6 messages, 4 authors, 2005-12-11 · open the first message on its own page
From: Neil Brown <hidden>
Date: 2005-12-10 12:10:33
On Saturday December 10, yang.geum.seok@gmail.com wrote:
Should I do format after make RAID-1(/dev/md0) device?
Yes. format (mkfs) must come AFTER make RAID1 (mdadm -C).
After I format disks(/dev/sda1, /dev/sdb1), do not you compose to RAID-1?
Don't format sda1 or sdb1. Compose the RAID-1 first, and then format md0. NeilBrown
From: Yanggun <hidden>
Date: 2005-12-11 13:04:25
Thank you very much. Can you inform it is what difference technologically? Yanggun 2005/12/10, Neil Brown [off-list ref]:
On Saturday December 10, yang.geum.seok@gmail.com wrote:quoted
Should I do format after make RAID-1(/dev/md0) device?Yes. format (mkfs) must come AFTER make RAID1 (mdadm -C).quoted
After I format disks(/dev/sda1, /dev/sdb1), do not you compose to RAID-1?Don't format sda1 or sdb1. Compose the RAID-1 first, and then format md0. NeilBrown
From: Patrik Jonsson <hidden>
Date: 2005-12-11 14:14:39
hello, Perhaps this can answer some questions: http://www.tldp.org/HOWTO/Software-RAID-HOWTO.html cheers, /Patrik Yanggun wrote:
Thank you very much. Can you inform it is what difference technologically? Yanggun 2005/12/10, Neil Brown [off-list ref]:quoted
On Saturday December 10, yang.geum.seok@gmail.com wrote:quoted
Should I do format after make RAID-1(/dev/md0) device?Yes. format (mkfs) must come AFTER make RAID1 (mdadm -C).quoted
After I format disks(/dev/sda1, /dev/sdb1), do not you compose to RAID-1?Don't format sda1 or sdb1. Compose the RAID-1 first, and then format md0. NeilBrown- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html !DSPAM:439c3231294002003030161!
From: Yanggun <hidden>
Date: 2005-12-11 14:29:23
I did not find involved part with this in the document. I am sorry, inform it is what section. 2005/12/11, Patrik Jonsson [off-list ref]:
hello, Perhaps this can answer some questions: http://www.tldp.org/HOWTO/Software-RAID-HOWTO.html cheers, /Patrik Yanggun wrote:quoted
Thank you very much. Can you inform it is what difference technologically? Yanggun 2005/12/10, Neil Brown [off-list ref]:quoted
On Saturday December 10, yang.geum.seok@gmail.com wrote:quoted
Should I do format after make RAID-1(/dev/md0) device?Yes. format (mkfs) must come AFTER make RAID1 (mdadm -C).quoted
After I format disks(/dev/sda1, /dev/sdb1), do not you compose to RAID-1?Don't format sda1 or sdb1. Compose the RAID-1 first, and then format md0. NeilBrown- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html !DSPAM:439c3231294002003030161!
From: Ross Vandegrift <hidden>
Date: 2005-12-11 17:13:50
On Sun, Dec 11, 2005 at 11:29:23PM +0900, Yanggun wrote:
I did not find involved part with this in the document. I am sorry, inform it is what section.
Basically, the md driver acts like another hard disk. So a regular setup looks like this: --------------------------------- | | | Applications (ls, cat) | | | --------------------------------- | v --------------------------------- | | | Filesystem (ext3) | | | --------------------------------- | v --------------------------------- | | | Block layer (sda1/sdb1) | | | --------------------------------- and a software RAID setup looks like this: --------------------------------- | | | Applications (ls, cat) | | | --------------------------------- | v --------------------------------- | | | Filesystem (ext3) | | | --------------------------------- | v --------------------------------- | | | Block layer (md0) | | | --------------------------------- | v --------------------------------- | | | Block Layer (sda1/sdb1) | | | --------------------------------- The format of sda1/sdb1 is the RAID data that the md driver writes to them. It form a complete layer of abstraction between your applications and the actual devices you are storing data on. -- Ross Vandegrift ross@lug.udel.edu "The good Christian should beware of mathematicians, and all those who make empty prophecies. The danger already exists that the mathematicians have made a covenant with the devil to darken the spirit and to confine man in the bonds of Hell." --St. Augustine, De Genesi ad Litteram, Book II, xviii, 37
From: Yanggun <hidden>
Date: 2005-12-11 23:28:03
thanks. I am really appreciative for explaining painting. Yanggun. 2005/12/12, Ross Vandegrift [off-list ref]:
On Sun, Dec 11, 2005 at 11:29:23PM +0900, Yanggun wrote:quoted
I did not find involved part with this in the document. I am sorry, inform it is what section.Basically, the md driver acts like another hard disk. So a regular setup looks like this: --------------------------------- | | | Applications (ls, cat) | | | --------------------------------- | v --------------------------------- | | | Filesystem (ext3) | | | --------------------------------- | v --------------------------------- | | | Block layer (sda1/sdb1) | | | --------------------------------- and a software RAID setup looks like this: --------------------------------- | | | Applications (ls, cat) | | | --------------------------------- | v --------------------------------- | | | Filesystem (ext3) | | | --------------------------------- | v --------------------------------- | | | Block layer (md0) | | | --------------------------------- | v --------------------------------- | | | Block Layer (sda1/sdb1) | | | --------------------------------- The format of sda1/sdb1 is the RAID data that the md driver writes to them. It form a complete layer of abstraction between your applications and the actual devices you are storing data on. -- Ross Vandegrift ross@lug.udel.edu "The good Christian should beware of mathematicians, and all those who make empty prophecies. The danger already exists that the mathematicians have made a covenant with the devil to darken the spirit and to confine man in the bonds of Hell." --St. Augustine, De Genesi ad Litteram, Book II, xviii, 37