<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:p="urn:schemas-microsoft-com:office:powerpoint" xmlns:a="urn:schemas-microsoft-com:office:access" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:s="uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882" xmlns:rs="urn:schemas-microsoft-com:rowset" xmlns:z="#RowsetSchema" xmlns:b="urn:schemas-microsoft-com:office:publisher" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:c="urn:schemas-microsoft-com:office:component:spreadsheet" xmlns:odc="urn:schemas-microsoft-com:office:odc" xmlns:oa="urn:schemas-microsoft-com:office:activation" xmlns:html="http://www.w3.org/TR/REC-html40" xmlns:q="http://schemas.xmlsoap.org/soap/envelope/" xmlns:rtc="http://microsoft.com/officenet/conferencing" xmlns:D="DAV:" xmlns:Repl="http://schemas.microsoft.com/repl/" xmlns:mt="http://schemas.microsoft.com/sharepoint/soap/meetings/" xmlns:x2="http://schemas.microsoft.com/office/excel/2003/xml" xmlns:ppda="http://www.passport.com/NameSpace.xsd" xmlns:ois="http://schemas.microsoft.com/sharepoint/soap/ois/" xmlns:dir="http://schemas.microsoft.com/sharepoint/soap/directory/" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:dsp="http://schemas.microsoft.com/sharepoint/dsp" xmlns:udc="http://schemas.microsoft.com/data/udc" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:sub="http://schemas.microsoft.com/sharepoint/soap/2002/1/alerts/" xmlns:ec="http://www.w3.org/2001/04/xmlenc#" xmlns:sp="http://schemas.microsoft.com/sharepoint/" xmlns:sps="http://schemas.microsoft.com/sharepoint/soap/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:udcs="http://schemas.microsoft.com/data/udc/soap" xmlns:udcxf="http://schemas.microsoft.com/data/udc/xmlfile" xmlns:udcp2p="http://schemas.microsoft.com/data/udc/parttopart" xmlns:wf="http://schemas.microsoft.com/sharepoint/soap/workflow/" xmlns:dsss="http://schemas.microsoft.com/office/2006/digsig-setup" xmlns:dssi="http://schemas.microsoft.com/office/2006/digsig" xmlns:mdssi="http://schemas.openxmlformats.org/package/2006/digital-signature" xmlns:mver="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns:mrels="http://schemas.openxmlformats.org/package/2006/relationships" xmlns:spwp="http://microsoft.com/sharepoint/webpartpages" xmlns:ex12t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:ex12m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:pptsl="http://schemas.microsoft.com/sharepoint/soap/SlideLibrary/" xmlns:spsl="http://microsoft.com/webservices/SharePointPortalServer/PublishedLinksService" xmlns:Z="urn:schemas-microsoft-com:" xmlns:st="" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>To Developers,<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>I have seen a different behaviour in XFS <o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>Suppose I have a file with inode number "131", I have noticed that the inode number of file got changed without deleting the file. When we change the data of the file everytime it changes the inode number. The complete description over the test is as follows <o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>Steps are as follows:<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>1) I have created a file using "dd" of size 100MB:<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>#dd if=/dev/zero of=xfs.img bs=1M count=100<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>2) Created a loopback device over the image:<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>#losetup /dev/loop1 xfs.img<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>3) Created file system:<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>#mkfs.xfs /dev/loop1 <o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>4) Mounted:<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>#mount /dev/loop1 /mnt/xfs_mnt <o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>5) Please check the mount output:<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'># mount<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>/dev/sdb2 on / type ext3 (rw,acl,user_xattr)<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>proc on /proc type proc (rw)<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>sysfs on /sys type sysfs (rw)<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>debugfs on /sys/kernel/debug type debugfs (rw)<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>devtmpfs on /dev type devtmpfs (rw,mode=0755)<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>tmpfs on /dev/shm type tmpfs (rw,mode=1777)<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>devpts on /dev/pts type devpts (rw,mode=0620,gid=5)<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>fusectl on /sys/fs/fuse/connections type fusectl (rw)<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>rpc_pipefs on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>/dev/loop0 on /mnt/mount_test type xfs (rw)<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>/dev/loop1 on /mnt/xfs_mnt type xfs (rw)<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>6) Created a file using "touch"<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'># touch kundra.txt<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>7) Checking the file and its inode number:<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'># ls -li <o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>total 0<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>131 -rw-r--r-- 1 root root 0 2012-10-20 01:41 kundra.txt<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>8) I have written some data using the vim editor, I can't provide snapshot of vim on the list:<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>#vim kundra.txt<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>9) Now I checked the inode number using the "ls -li"<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'># ls -li<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>total 4<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>133 -rw-r--r-- 1 root root 19 2012-10-20 01:43 kundra.txt<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>Please check that the inode number ( from "131" to "133" ) and total value (from "0" to "4" )in the filesystem got changed, I am assuming that the reasom may be due to filesystem of small size but it is showing unexpected behaviour. <o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>Please provide some description over this issue, I am working on Linux SLES <o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'># cat /etc/issue<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>Welcome to SUSE Linux Enterprise Server 11 SP1 (x86_64) - Kernel \r (\l).<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'># uname -a <o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>Linux linux-sles 2.6.32.19-0.6-default #1 SMP Fri Aug 31 01:37:50 IST 2012 x86_64 x86_64 x86_64 GNU/Linux<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>Thanks & Best Regards <o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Courier New"'>Anshul Kundra<o:p></o:p></span></p></div><span style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: gray; FONT-SIZE: 7.5pt; mso-fareast-font-family: 'Times New Roman'">
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