Re: please recommend a disk-exercising program?

2009-06-07 Thread Wojciech Puchar
It's not like the badblocks command is particularly speedy, either. I imagine that *any* thorough drive test would take a long while given today's typical drive size. ca 2 hours on 500GB disk with bs=1m ___ freebsd-questions@freebsd.org mailing list

Re: please recommend a disk-exercising program?

2009-06-07 Thread Geoff Fritz
On Sun, Jun 07, 2009 at 07:49:41PM +0200, Wojciech Puchar wrote: > > > > I've seen several mentions of "dd" in this thread, and I'll say that I've > > seen several recommendations elsewhere to use a simple: > > > > dd if=/dev/ of=/dev/ > > forgot bs=1m or at least 64kB, unless you like to wait

Re: please recommend a disk-exercising program?

2009-06-07 Thread Wojciech Puchar
I've seen several mentions of "dd" in this thread, and I'll say that I've seen several recommendations elsewhere to use a simple: dd if=/dev/ of=/dev/ forgot bs=1m or at least 64kB, unless you like to wait days with default bs=512 to "refresh" the drive. That is, dd will read the

Re: please recommend a disk-exercising program?

2009-06-07 Thread Geoff Fritz
On Sun, Jun 07, 2009 at 10:43:40AM +0100, John . wrote: > Hello list, > > Can anyone please recommend to me a program that will stress-test a > disk? If it matters, two are connected by firewire, another via usb. > Filesystem is ufs. I think I have a disk that might be about to fail, > but it only

Re: please recommend a disk-exercising program?

2009-06-07 Thread Wojciech Puchar
:D okok, dd it is. I'll remove all data beforehand just in case. Thank you all for your replies. -- you may "cure" badblocks by dd if=/dev/zero of=/dev/disk bs=1m (but cleaning all data) Disk will try to remap badblocks then. But remember that it only make it's life a bit longer. this disk

Re: please recommend a disk-exercising program?

2009-06-07 Thread John .
Hi everyone 2009/6/7 Wojciech Puchar : >> Check the downloads section at the disk manufacturer's website.  All the >> disk vendors have utilities that can test their disks. > > by doing the same as dd of=/dev/null :) > > as least seagate one. :D okok, dd it is. I'll remove all data beforehand ju

Re: please recommend a disk-exercising program?

2009-06-07 Thread Wojciech Puchar
Check the downloads section at the disk manufacturer's website. All the disk vendors have utilities that can test their disks. by doing the same as dd of=/dev/null :) as least seagate one. ___ freebsd-questions@freebsd.org mailing list http://lists.f

Re: please recommend a disk-exercising program?

2009-06-07 Thread Wojciech Puchar
That will show me thruput. I need to see if bad blocks or similar are happening. you will - dd will fail with error that case ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, se

Re: please recommend a disk-exercising program?

2009-06-07 Thread Wojciech Puchar
Hello list, Can anyone please recommend to me a program that will stress-test a disk? If it matters, two are connected by firewire, another via usb. Filesystem is ufs. I think I have a disk that might be about to fail, but it only sometimes errors when under stress. I need to see if it if it's

Re: please recommend a disk-exercising program?

2009-06-07 Thread Michael David Crawford
Check the downloads section at the disk manufacturer's website. All the disk vendors have utilities that can test their disks. Generally these utilities can use proprietary commands to exercise self-test functions that generally aren't accessible to non-proprietary test code. Most of the ut

Re: please recommend a disk-exercising program?

2009-06-07 Thread Jerry
On Sun, 7 Jun 2009 10:43:40 +0100 "John ." wrote: >Hello list, > >Can anyone please recommend to me a program that will stress-test a >disk? If it matters, two are connected by firewire, another via usb. >Filesystem is ufs. I think I have a disk that might be about to fail, >but it only sometimes

Re: please recommend a disk-exercising program?

2009-06-07 Thread Glen Barber
On Sun, Jun 7, 2009 at 6:05 AM, John . wrote: > Hi Glen, thanks for replying > >> You can use dd(1) to stress test disk I/O.  Something like this should work: >> >> dd if=/dev/${YOURDISK} of=/dev/null bs=1024k > > That will show me thruput. I need to see if bad blocks or similar are > happening. So

Re: please recommend a disk-exercising program?

2009-06-07 Thread John .
Hi Glen, thanks for replying > You can use dd(1) to stress test disk I/O.  Something like this should work: > > dd if=/dev/${YOURDISK} of=/dev/null bs=1024k That will show me thruput. I need to see if bad blocks or similar are happening. Something like scandisk for instance. Maybe I'm thinking t

Re: please recommend a disk-exercising program?

2009-06-07 Thread Glen Barber
Hi, John On Sun, Jun 7, 2009 at 5:43 AM, John . wrote: > Hello list, > > Can anyone please recommend to me a program that will stress-test a > disk? If it matters, two are connected by firewire, another via usb. > Filesystem is ufs. I think I have a disk that might be about to fail, > but it only

please recommend a disk-exercising program?

2009-06-07 Thread John .
Hello list, Can anyone please recommend to me a program that will stress-test a disk? If it matters, two are connected by firewire, another via usb. Filesystem is ufs. I think I have a disk that might be about to fail, but it only sometimes errors when under stress. I need to see if it was a fluke