<div dir="ltr"><div dir="ltr"><div class=""><span class="im"><div style="font-family:arial,sans-serif;font-size:13px">Hi,</div><div style="font-family:arial,sans-serif;font-size:13px"><br></div><span style="font-family:arial,sans-serif;font-size:13px"><div>We've now resumed working on the xfs_fsr utility as discussed before, after our exams.</div><div><br></div><div>The first task that we undertook was to use fiemap to get file extent </div></span><span style="font-family:arial,sans-serif;font-size:13px">mappings and tried to correlate the output with the information obtained<br></span><div style="font-family:arial,sans-serif;font-size:13px">from xfs_bmap. For this we used the two underlying structures fiemap<div>and fiemap_extent. We're now trying to use the available free space mapping</div><div>patches to get free spaces in the file system.</div><div><br></div>We also wanted to ask about the current status of the rmap, as we'll<div>be required to define the interfaces that query it, as a key component of our</div><div>work.</div><div><br></div><div>Regards,</div><div>A-DRS.</div><div><br></div></div></span></div></div><div class=""><div class="adm" style="font-family:arial,sans-serif;font-size:13px"></div><div class="im" style="font-family:arial,sans-serif;font-size:13px"></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Dec 1, 2014 at 1:01 AM, Swapnil Pimpale <span dir="ltr"><<a href="mailto:pimpale.swapnil@gmail.com" target="_blank">pimpale.swapnil@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Just say that you have resumed work on the project after the exam.</div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5">On Sun, Nov 30, 2014 at 2:16 PM, Somdeep Dey <span dir="ltr"><<a href="mailto:somdeepdey10@gmail.com" target="_blank">somdeepdey10@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div dir="ltr"><div style="font-family:arial,sans-serif;font-size:13px;color:rgb(80,0,80)">This is the final draft : </div><div style="font-family:arial,sans-serif;font-size:13px;color:rgb(80,0,80)">Hi,</div><div style="font-family:arial,sans-serif;font-size:13px;color:rgb(80,0,80)">We were occupied with our exams for the last two months.</div><span><span style="font-family:arial,sans-serif;font-size:13px"><div>We've now resumed working on the xfs_fsr utility as discussed before.</div><div><br></div><div>The first task that we undertook was to use fiemap to get file extent </div></span></span><span><span style="font-family:arial,sans-serif;font-size:13px">mappings and tried to correlate the output with the information obtained<br></span></span><div style="font-family:arial,sans-serif;font-size:13px;color:rgb(80,0,80)"><span><span>from xfs_bmap. For this we used the two underlying structures fiemap</span></span><div>and fiemap_extent. We're now trying to use the available free space mapping</div><span><span><div>patches to get free spaces in the file system.</div><div><br></div></span></span><span><span>We also wanted to ask about the current status of the rmap, as we'll</span></span><div>be required to define the interfaces that query it, as a key component of our</div><div>work.</div><div><br></div><div>Regards,</div><div>A-DRS.</div></div></div><div class="gmail_extra"><br><div class="gmail_quote"><span>On Sun, Nov 30, 2014 at 11:55 PM, Somdeep Dey <span dir="ltr"><<a href="mailto:somdeepdey10@gmail.com" target="_blank">somdeepdey10@gmail.com</a>></span> wrote:<br></span><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div style="color:rgb(80,0,80);font-family:arial,sans-serif;font-size:13px">Hi,</div><div style="color:rgb(80,0,80);font-family:arial,sans-serif;font-size:13px">We were occupied with our exams for the last two months.</div><span><span><div style="color:rgb(80,0,80);font-family:arial,sans-serif;font-size:13px">We've now resumed working on the xfs_fsr utility as discussed before.</div><div style="color:rgb(80,0,80);font-family:arial,sans-serif;font-size:13px"><br></div><div style="color:rgb(80,0,80);font-family:arial,sans-serif;font-size:13px">The first task that we undertook was to use fiemap to get file extent </div></span></span><span><span><div style="color:rgb(80,0,80);font-family:arial,sans-serif;font-size:13px">mappings and tried to correlate the output with the information obtained<br></div></span></span><div style="color:rgb(80,0,80);font-family:arial,sans-serif;font-size:13px"><span><span><div>from xfs_bmap. For this we used the two underlying structures fiemap</div></span></span><div>and fiemap_extent. We're now trying to use the available free space mapping</div><span><span><div>patches to get free spaces in the file system.</div><div><br></div></span></span><span><span><div>We also wanted to ask about the current status of the rmap, as we'll</div></span></span><div>be required to define the interfaces that query it, as a key component of our</div><div>work.</div><div><br></div><div>Regards,</div><div>A-DRS.</div></div></div><div><div><div><div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Nov 30, 2014 at 9:37 PM, Nafisa Mandliwala <span dir="ltr"><<a href="mailto:nafisa.mandliwala@gmail.com" target="_blank">nafisa.mandliwala@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Umm, no need to apologize.<div><br></div><div>What you showed me on Thursday was the standard fiemap ioctl that gives the extents used by a file.</div><div>Say that you're now trying to use Dave's freespace mapping patches to get free spaces in the file system.</div><div>Also, you're going to <span style="font-family:arial,sans-serif;font-size:13px"><b><i>define</i></b> the interfaces needed to query </span><span style="font-family:arial,sans-serif;font-size:13px">the rmap, not just query them.</span></div><div><br></div><div>Looks fine otherwise.</div></div><div><div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Nov 30, 2014 at 9:16 PM, Somdeep Dey <span dir="ltr"><<a href="mailto:somdeepdey10@gmail.com" target="_blank">somdeepdey10@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><span><div dir="ltr" style="font-family:arial,sans-serif;font-size:13px"><div>Hi,<br></div><div>This is the mail we drafted for Dave : </div><div><br></div><div>Hi,</div><div>We'd like to apologise for our unavailability over the last two months</div><div>given the occurrence of our exams. We've now resumed working on the xfs_fsr utility as discussed before.</div><div><br></div><div>The first task that we undertook was to use fiemap to get file extent </div><div><img src="https://ssl.gstatic.com/ui/v1/icons/mail/images/cleardot.gif"></div><div><div>mappings and tried to correlate the output with the information obtained</div><div>from xfs_bmap. For this we used the two underlying structures fiemap</div><div>and fiemap_extent.</div><div><br></div><div>We also wanted to ask about the current status of the rmap, as we'll</div><div>be required to query the interfaces of that as a key component of our</div><div>work.</div><div><br></div><div>Regards,</div><div>A-DRS.</div><div><br></div><div><br></div><div>Do tell us if this will suffice.</div><div>Thanks,</div><div>A-DRS.</div></div></div></span><div style="font-family:arial,sans-serif;font-size:13px"><div><img src="https://ssl.gstatic.com/ui/v1/icons/mail/images/cleardot.gif"></div></div></div><div><div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Nov 30, 2014 at 9:05 PM, Somdeep Dey <span dir="ltr"><<a href="mailto:somdeepdey10@gmail.com" target="_blank">somdeepdey10@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><span style="font-family:arial,sans-serif;font-size:13px"><div>Hi,<br></div><div>This is the mail we drafted for Dave : </div><div><br></div><div>Hi,</div><div>We'd like to apologise for our unavailability over the last two months</div></span><div style="font-family:arial,sans-serif;font-size:13px">given the occurrence of our exams. We've now resumed working on the xfs_fsr utility as discussed before.</div><div style="font-family:arial,sans-serif;font-size:13px"><br></div><div style="font-family:arial,sans-serif;font-size:13px">The first task that we undertook was to use fiemap to get file extent </div><div style="font-family:arial,sans-serif;font-size:13px"><div><img src="https://ssl.gstatic.com/ui/v1/icons/mail/images/cleardot.gif"></div></div><div style="font-family:arial,sans-serif;font-size:13px"><span><div>mappings and tried to correlate the output with the information obtained</div><div>from xfs_bmap. For this we used the two underlying structures fiemap</div><div>and fiemap_extent.</div><div><br></div><div>We also wanted to ask about the current status of the rmap, as we'll</div><div>be required to query the interfaces of that as a key component of our</div><div>work.</div><div><br></div><div>Regards,</div><div>A-DRS.</div><div><br></div><div><br></div><div>Do tell us if this will suffice.</div><div>Thanks,</div><div>A-DRS.</div></span></div></div><div><div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Nov 27, 2014 at 9:39 PM, Nafisa Mandliwala <span dir="ltr"><<a href="mailto:nafisa.mandliwala@gmail.com" target="_blank">nafisa.mandliwala@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Guys, you can find the xfs_alloc.h, xfs_alloc.c and xfs_iops.c in linux-x.x.x/fs/xfs/<div>Please check if it has the changes we're looking for.<br><br>I couldn't find anything on rmap, you should write a mail asap.</div></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div>On Thu, Nov 27, 2014 at 2:40 AM, Somdeep Dey <span dir="ltr"><<a href="mailto:somdeepdey10@gmail.com" target="_blank">somdeepdey10@gmail.com</a>></span> wrote:<br></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div dir="ltr">Hi,<div>We ran the code for fiemap on files, that included the following three types : </div><div><div>1) A non-fragmented file</div><div>2) A fragmented file before using xfs_fsr</div><div>3) The defragmeneted equivalent of the above file after using xfs_fsr</div></div><div><br></div><div><br></div><div class="gmail_extra">Thereafter we examined the data by printing the fiemap structure and fiemap_extents struct. The logs for the process followed is also attached here. <br></div><div class="gmail_extra"><br></div><div class="gmail_extra">Thanks,</div><div class="gmail_extra">A-DRS.</div></div></div></div><span>
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