fast raid0, slow raid1 (read) with same disks

1999-12-17 Thread Steffen Ullrich
Hi, I'm using 2.2.14pre12 with the unified IDE driver (to get UDMA on PIIX) and with raidtools and raid from 19990824 (the newest I've found). Mainboard is an older LX based from Gigabyte with on board SCSI, Processor PII233, RAM 64MByte. Primary harddisk an SCSI IBM, then I added two new Maxtor

Re: FW: Ugh . . .

1999-12-17 Thread Jakob Østergaard
On Fri, Dec 17, 1999 at 04:32:14PM -0700, Eric Jorgensen wrote: > My last mail to you bounced, so I'm trying again. Sorry if anyone gets this twice... On Fri, Dec 17, 1999 at 03:41:37PM -0700, Eric Jorgensen wrote: > Well, I tried, something seems to be wrong. I had to update raidtools to > in

FW: Ugh . . .

1999-12-17 Thread Eric Jorgensen
-Original Message- From: Eric Jorgensen [mailto:[EMAIL PROTECTED]] Sent: Friday, December 17, 1999 3:42 PM To: Jakob Østergaard Subject: RE: Ugh . . . Well, I tried, something seems to be wrong. I had to update raidtools to include the failed-disk directive. that took a while to figure

Re: raid-1 mirror...

1999-12-17 Thread Andy Poling
On Fri, 17 Dec 1999, Jakob Østergaard wrote: > It's no problem (any longer) making > both root and swap reside on RAID. Swapping on a software RAID'd partition will _break_ if the array ever needs to resync. It's something revealed fairly recently, and has something to do with using the buffer c

RE: raid-1 mirror...

1999-12-17 Thread Bruno Prior
> It's no problem (any longer) making > both root and swap reside on RAID. True of root, but see Stephen Tweedie's message of 6 December for a warning about swap on RAID. You can get corruption if swapping during RAID resyncing. It's still probably better than not having swap on RAID, as it shoul

Re: raid-1 mirror...

1999-12-17 Thread Jakob Østergaard
On Fri, Dec 17, 1999 at 10:23:54AM -0800, Jeff Behl wrote: > If anyone wants to point me to the mailing list > archive or faq, that'd be great cuz I'm sure this has > been asked before. But I'll ask anyways.. > > Have two drives in which all partitions are mirrored > except for / partition. My

raid-1 mirror...

1999-12-17 Thread Jeff Behl
If anyone wants to point me to the mailing list archive or faq, that'd be great cuz I'm sure this has been asked before. But I'll ask anyways.. Have two drives in which all partitions are mirrored except for / partition. My game plan is: If a drive dies, I want to a) have the machine keep on

Re: Ugh . . .

1999-12-17 Thread Jakob Østergaard
On Fri, Dec 17, 1999 at 10:37:30AM -0700, Eric Jorgensen wrote: > > OK, here's the lowdown. > > I have, well, had, 4 drives in a raid 5 array. drive 4 went south, drive 3 > is desynced. What ? How ? You lost two drives in your RAID-5 ? > I've replaced drive 4 with a fresh d

Ugh . . .

1999-12-17 Thread Eric Jorgensen
OK, here's the lowdown. I have, well, had, 4 drives in a raid 5 array. drive 4 went south, drive 3 is desynced. I've replaced drive 4 with a fresh drive. (Seagate Medalist drives are the bane of my existance). So, at this point, I've seen the messages regarding

Re: RAID controllers under Linux...

1999-12-17 Thread Marc SCHAEFER
Klaus Schroer <[EMAIL PROTECTED]> wrote: > With a four disk setup you get a significant performance increase for > writing but not very much for reading (again software raid with one > AHA2940U2W LVD): However, we see that each of the disks is at 10 MByte/s (still to be verified), thus 4 disk is

RE: HELP-- identical disks but fdisk sees them different

1999-12-17 Thread Bruno Prior
Sorry this is such a late reply to the thread Can't you also force disk geometry settings with boot-prompt parameters? i.e. add "hdx=cyl,head,sect" to your append line(s) in /etc/lilo.conf, where cyl = the number of cylinders according to the BIOS, head = number of heads and sect = number of sect