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?
"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?
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)
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)
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)
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)
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)
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)
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)
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)
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
LEARN ABOUT HPUX
lvmpvg
lvmpvg(4) Kernel Interfaces Manual lvmpvg(4)NAME
lvmpvg - LVM physical volume group information file
SYNOPSIS DESCRIPTION
is an ASCII file that stores the volume-group information for all of the physical volume groups in the system. The information is stored
in a hierarchical format.
First, it starts with a volume group under which multiple physical volume groups can exist. Under each physical volume group, a list of
physical volumes can be specified. There must be at least one physical volume group in each volume group that appears in this file. The
physical-volume-group name must be unique within the corresponding volume group, although it is permissible to use a common physical volume
group name across different volume groups. There can be as many volume groups in this file as there are in the system.
Instead of using the and commands, the administrator can edit this file to create and extend physical volume groups. However, care must be
taken to ensure that all physical volumes to be included in the file have already been defined in their respective volume groups by previ-
ous use of or
The file format has the following structure. and are keywords that introduce the names of the volume group and physical volume group,
respectively.
pv_path
...
pv_path
...
pv_path
...
The variables are defined as follows:
pv_path The block device path name of a physical volume within the volume group.
pvg_name The name of the physical volume group. It must be unique within the volume group.
vg_name The path name of the volume group.
EXAMPLES
The following example shows an file containing two volume groups: the first containing two physical volume groups, each with two physical
volumes defined in it; the second containing three physical volume groups, each with one physical volume defined in it.
SEE ALSO vgcreate(1M), vgextend(1M), vgreduce(1M), vgremove(1M), intro(7), lvm(7).
lvmpvg(4)