Hi Brunner, > -----Original Message----- > From: owner-scientific-linux-us...@listserv.fnal.gov > [mailto:owner-scientific-linux-us...@listserv.fnal.gov] On Behalf Of > Bob Barton Sent: Thursday, February 19, 2009 3:16 PM To: scientific- > linux-us...@fnal.gov Subject: Re: AFS on XFS or ext3? > > I certainly don't want to start any flame wars about choosing between > ext3 of XFS. > One reason I was thinking of using XFS was because recently when I > set up an ext3 system, during the setup a note popped up that an > fsck would be forced on the file system after 180 days. Having to > take down a crucial resource for a long period to do an fsck on 2TB > of ext3 file system every 1/2 year is certainly unattractive! I know > there are ways to change this default using tune2fs but I am > uncertain what the implications of doing so are. My previous > experience with AFS file servers has been with AIX3.x - AIX4.x and > Solaris 9 and I essentially turned the systems on and left them > alone for years (literally - they went down whenever the building > power failed for some reason or other). I am hoping that XFS would have > similar characteristics. > > ====== > > >From my experience with ext3, the fsck takes place upon the first reboot > that takes place 6+months after that pop-up. It doesn't watch it's > wristwatch, say it's been 6 months, and do an fsck (THAT would be > annoying). So, it waits for a power-fail or shutdown, when disk service > is normally not expected.
If I'm going to boot a server and I don't want it to check the disks after the reboot, I make sure before I reboot to use tune2fs to make sure the disks won't check after n mounts etc. Get into the habit of doing that and no surprises on reboots :) Regards, Michael. > If an ext3 fs is mounted read-only (like my /usr partition) fsck > never runs on it at reboot, no matter what. > > My systems, also, are left running for years; and they're located in > charming get-aways like Kazakhstan: irate users are to be avoided at > all costs. ******************************************************************* > This email and any files transmitted with it are confidential and > intended solely for the use of the individual or entity to whom > they are addressed. If you have received this email in error please > notify the system manager. This footnote also confirms that this > email message has been swept for the presence of computer viruses. > www.Hubbell.com - Hubbell Incorporated** ------- End of Original Message -------