search for: bbwc

Hello, On my home server (Debian etch, custom 2.6.28.2 kernel), I am using ext3 for both root and /home filesystems, with barriers enabled to prevent corruption caused by my PATA disk write cache. Looking for a better performance, I have also set the commit=nr option as described in linux-2.6.28.2/Documentation/filesystems/ext3.txt, so that I now have: niko at petole:~$ mount -t ext3

Hi all, I discovered lately that two of my XEN servers suffer from a really bad disk throughput - in domU as well as in dom0. All of them run Debian/Etch, Kernel 2.6.18-6-xen (orig. Debian) with XEN 3.2 (backported). The software versions seem to be ok for most machines: Lenovo A57 with S-ATA and (E8200, VT enabled): up to 90MB/s Shuttle, FB61 based, ATA-Disk (Celeron, no VT): up to

...medies.com> wrote: > "Drives, and hardware RAID cards are subject to firmware bugs, just as > we have software bugs in the kernel." makes no assessment of how > common such bugs are relative to each other. I don't want to underestimate the value of good hardware RAID with BBWC implementations when it comes to avoiding problems that aren't bugs, but are "just the way things are." For example unclean shutdowns, and especially unclean shutdowns along with a device failure. There's a metric ton of really useful information in the man 4 md page that most pe...

I have just had delivered a new HP Proliant server and it is based on an Intel Xeon 2.8GHz processor. On site already we have an Acer Altos G310 with a P4 2.8GHz processor. The new HP server was destined for another site with about 30 persons to service some simple file and print sharing and to manage their email (postfix + MailScanner). The Acer is hosting our Intranet, file and print sharing

...n ?????: Thank you for reply, BTW, other webserver has almost the same bonnie results (10283ms and 5884ms) on ext3 partition with 45GB of data (1.5 millions of files)?! Hardware and RAID5(also hardware) are the same: HP Proliant DL380 G4 with SmartArray 6i controller (as I see it comes with 128MB BBWC enabler but not kit). I did not tried to mount fs with barriers disabled. Does it have any crititcal risks? Bonnie tests was performed in the morning when we have a mininmal user load. With regards, Andrey. > Hello, > > On 09/23/2011 08:51 AM, Andrey wrote: >> Hello, >> &gt...

Hi All, first time post so please excuse any blunders We are specifying two servers using supermicro X7DBE+ MB and want to add on a SAS controller for Raid 10. We want to use the CentOS 4.4 X86_64 distro. We are currently considering an Intel CC SRCSAS144E SAS Raid Controller for the servers using 4 Fujitsu 147 GB SAS HDD, and a Adaptec SASC RAID 4805 8-port for the server using 6 Fujitsu

Hi All, This is probably a bit off-topic but does anyone have any idea about sizing MTA servers.?? We have about 200,000 emails/hr? incoming and outgoing.? I am intending using Exim and Spamassassin on each MTA.? How many servers using recent hardware would I need to cope with this mail throughput?? What is more important on the servers, CPU or RAM?? Should I have mail going both directions on

HI, This is more general linux related topic , i want to know few basic things. 1) How file systeem get corrupted on linux? 2) why,when and how fsck to be run without lossing data? 3) Is there is any other tool other than fsck available for file system check . 4) what are all the precaution to be made to prevent file system corruption. 5) why & when the system will get hanged

Hello, I try to create some kind of mail backup system. What I need is system that will store mail for the whole domain, and allow me to restore messages from/to specified email at that domain. The scheme is pretty simple: on our main mail server the SMTP server itself has a rule to send a copy of every message to 'backup at backupserver.host', and the backupserver.host domain is