- Community Home
- >
- Servers and Operating Systems
- >
- Operating Systems
- >
- Operating System - Linux
- >
- mdadm limit to 255 devices
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-25-2008 11:38 AM
тАО09-25-2008 11:38 AM
It looks mdadm is limited to 255 devices max, it refuses to assemble an array with minor number > 255
Setup: RHEL AS 4.6 and RHEL AP 5.2, SGLX 11.18, XDC 01.02
Any idea ?
Solved! Go to Solution.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-25-2008 04:44 PM
тАО09-25-2008 04:44 PM
Re: mdadm limit to 255 devices
Everything has a limit.
Do you really want to assemble a raid array with more than 255 disks?
See about using a minor number less than 255.
sysctl -a
If this limit is controlled by a dynamic kernel parameter you may be able to raise it.
SEP
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-25-2008 07:20 PM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-26-2008 01:05 AM
тАО09-26-2008 01:05 AM
Re: mdadm limit to 255 devices
Thanks for your replies.
Steven, it's not in terms of underlying devices as it looks you can have as much PV's as you want, or at least there is no 255 PV's limitations but in terms of /dev/md devices.
My need is that I'm building a SGLX cluster with XDC, for a few tens of databases which have distinct vg's for data, logs, etc..., vg's that will be paired by xdc (so md) and I'm afraid I'll be very fast reaching this limit.
Thanks anyway
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО10-03-2008 04:27 AM
тАО10-03-2008 04:27 AM
Re: mdadm limit to 255 devices
Thread closed.