<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi,<div><br class="webkit-block-placeholder"></div><div>Lustre stripes in round robin manner. So let say that you have stripe count set to 2 and stripe size set to 1MB. When you start write 3GB file from a client to lustre it will send 1MB piece to OST1 and then 1MB piece to OST2 and it will keep doing that until it send 3GB or until there is no free space left on OST's. From you description it looks like you are not striping at all. use command `lfs getstripe <path_to_file>` to get striping information. In order to stripe across both OST in your case create new dir and then use command `lfs setstripe -c 2 <path_to _new_dir>. If you now create a file under this new directory it will be striped accross both OST's</div><div><br class="webkit-block-placeholder"></div><div>Cheers,</div><div><br class="webkit-block-placeholder"></div><div>Wojciech <br><div><div>On 21 Feb 2008, at 10:21, Mailer PH wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div dir="ltr" bgcolor="#ffffff"><div><font face="Arial" size="2">Hello ,</font></div><div><font face="Arial" size="2">Just a questune , does single file stipes across few OTS's ?</font></div><div><font face="Arial" size="2">I just run into strange behviour of lustre , i tested the way lustre stipes the data on 2 OST's</font></div><div><font face="Arial" size="2">There are 2 OTS's</font></div><div><font face="Arial" size="2">1 is 5 gig with 50% left</font></div><div><font face="Arial" size="2">2 is 3 gig with 90% left on it</font></div><div><font face="Arial" size="2">Im moving 3 gig file to lustre(from a client)</font></div><div><font face="Arial" size="2">it start wrting the file to OST 0 as it say on lfs getstripe filename.iso</font></div><div><font face="Arial" size="2">while the file is moving im watching the OST 0 with df -h</font></div><div><font face="Arial" size="2">OST 0 is starting to fill up and when getting to 100% the file transfer is stopping with an error</font></div><div><font face="Arial" size="2">I had the imression that it will continue wrting the file to OST 1 when OST 0 run out of space</font></div><div><font face="Arial" size="2"></font> </div><div><font face="Arial" size="2">Is this behaviour is ok ?</font></div><div><font face="Arial" size="2"></font> </div><div><font face="Arial" size="2">Thanks ,</font></div><div><font face="Arial" size="2"></font> </div><div><font face="Arial" size="2"></font> </div><div><font face="Arial" size="2"></font> </div><div><font face="Arial" size="2">----------------------------------------------------------<br>Outgoing messages are virus free checked by NOD32 system<span class="Apple-converted-space"> </span><br><br></font></div>_______________________________________________<br>Lustre-discuss mailing list<br><a href="mailto:Lustre-discuss@lists.lustre.org">Lustre-discuss@lists.lustre.org</a><br><a href="http://lists.lustre.org/mailman/listinfo/lustre-discuss">http://lists.lustre.org/mailman/listinfo/lustre-discuss</a><br></div></span></blockquote></div><br></div></body></html>