From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rodd Zurcher Subject: Re: Silly question, defrag Date: Thu, 04 Apr 2002 16:18:27 -0600 Message-ID: <3CACD133.8020106@motorola.com> References: <200204030017.12595@X-Message-Flag:> <3CAABBA6.3030101@swelltech.com> <200204030740.05950@X-Message-Flag:> <20020403154906.A21821@ultraviolet.org> <20972156.20020404111651@tnonline.net> <20020404105440.F27377@ultraviolet.org> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit list-help: list-unsubscribe: list-post: List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: ReiserFS List Tracy R Reed wrote: >If there were real value in regularly defragging then Veritas, Sun, IBM, >HP, and all of those guys would have made defraggers for their respective >filesystems and it would be considered best practice and standard >operating procedure to use them. But I have never heard of any such tools >nor procedures. > HP-UX's vxfs (veritas i believe) ships with a defrag tool that packs extents and reorders data based on access usage (dir order I believe). HPUX documentation did recommend running it and tuning how often by ammount of fragmentation. I found on a heavily used ClearCase server a nightly run kept fragmentation down; although a weekly run was probably all that was necessary. Haven't run HPUX in several years so things may be different now. rbz -- Rodd Zurcher Principal Software Engineer SPS/WBSG/WSAS - 847.576.0666 rodd.zurcher@motorola.com