RAID1 robust read and read/write correct patch

I'd like to try this patch http://marc.theaimsgroup.com/?l=linux-raidm=110704868115609w=2 with EVMS BBR. Has anyone tried it on 2.6.10 (with FC2 1.9 and EVMS patches)? Has anyone tried the rewrite part at all? I don't know md or the kernel or this patch, but the following lines of the patch

Re: RAID1 robust read and read/write correct patch

J. David Beutel [EMAIL PROTECTED] wrote: I'd like to try this patch http://marc.theaimsgroup.com/?l=linux-raidm=110704868115609w=2 with EVMS BBR. Has anyone tried it on 2.6.10 (with FC2 1.9 and EVMS patches)? Has anyone tried the rewrite part at all? I don't know md or the kernel or

[PATCH] Errenous sizeof use in raid1

This isn't a real bug as the smallest slab-size is 32 bytes but please apply for consistency. Found by the Coverity tool. Signed-off-by: Alexander Nyberg [EMAIL PROTECTED] = drivers/md/raid1.c 1.105 vs edited = --- 1.105/drivers/md/raid1.c2005-01-08 06:44:10 +01:00 +++

Re: Raid5 with 2 bad drives

Mike Hardy [EMAIL PROTECTED] writes: I posted a raid5 parity calculator implemented in perl a while back (a couple weeks?) that is capable of taking your disk geometry, the RAID LBA you're interested in, and finding the disk sector it belongs to. I honestly don't remember if it can go the

Re: *terrible* direct-write performance with raid5

dean gaudet wrote: On Tue, 22 Feb 2005, Michael Tokarev wrote: When debugging some other problem, I noticied that direct-io (O_DIRECT) write speed on a software raid5 is terrible slow. Here's a small table just to show the idea (not numbers by itself as they vary from system to system but how

Re: *terrible* direct-write performance with raid5

Michael Tokarev [EMAIL PROTECTED] wrote: (note raid5 performs faster than a single drive, it's expectable as it is possible to write to several drives in parallel). Each raid5 write must include at least ONE write to a target. I think you're saying that the writes go to different targets from

Re: [OT] best tape backup system?

Guy wrote: I know a thing or 2 about SCSI. I know I had it correct. 1 config was all wide LVD (2940U2W). My card has a LVD and a SE port on the same logical SCSI bus. I was surprized once when I noticied such logical SCSI bus really isn't logical per se. I mean, if I plug ANY device into the

RE: [OT] best tape backup system?

We must be in 2 different worlds!!! I can have wide LVD and narrow SE on the same card (2940U2W). And wide ultra and narrow SE on the same card (2940UW). That is why the card is so good. IMO. Just not with linux. The OS that must not be named, supports the above. :( In fact, I have a PC

RAID1 robust read and read/write correct and EVMS-BBR

Hi, I noticed the discussion about robust read on the RAID list and similar one on the EVMS list so I am sending this mail to both the lists. Latent media faults which prevent data from being read from portions of a disk has always been a concern for us. Such faults will go undetected till the

Re: RAID1 robust read and read/write correct and EVMS-BBR

Nagpure, Dinesh wrote, on 2005-Feb-23 9:55 AM: I can go back and put together a patch over the weekend if anyone is interested in using it. Yes, please, I'm very interested in using it. Cheers, 11011011 - To unsubscribe from this list: send the line unsubscribe linux-raid in the body of a

Re: RAID1 robust read and read/write correct patch

Peter T. Breuer wrote, on 2005-Feb-23 1:50 AM: Quite possibly - I never tested the rewrite part of the patch, just wrote it to indicate how it should go and stuck it in to encourage others to go on from there. It's disabled by default. You almost certainly don't want to enable it unless you are

RE: RAID1 robust read and read/write correct and EVMS-BBR

This is very good! But most of my disk space is RAID5. Any chance you have similar plans for RAID5? Thanks, Guy -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Nagpure, Dinesh Sent: Wednesday, February 23, 2005 2:56 PM To: '[EMAIL PROTECTED]' Cc:

Re: RAID1 robust read and read/write correct patch

J. David Beutel [EMAIL PROTECTED] wrote: Peter T. Breuer wrote, on 2005-Feb-23 1:50 AM: Quite possibly - I never tested the rewrite part of the patch, just wrote it to indicate how it should go and stuck it in to encourage others to go on from there. It's disabled by default. You almost

Posible bug on RAID 1 driver

Hi, The Linux RAID crushes when recuntructing a disk. We have a RAID 1 disk over two active SATA disks and one spare SATA disk. I was probing the RAID and I finded that the RAID ocasionally crashes. I adjunt to this email the secuences of commands I wrote. When I swap one disk on the

Re: RAID1 robust read and read/write correct and EVMS-BBR

I can go back and put together a patch over the weekend if anyone is interested in using it. -dinesh [EMAIL PROTECTED] - Oh yes, please make this patch. We are very very interested in it! We are waiting for the one day where the same block on all mirrors has read problems. Ok, we're now