unreadable drives can be synchronized?

2007-05-16 Thread Colin McCabe
Hi all, I am running software RAID on Linux 2.6.21. While experimenting with adding and removing devices from the RAID array, I noticed something very troubling. I have a bad drive (let's call it drive B) which gets random read errors. I also have a good drive, call it drive A. B can synchroniz

Re: unreadable drives can be synchronized?

2007-05-16 Thread Colin McCabe
On 5/16/07, Bill Davidsen <[EMAIL PROTECTED]> wrote: Colin McCabe wrote: > Hi all, > > I am running software RAID on Linux 2.6.21. > > While experimenting with adding and removing devices from the RAID > array, I > noticed something very troubling. I have a bad dri

Re: unreadable drives can be synchronized?

2007-05-16 Thread Colin McCabe
On 5/16/07, Colin McCabe <[EMAIL PROTECTED]> wrote: What concerns me is that apparently these Hitachi disks have errors Sorry, I meant to write "Fujitsu," not "Hitachi." Doh! Colin - To unsubscribe from this list: send the line "unsubscribe linux-raid"

Re: unreadable drives can be synchronized?

2007-05-18 Thread Colin McCabe
Andrew Burgess wrote: Basically, B appears to be "write-only"; it will never return an error on a write, but just try to read from it, and you will be sorry. It would be interesting to see what SMART says about drive B, especially the short and long self tests. - To unsubscribe from this list:

Re: unreadable drives can be synchronized?

2007-05-18 Thread Colin McCabe
On 5/18/07, Tomasz Chmielewski <[EMAIL PROTECTED]> wrote: Andrew Burgess schrieb: >> Basically, B appears to be "write-only"; it will never return an error on a >> write, but just try to read from it, and you will be sorry. > > It would be interesting to see what SMART says about drive B, especia

Re: Fwd: Identify SATA Disks

2007-05-24 Thread Colin McCabe
lewis shobbrook wrote: Hi All, I'm wondering if anyone has discovered any nice tricks to assist in identification of hdd devices. I have an 8 bay hotswap array, pretty lights and have been wondering what others out there might be doing to determine which disk in an array is which. I've noted tha

Re: Fwd: Identify SATA Disks

2007-05-24 Thread Colin McCabe
lewis shobbrook wrote: Also I've not had much joy in attempting to "hotswap" SATA on a live system. Can anyone attest to successful hotswap (or blanket rule out as doesn't work) using std on board SATA controllers, cf dedicated raid card, or suggest further reading? I've spent considerable time