search for: graid3

Hi. Here you can find patches with changes to gmirror(8) and graid3(8): http://people.freebsd.org/~pjd/patches/gmirror.7.patch http://people.freebsd.org/~pjd/patches/graid3.patch The patches does the following: - Significant synchronization speed improvement. Now many parallel synchronization I/O requests can be used instead of only one before. Many people...

I have a FreeBSD 6.2-based server running a 1.2TB graid3 volume, which consists of 5x 320gb SATA hard drives. I've been getting errors in /var/log/messages from the graid3 volume, which I suspect means an underlying fault with one of the disks, but is there any way to decipher which one of these drives is throwing errors? I've checked smartc...

Hello list, Last night one disk of my desktop machine dead causing a hard lock of the computer. It was a component of a mirror volume so it wasn't as serious as it initially looked. Unfortunately, the metadata structure of my data partition (a geom raid3 array with tree components ) seems to be corrupted by this hard lock, the following message is scrolled constantly on the screen:

Hi, I'm using a recent RELENG_6 under I386/SMP (Athlon X2 4800+). dmesg output is under http://people.freebsd.org/~mr/dmesg.log.gz Root is on gmirror volume (2 SATA disks), a backup FS is on graid3 (5 firewire disks). This server acts as an bacula server. During backup with bacula I discovered an complete system freeze (no keyboard, nfs, disk...) after the following lines on the screen: ... ad0: TIMEOUT - WRITE_DMA retrying (1 retry left) LBA=108916879 ad1: TIMEOUT - WRITE_DMA retrying (1 re...

...nal 16-in-1 card reader connected via USB 2.0. The device is the Techsolo TCR-1640 (http://www.techsolo.de/product/cardreader/tcr_1640/index.php). I boot from a compact flash inserted in it and I can mount and unmount the same CF once the system has booted and has mounted the root partition from my graid3 array. The problem arise when I replace the inserted CF with another one (with different size and filesystem) and try to mount it. Fdisk can correctly sees the new partition table, but devfs is not updated and I cannot mount the new media. I tried to issue all sort of camcontrol commands (rescan th...

...work, because graphic files are big and should open fast. Not as fast as local ones, I understand that, but speeds about 12-15Mb/s is not enough for sure :) Only problem I see: which software RAID5 solution should I prefer? FreeBSD-based, of course! I see these variants: (1) FreeBSD 6(7?) + graid3. Slow, one disk for checksums is bottleneck, as far as I understand. (2) FreeBSD 6(7?) + gvinum/radi5. Is it stable enough?! Is it complete? when I try it about 6 months ago in VMWare installation with 5 virtual disks, I got panics and strange behaviour after "crashing"...

I gave the AMD64 version of 7.2 RC2 a spin and all installed as expected off the dvd INTEL S3200SHV MB, Core2Duo, 4G of RAM In the past it had been suggested that for zfs tuning, something like vm.kmem_size_max="1073741824" vm.kmem_size="1073741824" vfs.zfs.prefetch_disable=1 However doing a simple test with bonnie and dd, there does not seem to be very much difference in

>> #1. Map the physical drive slots to how they show up in FBSD so if a >> disk is removed and the machine is rebooted all the disks after that >> removed one do not have an 'off by one error'. i.e. if you have >> ada0-ada14 and remove ada8 then reboot - normally FBSD skips that >> missing ada8 drive and the next drive (that used to be ada9) is now