Re: which SATA-raid controller...
On Sun, 2004-08-15 at 18:08, IOhannes m zmoelnig wrote: > hello. > > we are planning to set up a serial-ATA based fileserver (>1 Terabyte). > the host will be dedicated solely to serving files (via samba and nfs > (and probably appletalk), so i was thinking about a software-raid solution. > > are there any cards you would recommend ? > i was thinking about highpoint rocketraid-1820a (i think there are only > proprietary drivers available, but it has 8 SATA-channels) or promise > fasttrack s150-sx4 (only 4 SATA-channels) > anything else ? (3ware and adaptec cards are most likely better (? in > terms of what ?) but i guess they have their prize for getting true > hardware-raid which i don't really need). > > > mfg.a.dr > IOhannes hi, we're using a backup server equipped with a 3ware controller. the motherboard is a simple desktop board, so we're using a normal pci interface. we've never had a problem, and even though using standard pci, the speeds are fairly good (surely not top of the bill though). the configuration is 3-disk raid5. fyi, here's the hdparm test: /dev/sda: Timing buffer-cache reads: 128 MB in 0.21 seconds =609.52 MB/sec Timing buffered disk reads: 64 MB in 1.43 seconds = 44.76 MB/sec i've tested disk failures by just pulling out a disk and rebuilds went fine. sure, 3ware's expensive and probably not the fastest out there, but i'm very happy with it's stablity and ease of installation and configuration. regards, -rodi. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: which SATA-raid controller...
On Mon, 16 Aug 2004 17:39, "R.M. Evers" <[EMAIL PROTECTED]> wrote: > pci, the speeds are fairly good (surely not top of the bill though). the > configuration is 3-disk raid5. fyi, here's the hdparm test: > > /dev/sda: > Timing buffered disk reads: 64 MB in 1.43 seconds = 44.76 MB/sec That read speed is quite poor. I would expect to see better speeds than that from a single S-ATA disk! For several years people have been reporting better speeds than that from 3ware controllers (although almost no-one tested with as few as three disks). But hdparm is a poor benchmark tool. I suggest using Bonnie++. -- http://www.coker.com.au/selinux/ My NSA Security Enhanced Linux packages http://www.coker.com.au/bonnie++/ Bonnie++ hard drive benchmark http://www.coker.com.au/postal/Postal SMTP/POP benchmark http://www.coker.com.au/~russell/ My home page -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: which SATA-raid controller...
On Mon, 2004-08-16 at 10:19, Russell Coker wrote: > That read speed is quite poor. I would expect to see better speeds than that > from a single S-ATA disk! For several years people have been reporting > better speeds than that from 3ware controllers (although almost no-one tested > with as few as three disks). i know, it's the mobo.. but speed isn't really what i need on that particular server. it needed to be fairly affordable, but reliable and stable. and that's exactly what it is :-) -r. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: which SATA-raid controller...
--Monday, August 16, 2004 09:39:48 +0200 "R.M. Evers" <[EMAIL PROTECTED]>: > On Sun, 2004-08-15 at 18:08, IOhannes m zmoelnig wrote: >> we are planning to set up a serial-ATA based fileserver (>1 >> Terabyte). the host will be dedicated solely to serving files (via [...] > we're using a backup server equipped with a 3ware controller. the > motherboard is a simple desktop board, so we're using a normal pci > interface. we've never had a problem, and even though using standard > pci, the speeds are fairly good (surely not top of the bill > though). the configuration is 3-disk raid5. A while ago we startet changing from GDT SCSI-RAID to 3ware SCSI/IDE. We have models from 2 to 12 channel in use, both ATA and SATA and are quite happy with them. Never caused any troubles so far. Some of the larger servers use the 12 channel model. None of them did support a >2TB RAID-sets so we had to setup two single disk-sets. But 3ware should have fixed that by now. RAID5 Performance is acceptable but not superior. RAID0/1/10 is fine. I haven't checked the new caching models since caching without battery backup and ECC doesn't look too reliable to me. Still performance might be tempting. Cheers, Marcel -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
don't forget to bring this along on your next date
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LOAD DATA LOCAL INFILE
Hello We have updated our server to PHP 4.3.8 and MySQL 4.0.2. Some of our clients run a shop software that need 'LOAD DATA LOCAL INFILE' to store its data to MySQL. MySQL itself supports the command. I can run it from mysql-client. That works. I have read about the fix on php.net (http://www.php.net/ChangeLog-4.php / http://bugs.php.net/28632). Until now, i couldn't find a solution to get it work. Is there way to get it work? Regards Dani -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
UML troubles
Hi! Maybe someone has tried UML kernel on grsec machine? I took that Debian precompiled UML kernel, run it with "linux root=/servers/moon " (that /servers/moon is one of my production servers' ext2 partition image), but UML says: ... mconsole (version 2) initialized on /root/.uml/N7Jm6p/mconsole unable to open root_fs for validation Initializing stdio console driver NET4: Linux TCP/IP 1.0 for NET4.0 And that's all... no further messages, nothing. The modules required for this kernel has been put inside the image. The host kernel is with grsec patches,. and it tells in /var/log something about resource overstep: Aug 16 17:13:51 localhost kernel: grsec: attempted resource overstep by requesting 494927872 for RLIMIT_STACK against limit 8388608 by /usr/bin/linux[linux:29530] uid/euid:0/0 gid/egid:0/0, parent /usr/bin/linux[linux:2566] uid/euid:0/0 gid/egid:0/0 Any ideas? Thanks, Dmitry For your reference, the complete output running UML: virtual:~# linux root=/servers/moon Checking for the skas3 patch in the host...not found Checking for /proc/mm...not found tracing thread pid = 8253 Checking for /dev/anon on the host...Not available (open failed with errno 2) Checking for /dev/anon on the host...Not available (open failed with errno 2) Checking for /dev/anon on the host...Not available (open failed with errno 2) Checking for /dev/anon on the host...Not available (open failed with errno 2) Linux version 2.4.26-2um ([EMAIL PROTECTED]) (gcc version 3.3.4 (Debian 1:3.3.4-3)) #2 Fri Jul 16 17:51:17 PDT 2004 On node 0 totalpages: 8192 zone(0): 8192 pages. zone(1): 0 pages. zone(2): 0 pages. Kernel command line: root=/servers/moon Calibrating delay loop... 989.59 BogoMIPS Memory: 28148k available Dentry cache hash table entries: 4096 (order: 3, 32768 bytes) Inode cache hash table entries: 2048 (order: 2, 16384 bytes) Mount cache hash table entries: 512 (order: 0, 4096 bytes) Buffer cache hash table entries: 1024 (order: 0, 4096 bytes) Page-cache hash table entries: 8192 (order: 3, 32768 bytes) Checking for host processor cmov support...Yes Checking for host processor xmm support...No Checking that ptrace can change system call numbers...OK Checking that host ptys support output SIGIO...Yes Checking that host ptys support SIGIO on close...No, enabling workaround POSIX conformance testing by UNIFIX Linux NET4.0 for Linux 2.4 Based upon Swansea University Computer Society NET3.039 Initializing RT netlink socket Starting kswapd VFS: Disk quotas vdquot_6.5.1 Journalled Block Device driver loaded devfs: v1.12c (20020818) Richard Gooch ([EMAIL PROTECTED]) devfs: boot_options: 0x0 SGI XFS with ACLs, no debug enabled SGI XFS Quota Management subsystem Disabling 2.6 AIO in tt mode pty: 256 Unix98 ptys configured RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize loop: loaded (max 8 devices) Initializing Cryptographic API Initializing software serial port version 1 mconsole (version 2) initialized on /root/.uml/N7Jm6p/mconsole unable to open root_fs for validation Initializing stdio console driver NET4: Linux TCP/IP 1.0 for NET4.0 -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
