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📁 一份很好的linux入门资料
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<HTML><HEAD>  <TITLE>BBS水木清华站∶精华区</TITLE></HEAD><BODY><CENTER><H1>BBS水木清华站∶精华区</H1></CENTER>发信人:&nbsp;cybergene&nbsp;(基因～也许以后～～),&nbsp;信区:&nbsp;Linux&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>标&nbsp;&nbsp;题:&nbsp;[Notes]用ReiserFS的人务必看看&nbsp;<BR>发信站:&nbsp;BBS&nbsp;水木清华站&nbsp;(Sun&nbsp;Nov&nbsp;12&nbsp;01:24:50&nbsp;2000)&nbsp;<BR>&nbsp;<BR>&nbsp;<BR>1、Can&nbsp;I&nbsp;use&nbsp;gcc&nbsp;2.95&nbsp;with&nbsp;reiserfs&nbsp;?&nbsp;&nbsp;<BR>&nbsp;<BR>We&nbsp;think&nbsp;no,&nbsp;but&nbsp;mainly&nbsp;because&nbsp;the&nbsp;rest&nbsp;of&nbsp;the&nbsp;kernel&nbsp;has&nbsp;troubles。&nbsp;<BR>&nbsp;<BR>2、Can&nbsp;I&nbsp;use&nbsp;32GB+&nbsp;IDE&nbsp;Hard&nbsp;Drives&nbsp;with&nbsp;reiserfs&nbsp;?&nbsp;&nbsp;<BR>&nbsp;<BR>Yes,&nbsp;but&nbsp;you&nbsp;need&nbsp;a&nbsp;patch&nbsp;to&nbsp;work&nbsp;it&nbsp;properly.&nbsp;&nbsp;<BR>Although,&nbsp;you&nbsp;have&nbsp;to&nbsp;turn&nbsp;DMA&nbsp;off.&nbsp;&nbsp;<BR><A HREF="http://www.win.tue.nl/math/dw/pp/aeb/linux/Large-Disk-12.html">http://www.win.tue.nl/math/dw/pp/aeb/linux/Large-Disk-12.html</A>&nbsp;<BR>&nbsp;<BR>3、Performance&nbsp;is&nbsp;poor,&nbsp;and&nbsp;my&nbsp;disk&nbsp;is&nbsp;96%&nbsp;full&nbsp;because&nbsp;I&nbsp;like&nbsp;to&nbsp;fully&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;utilize&nbsp;my&nbsp;company's&nbsp;resources.&nbsp;<BR>&nbsp;<BR>Once&nbsp;a&nbsp;disk&nbsp;drive&nbsp;gets&nbsp;more&nbsp;than&nbsp;85%&nbsp;full,&nbsp;the&nbsp;performance&nbsp;starts&nbsp;to&nbsp;&nbsp;<BR>suffer&nbsp;unless&nbsp;using&nbsp;a&nbsp;repacker&nbsp;(which&nbsp;isn't&nbsp;implemented&nbsp;yet.)&nbsp;You&nbsp;can&nbsp;&nbsp;<BR>get&nbsp;away&nbsp;with&nbsp;probably&nbsp;92%,&nbsp;but&nbsp;after&nbsp;that,&nbsp;you&nbsp;are&nbsp;making&nbsp;a&nbsp;mistake&nbsp;&nbsp;<BR>to&nbsp;keep&nbsp;it&nbsp;that&nbsp;full&nbsp;if&nbsp;performance&nbsp;is&nbsp;valued.&nbsp;This&nbsp;is&nbsp;true&nbsp;for&nbsp;almost&nbsp;&nbsp;<BR>all&nbsp;filesystems.&nbsp;Reiserfs&nbsp;does&nbsp;better&nbsp;than&nbsp;others&nbsp;because&nbsp;for&nbsp;the&nbsp;same&nbsp;&nbsp;<BR>amount&nbsp;of&nbsp;data&nbsp;we&nbsp;are&nbsp;a&nbsp;lower&nbsp;percentage&nbsp;of&nbsp;full&nbsp;due&nbsp;to&nbsp;our&nbsp;packing&nbsp;&nbsp;<BR>tails&nbsp;together.&nbsp;&nbsp;<BR>&nbsp;<BR>4、Qmail&nbsp;is&nbsp;*NOT*&nbsp;reliable&nbsp;with&nbsp;ReiserFS&nbsp;?&nbsp;<BR>&nbsp;<BR>Qmail&nbsp;integration&nbsp;instructions&nbsp;are&nbsp;here:&nbsp;<A HREF="http://www.jedi.claranet.fr/">http://www.jedi.claranet.fr/</A>&nbsp;<BR>qmail-reiserfs-howto.html.&nbsp;<BR>&nbsp;<BR>Qmail&nbsp;assumes&nbsp;that&nbsp;link()&nbsp;and&nbsp;unlink()&nbsp;are&nbsp;synchronous&nbsp;operations.&nbsp;&nbsp;<BR>Therefore,&nbsp;as&nbsp;soon&nbsp;as&nbsp;a&nbsp;message&nbsp;is&nbsp;received,&nbsp;Qmail&nbsp;writes&nbsp;it&nbsp;in&nbsp;mess&nbsp;and&nbsp;<BR>&nbsp;intd,&nbsp;creates&nbsp;a&nbsp;link&nbsp;in&nbsp;the&nbsp;todo&nbsp;directory&nbsp;for&nbsp;further&nbsp;processing&nbsp;and&nbsp;&nbsp;<BR>tells&nbsp;the&nbsp;SMTP&nbsp;client&nbsp;that&nbsp;everything&nbsp;is&nbsp;all&nbsp;right.&nbsp;<BR>With&nbsp;ReiserFS,&nbsp;link()&nbsp;is&nbsp;not&nbsp;synchronous,&nbsp;and&nbsp;there&nbsp;is&nbsp;no&nbsp;guarantee&nbsp;that&nbsp;<BR>&nbsp;the&nbsp;message&nbsp;will&nbsp;be&nbsp;flagged&nbsp;for&nbsp;further&nbsp;processing&nbsp;by&nbsp;qmail-send&nbsp;if&nbsp;&nbsp;<BR>there&nbsp;is&nbsp;a&nbsp;power&nbsp;outage&nbsp;before&nbsp;the&nbsp;link&nbsp;is&nbsp;commited.&nbsp;The&nbsp;same&nbsp;problem&nbsp;&nbsp;<BR>may&nbsp;affect&nbsp;local&nbsp;deliveries.&nbsp;<BR>&nbsp;<BR>5、If&nbsp;using&nbsp;md&nbsp;to&nbsp;spread&nbsp;reiserfs&nbsp;over&nbsp;multiple&nbsp;disks,&nbsp;turn&nbsp;&nbsp;<BR>REISERFS_READ_LOCK&nbsp;off&nbsp;(comment&nbsp;#define&nbsp;REISERFS_READ_LOCK&nbsp;out&nbsp;in&nbsp;&nbsp;<BR>linux/include/linux/reiserfs_fs.h.)&nbsp;&nbsp;<BR>&nbsp;<BR>&nbsp;<BR>--&nbsp;<BR>&nbsp;&nbsp;桃花坞里桃花庵，桃花庵下桃花仙；桃花仙人种桃树，又摘桃花卖酒钱。&nbsp;<BR>&nbsp;&nbsp;酒醒只在花前坐，酒醉换来花下眠；半醒半醉日复日，花落花开年复年。&nbsp;<BR>&nbsp;&nbsp;但愿老死花酒间，不愿鞠躬车马前；车尘马足富者趣，酒盏花枝贫者缘。&nbsp;<BR>&nbsp;&nbsp;若将富贵比贫贱，一在平地一在天；若将贫贱比车马，他得驱驰我得闲。&nbsp;<BR>&nbsp;&nbsp;别人笑我忒疯癫，我笑他人看不穿；不见五陵豪杰墓，无花无酒锄做田。&nbsp;<BR>&nbsp;<BR>&nbsp;<BR>※&nbsp;修改:·cybergene&nbsp;於&nbsp;Nov&nbsp;12&nbsp;01:29:51&nbsp;修改本文·[FROM:&nbsp;&nbsp;211.99.240.122]&nbsp;<BR>※&nbsp;来源:·BBS&nbsp;水木清华站&nbsp;smth.org·[FROM:&nbsp;211.99.240.122]&nbsp;<BR><CENTER><H1>BBS水木清华站∶精华区</H1></CENTER></BODY></HTML>
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