Re: raid10 or raid1+0 ?

2007-08-28 Thread Neil Brown
On Monday August 27, [EMAIL PROTECTED] wrote: I have a few people who asked me this as well, RAID10 or similiar (SW). I am not so sure, with RAID1 you can have your root disks on it and boot from it using LILO/GRUB and it is proven pretty stable; can the same be said about RAID10? For

Re: raid10 or raid1+0 ?

2007-08-28 Thread Bill Davidsen
Neil Brown wrote: On Monday August 27, [EMAIL PROTECTED] wrote: I have a few people who asked me this as well, RAID10 or similiar (SW). I am not so sure, with RAID1 you can have your root disks on it and boot from it using LILO/GRUB and it is proven pretty stable; can the same be said

Re: [patch v3 1/1] md: Software Raid autodetect dev list not array

2007-08-28 Thread Michael Evans
On 8/27/07, Randy Dunlap [EMAIL PROTECTED] wrote: Michael J. Evans wrote: On Monday 27 August 2007, Randy Dunlap wrote: On Mon, 27 Aug 2007 15:16:21 -0700 Michael J. Evans wrote: = --- linux/drivers/md/md.c.orig 2007-08-21

Re: raid10 or raid1+0 ?

2007-08-28 Thread Justin Piszcz
On Tue, 28 Aug 2007, T. Eichstädt wrote: Hello all, thanks for your responses. Quoting Bill Davidsen [EMAIL PROTECTED]: Neil Brown wrote: On Monday August 27, [EMAIL PROTECTED] wrote: I have a few people who asked me this as well, RAID10 or similiar (SW). I am not so sure, with RAID1

Re: [patch v3 1/1] md: Software Raid autodetect dev list not array

2007-08-28 Thread Jan Engelhardt
On Aug 28 2007 06:08, Michael Evans wrote: Oh, I see. I forgot about the changelogs. I'd send out version 5 now, but I'm not sure what kernel version to make the patch against. 2.6.23-rc4 is on kernel.org and I don't see any git snapshots. 2.6.23-rc4 is a snapshot in itself, a tagged one at

Re: raid10 or raid1+0 ?

2007-08-28 Thread T. Eichstädt
Hello all, thanks for your responses. Quoting Bill Davidsen [EMAIL PROTECTED]: Neil Brown wrote: On Monday August 27, [EMAIL PROTECTED] wrote: I have a few people who asked me this as well, RAID10 or similiar (SW). I am not so sure, with RAID1 you can have your root disks on it and

Re: [patch v5 1/1] md: Software Raid autodetect dev list not array

2007-08-28 Thread Michael J. Evans
From: Michael J. Evans [EMAIL PROTECTED] In current release kernels the md module (Software RAID) uses a static array (dev_t[128]) to store partition/device info temporarily for autostart. This patch replaces that static array with a list. Signed-off-by: Michael J. Evans [EMAIL PROTECTED] ---

Re: Linear RAID hot grow

2007-08-28 Thread Bill Davidsen
Dat Chu wrote: md: sdd1 has invalid sb, not importing! md: md_import_device returned -22 That is what I get for running dmesg | tail -20 I wouldn't expect the sb to matter, but you can zero it with mdadm if you are dead sure that partition isn't be used for/by anything. I suspect that

Re: [patch v3 1/1] md: Software Raid autodetect dev list not array

2007-08-28 Thread Michael Evans
On 8/28/07, Bill Davidsen [EMAIL PROTECTED] wrote: Michael Evans wrote: Oh, I see. I forgot about the changelogs. I'd send out version 5 now, but I'm not sure what kernel version to make the patch against. 2.6.23-rc4 is on kernel.org and I don't see any git snapshots. Additionally I

Re: [patch v3 1/1] md: Software Raid autodetect dev list not array

2007-08-28 Thread Michael J. Evans
On Tuesday 28 August 2007, Jan Engelhardt wrote: On Aug 28 2007 06:08, Michael Evans wrote: Oh, I see. I forgot about the changelogs. I'd send out version 5 now, but I'm not sure what kernel version to make the patch against. 2.6.23-rc4 is on kernel.org and I don't see any git snapshots.

Re: [patch v3 1/1] md: Software Raid autodetect dev list not array

2007-08-28 Thread Bill Davidsen
Michael Evans wrote: Oh, I see. I forgot about the changelogs. I'd send out version 5 now, but I'm not sure what kernel version to make the patch against. 2.6.23-rc4 is on kernel.org and I don't see any git snapshots. Additionally I never could tell what git tree was the 'mainline' as it isn't

Re: [patch v3 1/1] md: Software Raid autodetect dev list not array

2007-08-28 Thread Randy Dunlap
Michael Evans wrote: On 8/28/07, Bill Davidsen [EMAIL PROTECTED] wrote: Michael Evans wrote: Oh, I see. I forgot about the changelogs. I'd send out version 5 now, but I'm not sure what kernel version to make the patch against. 2.6.23-rc4 is on kernel.org and I don't see any git snapshots.

Re: [patch v3 1/1] md: Software Raid autodetect dev list not array

2007-08-28 Thread Michael Evans
On 8/28/07, Randy Dunlap [EMAIL PROTECTED] wrote: Michael Evans wrote: On 8/28/07, Bill Davidsen [EMAIL PROTECTED] wrote: Michael Evans wrote: Oh, I see. I forgot about the changelogs. I'd send out version 5 now, but I'm not sure what kernel version to make the patch against.

Re: [patch v3 1/1] md: Software Raid autodetect dev list not array

2007-08-28 Thread Randy Dunlap
Michael Evans wrote: On 8/28/07, Randy Dunlap [EMAIL PROTECTED] wrote: Michael Evans wrote: On 8/28/07, Bill Davidsen [EMAIL PROTECTED] wrote: Michael Evans wrote: Oh, I see. I forgot about the changelogs. I'd send out version 5 now, but I'm not sure what kernel version to make the patch

Re: [patch v3 1/1] md: Software Raid autodetect dev list not array

2007-08-28 Thread Michael Evans
On 8/28/07, Randy Dunlap [EMAIL PROTECTED] wrote: Michael Evans wrote: On 8/28/07, Randy Dunlap [EMAIL PROTECTED] wrote: Michael Evans wrote: On 8/28/07, Bill Davidsen [EMAIL PROTECTED] wrote: Michael Evans wrote: Oh, I see. I forgot about the changelogs. I'd send out version 5 now,

Re: [patch v3 1/1] md: Software Raid autodetect dev list not array

2007-08-28 Thread Randy Dunlap
Michael Evans wrote: On 8/28/07, Randy Dunlap [EMAIL PROTECTED] wrote: Michael Evans wrote: On 8/28/07, Randy Dunlap [EMAIL PROTECTED] wrote: Michael Evans wrote: On 8/28/07, Bill Davidsen [EMAIL PROTECTED] wrote: Michael Evans wrote: Oh, I see. I forgot about the changelogs. I'd send

[PATCH] drivers/md/raid1: add BUG_ON in raid1_end_write_request on invalid mirror index

2007-08-28 Thread Chris Eineke
Hello folks, We saw a particularly hard to reproduce bug in raid1_end_write_request that we think the attached patch would catch. Now I'm wondering if anybody has seen anything similar to this before us and is interested in getting a discussion going. Best regards -- Chris Eineke [EMAIL

Re: SWAP file on a RAID-10 array possible?

2007-08-28 Thread Bill Davidsen
Tomas France wrote: This wouldn't be probably the best solution in my situation. The computer we are talking about will be quad-core web server with 8GB RAM and initially 2x500GB SATA HDDs setup in a RAID-1 array. When it begins running low on space or more HDDs performance is needed, I plan to

Re: Raid-10 mount at startup always has problem

2007-08-28 Thread Bill Davidsen
Daniel L. Miller wrote: Hi! I have a four-disk Raid-10 array that I created and mount with mdadm. It seems like every re-boot, either the array is not recognized altogether, or one of the disks is not added. Manually adding using mdadm works. What superblock version and partition type

Re: raid10 or raid1+0 ?

2007-08-28 Thread Bill Davidsen
Justin Piszcz wrote: On Tue, 28 Aug 2007, T. Eichstädt wrote: Hello all, thanks for your responses. Quoting Bill Davidsen [EMAIL PROTECTED]: Neil Brown wrote: On Monday August 27, [EMAIL PROTECTED] wrote: I have a few people who asked me this as well, RAID10 or similiar (SW). I am