on a live system under Debian and ext3

I have my server running under Debian using ext3. All the whole root is into a single main partition on a single hard drive. I would like to create a second ext3 partition on the same hard drive. So ...
3
votes
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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7answers
6k views

Good filesystem for 20TB hardware-controlled RAID5 array?

What's the best file system for Ubuntu 10.10 assuming the average filesize is 8-30GB with no more than 1-2 users accessing the array at any given time?
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3answers
5k views

Ext3 Keeps getting Journal Error and Becoming Read-Only

I have a RHEL5.5 x86_64 server with 2 HBA connecting to EMC and HP storage arrays. EMC PowerPath is installed because my EMC vendor insists on that. My problem is the volumes on HP storage often ...
0
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1answer
723 views

Joomla Editor not working after restoring mysql database

I've made a big mistake on one of my sites and I've deleted accidentally several files from our site's joomla directory. The database was Ok, so what I tried to do was to create a Joomla installation ...
0
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1answer
2k views

Problem fixing ext3 root file system using fsck on CentOS 5

When I run a read-only fsck on the mounted root partition of a CentOS 5 server, it finds a number of errors. However, running a forced check upon next boot does not find any! Here are the results of ...
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3answers
132 views

directories with two one dot (.) entries

I'm trying to clean up my lost and found, and I've managed to remove most things, but I'm left with "almost" empty directories, like: lost+found/#14042862: total 1324 dr---wx--- 2 76040 43010 ...
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1answer
2k views

Disabling journal on a mounted ext3

I'm shredding files on large ext3 file systems (e.g. see this article for how I do this). In order to achieve this I need to mount the ext3 file systems without journaling. To most of them I get by ...
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2answers
254 views

Cyclical / rhythmic disk I/O statistics: (activity increasing monotonically)

I have got a unique problem with one of my servers. The disk I/O statistic is consistently increasing for last couple of weeks. See this graph from Munin: From Linode's dashboard, I see a more ...
1
vote
1answer
316 views

pvcreate on a ext3 partition, is it dangerous?

I know pvcreate a LVM physical volume usually on a LVM partition, but I do a pvcreate on a empty ext3 partition accidentally, is this dangerous, do I really need to repartition with LVM format on the ...
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4answers
558 views

Log file is missing, how can I see that and what happened to it

A process identified by process id 2147 is running, but its logfile is nowhere to be found. The filesystem is ext3 and 100MB of space remains. nothing went wrong in process 2147. An lsof of process ...
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3answers
106 views

ext3 Journalling

Does only the metadata get journalled in ext3 or does the data get journalled too?
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1answer
250 views

How to change switch to a different root partition

I am using AWS EC2 instance with Ubuntu 10.04 installed on it. I start with the instace which has its root partition at /dev/sda1. Later I want to attch a new EBS volume at /dev/sdb1 and want to get ...
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2answers
211 views

Howto maintain an EXT3 filesystem

Lately I had several servers which encountered a write error on an EXT3 filesystem and as a result of that remounted the filesystem read-only. Understandably on a production server this causes severe ...
2
votes
1answer
524 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
992 views

How do I improve my incremental-backup performance?

I'm currently using the traditional rsync+cp -al method to create incremental/snapshot backups of our server tree. The backups are going onto a pair of eight-disk towers connected to the backup ...