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[Bug 595999] New: Problems with ext4 when writing large files
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Tue, 13 Apr 2010 07:00:16 +0000
  • Message-id: <bug-595999-21960@xxxxxxxxxxxxxxxxxxxxxxxx/>

Summary: Problems with ext4 when writing large files
Classification: openSUSE
Product: openSUSE 11.2
Version: Final
Platform: HP
OS/Version: openSUSE 11.2
Status: NEW
Severity: Normal
Priority: P5 - None
Component: Basesystem
AssignedTo: bnc-team-screening@xxxxxxxxxxxxxxxxxxxxxx
ReportedBy: kmeyer@xxxxxxxxx
QAContact: qa@xxxxxxx
Found By: ---
Blocker: ---

User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:
Gecko/20100401 Firefox/3.6.3 (.NET CLR 3.5.30729)

We are backing up our Exchange Server with ntbackup on a samba network share
which ist provided by a 64bit openSuSE 11.2 system. The backupfile is about 250
GB. The backup takes about 16 hours !!! to complete. The file system on our
openSuSE 11.2 is ext4. Backing up the same Exchange Server on the same machine
with SLES 11 and ext3 file system took about 9 hours.
We test the ext4 file system with other distributions as ubuntu. The amount of
time the backup needs was the same (16 hours). The ubuntu distribution contains
other versions of the kernel and samba as openSuSE 11.2. It seems that the ext4
file system is making this trouble. Now we are using a SLES 11 with ext3 and
the backup is about 9 hours.

Reproducible: Always

Steps to Reproduce:
1. mount a samba share on Windows Server 2003 Standard 64BIT with Exchange 2007
2. start ntbackup of Exchange Server 2007 to the samba share

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