George Kola wrote: > Hi Erik, > Thanks for replying. How to get a hold of kernel 2.6.18-225.el5 ? It (or a later kernel) will be available to RHEL subscribers when released, and CentOS at some time after that, on their schedule. > I found 2.6.18-227 at http://people.redhat.com/jwilson/el5/227.el5/x86_64/ > I tried it and the bug is fixed is 2.6.18-227. Thanks for your help. > > This may be off-topic -- how do I find the changes from 2.6.18-194.17.4 > to 2.6.18-225 (or 2.6.18-227) ? I just want to know what other changes I > am installing in addition to the bug fix. The kernel RPM changelog has a general description of changes, usually with reference to bug numbers. -Eric > > Thanks, > George > > > On Fri, Oct 29, 2010 at 11:39 AM, Eric Sandeen <sandeen@xxxxxxxxxx > <mailto:sandeen@xxxxxxxxxx>> wrote: > > George Kola wrote: > > I am using RHEL (CentOS) 5.5 with kernel 2.6.18-194.17.4.el5 and > ext4. I > > posted to RHEL bugzilla and they requested me to post it here. > > > > ... > > > Steps to Reproduce: > > Have a program > > 1. Open a file on ext4 partition > > # touch testfile > > > 2. Fallocate space for that file say 20 GB > > # /root/fallocate -l 20g testfile > # df -h . > Filesystem Size Used Avail Use% Mounted on > /dev/sdb2 30G 21G 7.7G 73% /mnt/test > # du -h testfile > 21G testfile > > > 3. Write data to the file (but less than the allocated space) say > 10 GB > > # dd if=/dev/zero of=testfile bs=10M count=1024 conv=notrunc > 10737418240 bytes (11 GB) copied, 125.522 seconds, 85.5 MB/s > # du -h testfile > 21G testfile > # df -h . > Filesystem Size Used Avail Use% Mounted on > /dev/sdb2 30G 21G 7.7G 73% /mnt/test > > > 4. Close the file > > 5. Call truncate(file-path, size+1), truncate(file-path,size) on > that file > > to > > give up the space (observed that the space is given up using filefrag) > > 10g size I assume? Is the below representative? > > # /root/truncate 10737418241 testfile > # ls -l testfile > -rw-r--r-- 1 root root 10737418241 Oct 29 13:48 testfile > # /root/truncate 10737418240 testfile > # ls -l testfile > -rw-r--r-- 1 root root 10737418240 Oct 29 13:48 testfile > > > 6. Use du and df on that ext4 partition to find that the mismatch > > # df -h . > Filesystem Size Used Avail Use% Mounted on > /dev/sdb2 30G 11G 18G 37% /mnt/test > > # du -h testfile > 11G testfile > > # uname -a > Linux bear-05 2.6.18-225.el5 #1 SMP Mon Sep 27 10:32:19 EDT 2010 > x86_64 x86_64 x86_64 GNU/Linux > > Seems to work here, though there are ext4 updates in that kernel. > > -Eric > > > > > > > -George > > > > > > > > -- > > To unsubscribe from this list: send the line "unsubscribe > linux-ext4" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > <mailto:majordomo@xxxxxxxxxxxxxxx> > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
