Powered by Trac 1. Hosting sponsored by http: On the other hand, performance is actually improved during reads. The packages comes with an initscript that periodic run mpt-status to check status. The current Media Verification Logical Block Address is written to nonvolatile memory occasionally to allow media verification to continue approximately where it left off prior to a power-cycle. It will log a ligne to syslog when something failed and will send you a mail. The usable disk space for each member disk is adjusted down when the configuration is created, in order to leave room for this data.
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If the firmware fails one of the mirrored disks, it automatically replaces the failed disk with a hot-spare disk and then re-synchronizes the mirrored data. SMART is a technology that monitors hard disk drives for signs of future disk failure and generates an alert if such signs are detected. You can now try to run smartctl against one of the scsi generic devices you will have to figure out by yourself which one to use:.
The hot-swapped disk is automatically re-synchronized in the background, without any host or user intervention. Despite it fsuion that no real upstream development exists for this tool, it works fine and is reliable. The packages comes with an initscript that periodic run mpt-status to check status. A proprietary management tool also exists, see below. On the other hand, performance is actually improved during reads.
Host-based status software monitors the state of the mirrored disks and reports any error conditions. IM volumes have two mirrored disks; IME volumes have three to ten mirrored disks. Re-synchronization is attempted after a hot-spare is activated due to a physical device failure, or after a hot swap has occurred to a physical disk in the volume. If disk write caching were enabled not recommendedthe disk write log could be invalid.
Somes seems to be required dependencies.
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Management and reporting tools 3. The current Media Verification Logical Block Address is written to nonvolatile memory occasionally to allow media verification to continue approximately where it left off prior to a power-cycle. I haven’t use it much, so here is a quick example of what it can do:.
An IME volume can be configured with up to ten mirrored disks.
The firmware re-synchronizes all hot-swapped disks that have been removed, even if the same disk is re-inserted.
Write journaling, which allows automatic synchronization of potentially inconsistent data after unexpected power-down situations. In most case, your controller ID will be 0. The two volumes can have up to twelve disk drives total, mpy one or two hot-spare disks.
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Its sources for Linux systems are available but the license is not specified. Following a hot swap event, the firmware readies the new physical disk by spinning it up and verifying that it has enough capacity for the mirrored volume. The firmware then automatically re-mirrors the swapped disk. The firmware fussion all data from the primary disk onto the new secondary disk.
When the firmware is initialized, each member disk is queried to read the stored metadata in order to verify the configuration. This tool comes from LSI. Until arrays are healthy again a reminder will be sent each 2 hours.
LSI SAS 9300-8i and 9300-8e HBAs Review
The firmware detects hot swap removal and disk insertion. Linux kernel drivers 3.
The firmware polls each physical disk in the volume at regular intervals. Fusio hot-spares are in addition to the disk maximum for two volumes per SAS controller. An opensource reporting tool named mpt-status has been developped. Many thanks to them for good work! We experienced several disks failure on MPT SAS controllers and mpt-status always reported the failure and status changes.