Hi
I want to move my /home dir into a software raid 1.
Currently 65 gig /dev/hda
partitioned:
Filesystem Size Used Avail Use% Mounted on
/dev/hda2 54G 19G 33G 38% /
/dev/hda1
46M 15M 29M 33% /boot
This is my plan:
1) Add /dev/hdb
2) Create a raid1
partition /tmp_home
Hi
I want to move my /home dir into a software raid 1.
Currently 65 gig /dev/hda
partitioned:
Filesystem Size Used Avail Use% Mounted on
/dev/hda2 54G 19G 33G 38% /
/dev/hda1 46M 15M 29M 33% /boot
This is my plan:
1) Add /dev/hdb
2) Create a raid1
partition /tmp_home
Stephen == Stephen Liu [EMAIL PROTECTED] writes:
Stephen I have some further RAID questions to ask :
I suggest doing a google search on RAID, and doing some reading to learn
more about RAID...
Ed
--
Ed BaileyRed Hat, Inc.
Hi Ed Baily,
Thanks for your advice.
At 03:58 PM 12/25/2001 -0500, you wrote:
Stephen I have some further RAID questions to ask :
I suggest doing a google search on RAID, and doing some reading to learn
more about RAID...
Yes, you are correct. I already made intensive browsing on Internet in
Hi All People,
Merry X'mas
I have some further RAID questions to ask :
1) Can ATA-133 hard drive be used on RAID controller available on market
such RAID 0, 1, 0+1 etc. with cable for ATA100/ATA133. No special designed
controller is needed ?
2) RAID 0
If I have 6 discs and the controller
christoph == christoph pirchl [EMAIL PROTECTED] writes:
...
christoph You forgot RAID 4 it is stripping with parity on one Disc ! It s
christoph normally not used any longer as i know !
Actually, a few years back I sat in on a presentation put on by Network
Appliance. It seems that they (at
Sorry do correct you Ed, but
RAID 5 is not striping + mirroring, it is stripping with distributed
parity,
It is the best compromise when you need fault tolerance, it`s cheaper
then
RAID 1 (mirroring) and the fault tolerance is also ok !
You forgot RAID 4 it is stripping with parity on one Disc
On Tue, 2001-12-18 at 07:50, [EMAIL PROTECTED] wrote:
Sorry do correct you Ed, but
RAID 5 is not striping + mirroring, it is stripping with distributed
parity,
If I said RAID 5 is striping + mirroring, then you're right - I was
wrong.
It is the best compromise when you need fault
Hi James,
Thanks for your information.
Where can I have that chapter downloaded ? Is its ebook available ?
B.R.
Stephen
At 03:33 AM 12/19/2001 -0700, you wrote:
Hi, the Berkley Raid definitions define RAID 5 as striping with interleved
parity. because of the number of increased writes and
On Tue, 2001-12-18 at 23:04, Stephen Liu wrote:
At 06:40 AM 12/18/2001 -0600, you wrote:
RAID 5 is striping + mirroring. I recommend that this not be done on
IDE drives unless you've invested in extra controllers. You need at
least 3 drives to make a RAID 5 set.
Whether a special
Hi Stephen,
Is RAID 0+1 similar to RAID 5 in function/performance ?
I think I answered this question in my last post in this thread.
Bye,
Leonard.
Hi Ed,
Thanks for your detail answer to my questions and time spent.
At 06:41 AM 12/19/2001 -0600, you wrote:
On Tue, 2001-12-18 at 23:04, Stephen Liu wrote:
At 06:40 AM 12/18/2001 -0600, you wrote:
RAID 5 is striping + mirroring. I recommend that this not be done on
IDE drives unless
On Thu, Dec 20, 2001 at 12:30:10AM +0800, Stephen Liu wrote:
Whether a special controller with 3 channels for connecting 3 hard
discs is
needed ?
You'll typically see 3-channel RAID controllers provide for 3 SCSI buses, not
3 ATA buses. Multiple drives on a SCSI bus can have I/O
Hi Leonard,
Thanks. I got it.
B.R.
Stephen
At 03:10 PM 12/19/2001 +0100, you wrote:
Hi Stephen,
Is RAID 0+1 similar to RAID 5 in function/performance ?
I think I answered this question in my last post in this thread.
Bye,
Thank Ed
B.R.
Stephen
At 11:06 AM 12/19/2001 -0600, you wrote:
On Thu, Dec 20, 2001 at 12:30:10AM +0800, Stephen Liu wrote:
Whether a special controller with 3 channels for connecting 3 hard
discs is
needed ?
You'll typically see 3-channel RAID controllers provide for 3 SCSI
On Mon, 2001-12-17 at 23:27, Stephen Liu wrote:
One additional question I expect to ask, in my case, whether it is
advisable to apply RAID to build the Web Server simultaneously because the
configuration of Apache, PHP, MySQL will keep me quite busy (I did it once
in 2 years ago). Is
is there a way to get the module to load up on kernel other then 2.4.2-2
right now the the only way i can get it working is using the kernel that
comes withe the driver every time i try antoher i get unresolved symbles
errors on the scsi
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Hash: SHA1
Generic Account 0568 wrote:
is there a way to get the module to load up on kernel other then 2.4.2-2
right now the the only way i can get it working is using the kernel that
comes withe the driver every time i try antoher i get unresolved symbles
Hi,
Thanks for your detail information.
At 06:40 AM 12/18/2001 -0600, you wrote:
RAID 5 is striping + mirroring. I recommend that this not be done on
IDE drives unless you've invested in extra controllers. You need at
least 3 drives to make a RAID 5 set.
Whether a special controller with 3
Hi, the Berkley Raid definitions define RAID 5 as striping with interleved
parity. because of the number of increased writes and read to commit an
actual write to disk, this method is normally used with caching in RAM using
fast writes as a method to improve performance. Striping + Mirroring is
Hi All People,
Is RH7.2 coming with software RAID
Can I make 4 (four) partitions in the same hard disc and intall RAID 0 and
RAID 1 to it. Where can I find relevant documentation ?
If I am wrong please correct me
Thanks in advance.
B.R.
Stephen Liu
On Mon, 2001-12-17 at 04:24, Stephen Liu wrote:
Is RH7.2 coming with software RAID
Yes. Red Hat Linux has offered software RAID for a few years.
Can I make 4 (four) partitions in the same hard disc and intall RAID 0 and
RAID 1 to it. Where can I find relevant documentation ?
RAID 0 on
Hi Stephen, Ed,
Yes. Red Hat Linux has offered software RAID for a few years.
I do miss a choice of the parity algorithm for RAID 5 in the installer
though. Not sure if that was added in 7.2.
Can I make 4 (four) partitions in the same hard disc and intall RAID 0 and
Hi Leonard,
Thanks for your response and advice.
At 03:25 PM 12/17/2001 +0100, you wrote:
The use of RAID 0 with stripes on a single disk is pointless. You want to
stripe to gain performance. But if you use stripes on a single disk you will
probably even loose some performance due to the
On Tue, Dec 18, 2001 at 12:05:27AM +0800, Stephen Liu wrote:
I am aware of hardware RAID on M$Win OS using a controller connecting to 2
hard discs. But I am interested to learn whether Linux offers software
controller to connect 2 hard discs. If Yes then how to make connection
to 2 discs
Hi,
At 11:06 AM 12/17/2001 -0600, you wrote:
I picked up a Promise TX2 ATA/100 controller from http://www.mwave.com for
less
than $30 and added 2 new ATA100 40GB drives to it.
I am using 2th Max 8KHA motherboard. Unfortunately it has only one FDD1
channel for ATA100 hard disc. Additionally
On Tue, Dec 18, 2001 at 01:32:20AM +0800, Stephen Liu wrote:
I am using 2th Max 8KHA motherboard. Unfortunately it has only one FDD1
channel for ATA100 hard disc. Additionally it has 2 ATA33 IDE channels
(altogether 3 channels). If I add an ATA100 controller then I shall have 3
ATA100
Hi Stephen,
I am using 2th Max 8KHA motherboard. Unfortunately it has only one FDD1
channel for ATA100 hard disc. Additionally it has 2 ATA33 IDE channels
(altogether 3 channels). If I add an ATA100 controller then I shall have 3
ATA100 channels, having a waste (5
Hi Stephen, Ed,
Ideally, you'd connect each drive to a separate IDE channel. It doesn't matter
if one is the master on its bus and the other is slave, as long as both drives
are on separate channels.
I would suggest you only use the devices as master, or it might be your
Hi, Ed Wilts,
Lot of thanks for your information.
I shall sum up all advices sent to me from those guys on the list first in
parallel penetrating relevant documentation before finalizing my way to
go.RAID 0, RAID 1, or RAID 5 , etc.?
My plan is to build a Web Server using Apache, PHP,
Hi Leonard,
Lot of thanks for your detail information and time
I shall digest those documentation first before finalizing my way to
go.RAID 0, RAID 1, or RAID 5 , etc.?
My plan is to build a Web Server using Apache, PHP, MySQL, etc. to
experience its function. I hesitate whether I
MPS WebCrew [EMAIL PROTECTED] wrote:
Yes, /dev/sda1 is my primary drive, and /dev/sda2 is the secondary drive
in the ex-RAID. It is where the data I was wanting to get from the backup is.
Hopefully you mean *partition* rather than *drive* since both sda1 and sda2
are on the same physical
MPS WebCrew [EMAIL PROTECTED] wrote:
OK, my question is now "how do I mount it?". I want to mount the mirror
of the "/" partition from inside dev/sda2. Does me a lot of good having a
backup when I can't get inside it!
Huh? I'm not following you. Your partition table looks like this
Yes, /dev/sda1 is my primary drive, and /dev/sda2 is the secondary drive in the
ex-RAID. It is where the data I was wanting to get from the backup is.
You are right in the fact that this is an extended partition. There should be two
partitions on it: 1) the mirror of "/" 2) the mirror of
On Wed, Apr 11, 2001 at 04:35:50PM -0500, MPS WebCrew a ecrit:
I previously had RAID mirroring setup on 2 SCSI hard disks in RH 7.0
[root@login admin]# mount -t ext2 /dev/sda2 /mnt/old
mount: wrong fs type, bad option, bad superblock on /dev/sda2,
or too many mounted file systems
OK, here is the output from that:
---
Disk /dev/sda: 255 heads, 63 sectors, 1112 cylinders
Units = cylinders of 16065 * 512 bytes
Device BootStart EndBlocks Id System
/dev/sda1 * 1 1046 8401963+ 83 Linux
/dev/sda2 1047 1112
MPS WebCrew [EMAIL PROTECTED] wrote:
OK, here is the output from that:
---
Disk /dev/sda: 255 heads, 63 sectors, 1112 cylinders
Units = cylinders of 16065 * 512 bytes
Device BootStart EndBlocks Id System
/dev/sda1 * 1 1046 8401963+ 83 Linux
OK, my question is now "how do I mount it?". I want to mount the mirror of the "/"
partition from inside dev/sda2. Does me a lot of good having a backup when I can't
get inside it!
Thanks!
Caleb Newville - MPS WebCrew
[EMAIL PROTECTED] 4/12 10:26a
MPS WebCrew [EMAIL PROTECTED] wrote:
Hi,
I previously had RAID mirroring setup on 2 SCSI hard disks in RH 7.0
Disk #1 died about a week ago, so I put in another drive and did a clean install of 7
point, which was really needed. Now I would like to mount the old drive as /mnt/old
or something, but here is what I do and what I
I should have mentioned in my previous post that I
was referring to software RAID.
Thanks
-Bernie
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You don't. That's as specified in the RAID HOW-TO.
Mark Lo wrote:
Hi,
I have software raid 1 running on my system, how can i find out
whether the raid is working properly without shutting down my server.
As I know, If there is a raid error, the system will prompt at the
startup
Mark Lo wrote:
Hi,
I have software raid 1 running on my system, how can i find out
whether the raid is working properly without shutting down my server.
As I know, If there is a raid error, the system will prompt at the
startup time. So , how to find out whether the raid
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