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Questions tagged [ext4]

The ext4 or fourth extended filesystem is a journaling file system for linux/*nix developed as the successor to ext3.

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rsnapshot ext4 to ext2 input output error

When making a rsnapshot backup from a ext4 to a ext2 filesystem, about 90% of the files cannot be opened and produce Input/Output errors. When the target is ext4 too, it works flawless. Any ideas how I can fix that? Clarification: The backup runs…
Zulakis
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file read performance degrades as number of files increases

We're observing poor file read IO results that we'd like to better understand. We can use fio to write 100 files with a sustained aggregate throughput of ~700MB/s. When we switch the test to read instead of write, the aggregate throughput is only…
bfallik-bamboom
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Ext4 self errors after some time on CentOS 5.8 64-bit

I get such warnings in dmesg: EXT4-fs error (device md2): mb_free_blocks: double-free of inode 0's block 602619328(bit 15808 in group EXT4-fs error (device md2): mb_free_blocks: double-free of inode 0's block 602619329(bit 15809 in group EXT4-fs…
Spacedust
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Can I Install ext4 via Debian 6.0.2 and update for stability?

I am installing Debian 6.0.2.1 (because that's the CD I found in my CD wallet and I don't want to wait to download a newer version [6.5 is newest at time of writing]). I am choosing ext4 for my FS; once the install is complete I will update all the…
jwbensley
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Trade reliability for speed in a slow filesystem

On my box running Ubuntu Server 11.10 I have a rather slow soft RAID6 array on four USB sticks (and no other means for persistent storage). I want a faster filesystem on that box. I'm OK if I'd lose some data in emergency situation, but I'd prefer…
Alexander Gladysh
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ext4 filesystem broken

I have a synology nas with an internal hdd (a 2TB wd ears). This drive has SMART errors. I took the drive and build it in a external USB case. Then i booted Linux mint and tried to mount the data partition: $ mount -t ext4 /dev/sdc5 [ 5875.123929]…
Max Berthold
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Problems with degraded RAID arrays

My Ubuntu backup server was recently upgraded in storage space to a RAID 10 array... now it consists of 8T of raw drive space which was before 2T of space. But I have been having trouble when it actually goes into production and starts backing up my…
donjon
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Not able to mount ext4 file-system in Debian Lenny

I am trying to mount ext4 EBS volume in to my EC2 instance in Debian OS, whenever I try to mount I get the following error: mount: unknown filesystem type 'ext4' I googled around and found a link to the solution:…
Rakesh Sankar
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Convert ext4 partition to NTFS

Is there a tool or command to achieve it? I did some search around here I didn’t find the answer. Is that possible? I must mention that my ext4 drive that I want to convert have data so it must just convert it and not format it
Amir Ashkenazi
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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 I tried following command to understand what make…
bman
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Appropriate Linux (ubuntu 10.04) FS type for rapid FS management many small files and directories

Possible Duplicate: Linux's best filesystem to work with 10000's of files without overloading the system I/O I have an 240gb image store of approximately 1.5 million entries. About half of these entries are image files (4 to 100kb) and the other…
Michael Pearson
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BackupPC back-up has not been finished in 12 hours(!)

I installed BackupPC toda on a server and set it to do a back-up 12 hours ago... while it's been backing up since, it seems very very slow and it's not completed yet. It's just backing up a testserver with a total disk usage of 1.8GB. What could…
ujjain
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Recover ext4 file

How to recover recently deleted file from ex4 partition? Mashine hosts Open SUSE 11.2 (kernel 2.6.31)
dimba
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[Fedora 14][LVM2&EXT4] Overwritten partition config

Accidentally, I deleted my '/etc' & '/bin' folder (I know, my fault). Then, I boot liveCD and tried to copy or fix this issue. And then when I can't figure nothing to fix it, I don't know why, I want install system on my existing system, and I…
user78428
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how to make ext4 more reliable?

As ext4 introduced more reliability than ext3 with block journals, is there any chance to suppose it 100% reliable? What if enabling block journaling on it, which is disabled by default? I have an embedded linux device, after installation keyboard…
amin
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