10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi there,
I've setup a raid0 array of 3 identical disks using :
mdadm --create --verbose /dev/md0 --level=stripe --raid-devices=3 /dev/sdb1 /dev/sdc1 /dev/sdd1I'm using dstat to monitor the disk activity :
dstat --epoch -D sdb,sdc,sdd --disk-util 30The results show that the stress is not... (8 Replies)
Discussion started by: chebarbudo
8 Replies
2. Solaris
Hello all, this is my first time posting here. Where I work we have multiple servers (x3-2's) running Solaris 10u11 with 2 drives configured as RAID0, 300GB per. There are 4-6 open slots for drives to clone to.
Past attempts to clone/backup these drives has failed. One of the machines is... (1 Reply)
Discussion started by: eprlsguy
1 Replies
3. Hardware
Hey all,
I've got an old HP9000 L1000 server with HP-UX installed. The drives that the OS is running on are in RAID0. I am concerned for the reliability of the server. The four hard drives in the front of the server are LVD 18.2 drives. I know with RAID0, if one drive fails, they all fail. ... (2 Replies)
Discussion started by: mroselli
2 Replies
4. UNIX for Dummies Questions & Answers
i'm trying to decide if to move operations from one of these hosts to the other. but i cant decide which one of them is the most powerful.
each host has 8 cpus.
HOSTA
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 44
model name : Intel(R) Xeon(R) CPU ... (6 Replies)
Discussion started by: SkySmart
6 Replies
5. UNIX for Advanced & Expert Users
Hi,
I have this mirrored system with soft-partitions.
I have a difficulty determining the lucreate cmd in this env.
#metastat -p
d0 -m d10 d20 1
d10 1 1 c1t2d0s0
d20 1 1 c1t3d0s0
d1 -m d11 d21 1
d11 1 1 c1t2d0s5
d21 1 1 c1t3d0s5
d100 -p d1 -o 58720384 -b 8388608
d200 -p d1 -o... (1 Reply)
Discussion started by: chaandana
1 Replies
6. Linux
Hi,
I have the Lacie Big Disk, which is a external hard drive enclosure in a hardware RAID0 array of 2x250GB disks. The RAID controller seems to have died, leaving me with 2 working hard drives but no way to get the data. I tried hooking the drives up to a windows machine and using Raid... (4 Replies)
Discussion started by: dangral
4 Replies
7. UNIX for Dummies Questions & Answers
i)wc -c/etc/passwd|awk'{print $1}'
ii)ls -al/etc/passwd|awk'{print $5}' (4 Replies)
Discussion started by: karthi_g
4 Replies
8. Solaris
friends,
Suppose I am typing metastat command and it is showing:
d100: Concat/Stripe
Size: 369495 blocks (180 MB)
Stripe 0: (interlace: 32 blocks)
Device Start Block Dbase Reloc
c1d0s0 16065 Yes Yes
c1d0s1 0 No Yes... (4 Replies)
Discussion started by: saagar
4 Replies
9. Shell Programming and Scripting
Hi ,
I need to copy every day about 35GB of files from one file system to another.
Im using the cp command and its toke me about 25 min.
I also tried to use dd command but its toke much more.
Is there better option ?
Regards. (6 Replies)
Discussion started by: yoavbe
6 Replies
10. IP Networking
For some reason 8.1 Mandrake Linux seems much slower than Windows 2000 with my cable modem. DSL reports test says they conferable speed with Windows2 though.
This is consistant slow with both of my boxes, at the same time. Linux used to be faster, but not with Mandrake. Any way to fix this? (17 Replies)
Discussion started by: lancest
17 Replies
raidstart(8) System Manager's Manual raidstart(8)
NAME
raidstart, raidstop, - command set to manage md devices.
SYNOPSIS
raidstart [options] <raiddevice>*
raidstop [options] <raiddevice>*
DESCRIPTION
RAID devices are virtual devices created from two or more real block devices. This allows multiple disks to be combined into a single
filesystem, possibly with automated backup and recovery. Linux RAID devices are implemented through the md device driver.
If you're using the /proc filesystem, /proc/mdstat gives you informations about md devices status.
Currently, Linux supports linear md devices, RAID0 (striping), RAID1 (mirrroring), and RAID4 and RAID5. For information on the various lev-
els of RAID, check out:
http://ostenfeld.dk/~jakob/Software-RAID.HOWTO/
for new releases of the RAID driver check out:
ftp://ftp.fi.kernel.org/pub/linux/daemons/raid/alpha
Avaible commands are :
mkraid : configures (creates) md (RAID) devices in the kernel, banding multiple devices into one.
raidstart : activates (starts) an existing 'persistent' md device
raid0run : activates old nonpersistent RAID0/LINEAR md devices
raidstop : turns off an md device, and unconfigures (stops) it
By default, a systems RAID configuration is kept in /etc/raidtab, which can configure multiple RAID devices.
All of these tools work similiarly. If -a (or --all) is specified, the specified operation is performed on all of the RAID devices men-
tioned in the configuration file. Otherwise, one or more RAID devices must be specified on the command line. For example:
raid0run -a
Starts all of the 'old' RAID0 RAID devices specified in /etc/raidtab. If only /dev/md1 should be started, the following command should be
used instead:
raidstart /dev/md1
OPTIONS
-a, --all
Apply the command to all of the configurations specified in the config file.
-c, --configfile filename
Use filename as the configuration file (/etc/raidtab is used by default).
-h, --help
Displays a short usage message, then exits.
-V, --version
Displays a short version message, then exits.
NOTES
The raidtools are derived from the md-tools and raidtools packages, which were originally written by Marc Zyngier, Miguel de Icaza, Gadi
Oxman, Bradley Ward Allen, and Ingo Molnar.
BUGS
no known bugs.
SEE ALSO
raidtab(5), raid0run(8), raidstop(8), mkraid(8)
raidstart(8)