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So your /proc/mdstats looks something like this: md0 : active raid6 sdn1 6 (S) sdm1 5 sdk1 3 (F) sdj1 2 sdh1 1 (F) sdg1 0 (F.
Softraid linux software#
In the following it is assumed that you have a software RAID where a disk more than the redundancy has failed. Currently two disks (sda & sdb) are included, so adjust for your setup. The software RAID in Linux is well tested, but even with well tested software, RAID can fail.
Softraid linux install#
Install the “smartmontools” package which reads the S.M.A.R.T information from the hard drive controller and presents it to us.Įcho "Subject: S.M.A.R.T monitor Threshold breached" > $temp_email_file *Because it is very possible that the hardware RAID controller blocks the system’s access to this information. You will see me use VIM as the editor program, this is just because I’m used to it… you may use any other editor that you’d like.You’re not using a *hardware RAID controller.
Softraid linux how to#
You have already setup Email support for the server using the “ How To Setup Email Alerts on Linux” guide.This script, when run once a day with cron, will alert if any of the system’s Hard Drives bad sectors count has reached a limit that is deliberately lower then “the disk is bad” threshold, and email the warning to the machine’s administrator. Moreover, how would you know about it without manually logging into the server? However on a headless server (no GUI) there is no service that will inform you of the pending doom before it is too late. 8.Programs like the “mdadm” (for software RAID management) and the “Palimpsest Disk Utility” (used on the Ubuntu LiveCD), use the S.M.A.R.T information to inform you when the disk is about to or has failed.7.7 Sharing spare disks between different arrays.7.6 Converting a non-RAID RedHat System to run on Software RAID.5.2 Downloading and installing the RAID tools.Many considered far more stable that the older RAID support already in Support is available as patches to Linux-2.0 and Linux-2.2, and is by Used by Linux-2.2 kernels shipped from some vendors. That is the standard in Linux-2.4, and it is the version that is also ItĪddresses a specific version of the Software RAID layer, namely theĠ.90 RAID layer made by Ingo Molnar and others. This HOWTO describes how to use Software RAID under Linux. This HOWTO is deprecated the Linux RAID HOWTO is maintained as a wiki by the The Software-RAID HOWTO Jakob Østergaard Emilio Bueso