Keith Roberts wrote:> On Wed, 12 Jan 2011, compdoc wrote: > >> To: 'CentOS mailing list' <centos at centos.org> >> From: compdoc <compdoc at hotrodpc.com> >> Subject: Re: [CentOS] Kernel Errors Present >> >> Bad sectors get reallocated automatically, so you might >> not find any with testing. You need to see how many have >> been reallocated.<snip> Maybe, but I'd fsck -C -c /dev/.... ^^ - check for bad blocks, put them in the table mark
On Wed, 12 Jan 2011, m.roth at 5-cent.us wrote:> To: CentOS mailing list <centos at centos.org> > From: m.roth at 5-cent.us > Subject: Re: [CentOS] Kernel Errors Present... > > Keith Roberts wrote: >> On Wed, 12 Jan 2011, compdoc wrote: >> >>> To: 'CentOS mailing list' <centos at centos.org> >>> From: compdoc <compdoc at hotrodpc.com> >>> Subject: Re: [CentOS] Kernel Errors Present >>> >>> Bad sectors get reallocated automatically, so you might >>> not find any with testing. You need to see how many have >>> been reallocated. > <snip> > Maybe, but I'd fsck -C -c /dev/.... > ^^ - check for bad blocks, put them in the tableI could do that soon But I don't want to use DMA on this drive (/dev/hde) anyway. In the BIOS I turn DMA off for /dev/hda and /dev/hdc, but they still show up in /proc/ide/.../settings as using_dma 1. So is the kernel ignoring the BIOS DMA settings? 32-bit transfer mode is on in the BIOS though. Keith ----------------------------------------------------------------- Websites: http://www.karsites.net http://www.php-debuggers.net http://www.raised-from-the-dead.org.uk All email addresses are challenge-response protected with TMDA [http://tmda.net] -----------------------------------------------------------------
On Wed, 12 Jan 2011, John R Pierce wrote:> > To: centos at centos.org > From: John R Pierce <pierce at hogranch.com> > Subject: Re: [CentOS] Kernel Errors Present... > > >> In the BIOS I turn DMA off for /dev/hda and /dev/hdc, >> but they still show up in /proc/ide/.../settings as >> using_dma 1. > > > say HUH? IDE PIO modes are like 3-7 MBytes/sec and require100% CPU> utilization during the transfer phase. why in dogs namewould you be> doing this in 2011 ?...snip...> January 12, 2011 06:26PM > Use the modern, 80 wire cables, and trust the technology - > it's come a long way.Thanks for all the replies concerning this. I have bought an off-the-shelf 24" round ATA 133 IDE cable, and installed that in place of the 40-wire cable. The problem now appears to be fixed. Been keeping an eye on my logwatch emails, and they are no longer reporting this problem. Kind Regards, Keith Roberts ----------------------------------------------------------------- Websites: http://www.karsites.net http://www.php-debuggers.net http://www.raised-from-the-dead.org.uk All email addresses are challenge-response protected with TMDA [http://tmda.net] -----------------------------------------------------------------