LinuxQuestions.org
Download your favorite Linux distribution at LQ ISO.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - General
User Name
Password
Linux - General This Linux forum is for general Linux questions and discussion.
If it is Linux Related and doesn't seem to fit in any other forum then this is the place.

Notices

Reply
 
LinkBack Search this Thread
Old 02-26-2003, 10:25 PM   #1
cmisip
Member
 
Registered: Aug 2002
Posts: 189

Rep: Reputation: 30
usb hard drive crash, kernel 2.4.20 and ext3 mount failure


I have a Redhat 8 with kernel 2.4.18-24. I have an external usb 2 hard drive. I am able to mount the hard drive and access the files, however after a few minutes of reading video data off of the usb drive, the system crashes. Hoping to increase the stability of the usb drive, I decide to go install the latest kernel 2.4.20. The install process went well, however, on the reboot, my ext3 data partition on top of an LVM would not get mounted. The os complains of wrong fs type or bad superblock or too many mounted parttions or something like that. I thought I hosed the data. Went back to 2.4.18-24 using Norton Ghost and a couple of reboots later Linux can mount and read the ext3 data partition. The problem seems to be specific to kernel 2.4.20. Any ideas how to improve the stability of the external usb 2 storage? How do you fix the ext3 problem in the latest kernel? Thanks
 
Old 03-04-2003, 01:48 AM   #2
NGraphiX
Member
 
Registered: Feb 2002
Location: Jerusalem, Israel
Distribution: Fedora Core 3
Posts: 154

Rep: Reputation: 30
hope this helps:

"Andrew Morton [interview] posted on the lkml, "In 2.4.20-pre5 an optimisation was made to the ext3 fsync function which can very easily cause file data corruption at unmount time". This bug only affects people using ext3 in the uncommon "data=journal" mode, or files operating under "chattr -j", and does not affect the 2.5 series of kernels.

... Until a proper fix can be developed, he recommends that people "please avoid ext3/data=journal". Since "data=journal" is not the default ext3 mode, it is unlikely most people running ext3 will be affected by this. However, it is a data corruption bug so you should double-check that you use either "data=ordered" or "data=writeback" as your ext3 mode of operation. "

although not directly related, it points to a prob with the ext3 fs
on the new kernel.
 
Old 03-04-2003, 07:59 PM   #3
cmisip
Member
 
Registered: Aug 2002
Posts: 189

Original Poster
Rep: Reputation: 30
Thanks. I decided to apply the pre4 patch to 2.4.20 and it works fine. While the usb storage seems more stable, it is still crash prone. My network is much more stable though and I have not needed to restart it for the past 24 hours and counting. I am intrigued by kernel 2.5.X though and wonder what the difference between this and the 2.4 kernel tree is.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Mount ext3 hard drive with umask=0 trpn Linux - General 6 09-13-2008 07:41 PM
how to mount a external hard drive in ext3 format? kuertensun Linux - Newbie 12 09-06-2005 06:51 PM
Cannot mount ext3 filesystem on damaged hard drive Mathieu_G Linux - Hardware 3 04-01-2005 10:51 PM
USB hard drive, how do I mount it? Oxyacetylene Debian 11 10-24-2004 06:00 PM
mount usb module then mount usb hard drive guanyu Linux - Hardware 1 10-08-2003 11:50 AM


All times are GMT -5. The time now is 06:41 AM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration