Visit The New, Modern Unix Linux Community


is mdadm --incremental --rebuild --run --scan destructive?

 
Thread Tools Search this Thread
Special Forums UNIX and Linux Applications Virtualization and Cloud Computing is mdadm --incremental --rebuild --run --scan destructive?
# 1  
is mdadm --incremental --rebuild --run --scan destructive?

Hello Unix Community:

My task to figure out how to add a 20G volume to an existing EBS Array (RAID0) at AWS.

I haven't been told that growing the existing volumes isn't an option, or adding another larger volume to the existing array is the way to go. The client's existing data-store is growing fast and he needs more space.
The boss said "Add".... but I am free to conceptualize some solutions he may not have thought of.

I have RTFM'd today for about 3 hours and came to these 2 possibilities. Add or grow...

After a cursory review (and some in depth reading) I am uncertain, so I have to ask
is "mdadm --incremental --rebuild --run --scan" destructive to data or will it simply incorporate the new volume into the designated mdX?

Code:
-I, --incremental
Add a single device into an appropriate array, and possibly start the array.

"Possibly start the array" implies that it is not started, but what if the array is already started?

I further wonder if I can just create a new volume and edit the /etc/mdadm/mdadm.conf
and --scan and/or --rebuild and if that would be destructive?

Thank you for your time.

Edit: Solved. See https://www.unix.com/virtualization-c...array-aws.html

Last edited by Habitual; 07-18-2011 at 08:36 PM..

Previous Thread | Next Thread
Thread Tools Search this Thread
Search this Thread:
Advanced Search

Test Your Knowledge in Computers #301
Difficulty: Easy
Slackware was originally derived from the Software Linux System (SLS).
True or False?

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

How to fix mistake on raid: mdadm create instead of assemble?

Hi guys, I'm new to RAID although I've had a server running raid5 for a while. It was delivered preinstalled like this and I never really wondered how to monitor and maintain it. This quick introduction just to let you understand why I'm such an idiot asking such a silly question. Now what... (0 Replies)
Discussion started by: chebarbudo
0 Replies

2. Filesystems, Disks and Memory

MDADM Failure - where it came from?

Hello, i have a system with 6 sata3 seagate st3000dm01 disks running on stable Debian with software raid mdadm. i have md0 for root and md1 for swap and md2 for the files. i now want to add one more disk = sdh4 for md2 but i got this errors: The new disk is connected to an 4 port sata... (7 Replies)
Discussion started by: Sunghost
7 Replies

3. HP-UX

Format unit requires destructive mode???

I am trying to format a Seagate 2 Gb SCSI drive using the HP-UX 9.0 support disc and I receive a message that says: DESTRUCTIVE MODE REQUIRED TO EXECUTIVE THIS COMMAND (SCD2WARN 106). I have entered this command several times on other SCSI drives and never got this message. Anyone ever see this... (8 Replies)
Discussion started by: edspit
8 Replies

4. Red Hat

mdadm for / and /boot

had this RHEL 5 installation with /dev/sda1 and /dev/sda2 running.. created two more partitions /dev/sdj1 and /dev/sdj2 , the same sized partition as /dev/sda trying to use mdadm to create RAID1 .. I cannot even do it in "rescue" mode, I wonder if it can be done.. it kept... (2 Replies)
Discussion started by: ppchu99
2 Replies

5. Cybersecurity

Destructive one word unix commands

Hi I'm trying to hack a web server as part of an assignment and have gotten it to exec commands but I cannot pass commands arguments as the program splits up space separated words and only execs the first one. Is there anything I can pass to cause any sort of damage in one word? Btw webserver runs... (1 Reply)
Discussion started by: aydinh
1 Replies

6. UNIX for Advanced & Expert Users

mdadm container! How does it work

Hi everyone, I am not sure if I understand how mdadm --create /dev/md0 --level=container works? A device called /dev/md0 appears in /proc/mdstat but I am not sure how to use that device? I have 2 blank drives with 1 500GB partition on each. I would like to setup mirroring, but not in the... (0 Replies)
Discussion started by: hytron
0 Replies

7. UNIX for Advanced & Expert Users

mdadm question

Hello, I have 4 drives (500G each) in a raid 10, I got a power failior and this is the result? cat /proc/mdstat Personalities : md126 : inactive sdb sdc sdd sde 1953536528 blocks super external:-md127/0 md127 : inactive sdd(S) sde(S) sdb(S) sdc(S) 9028 blocks super... (3 Replies)
Discussion started by: rmokros
3 Replies

8. Emergency UNIX and Linux Support

mdadm unable to fail a resyncing drive?

Hi All I have a RAID 5 array consisting of 4 drives that had a partial drive failure in one of the drives. Rebooting shows the faulty drive as background rebuilding and mdadm /dev/ARRAYID shows three drives as in sync with the fourth drive as spare rebuilding. However the array won't come... (9 Replies)
Discussion started by: Bashingaway
9 Replies

9. Linux

mdadm - Swapping 500GB disks for 1TB

Hi, I have a three disk raid 5, with 500GB disks. This is close to being full, and whilst I can just add another disk and rebuild to add another 500GB, I would prefer to replace with 1TB disks. So i have some questions. Can I replace these disks one by one with bigger disks? I... (1 Reply)
Discussion started by: snoop2048
1 Replies

10. Shell Programming and Scripting

Self destructive script

How should i write a script so that the script will destroy(delete) itself once it completes execution. Thanks? (7 Replies)
Discussion started by: proactiveaditya
7 Replies

Featured Tech Videos