KERNEL CCISS DRIVER

This program is licensed under the Gnu GPL v. Please visit this page to clear all LQ-related cookies. Note also that if no sequential access devices or medium changers are detected, the SCSI core will not be engaged by the action of the above script. The system root partition did not appear, and eventually i ended up in the emergency shell. Also, both the drivers cciss ans hpsa was loaded. There are no changes in the cciss modified driver that can affect performance. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features.

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SCSI error handling for tape drives and medium changers The Linux SCSI midlayer provides an error-handling protocol that is initiated whenever a SCSI command fails to complete within a certain amount of time which can vary depending on the command. The function prints a message then retries the command that returned with a unit attention. This is because at driver init time, the SCSI core may not yet be initialized because the driver is a block driver and attempting to register it with the SCSI core in such a case would cause a hang.

The monitor threads allow the driver to detect such. In case the system got updated with the new kernel before the above mentioned patch of the boot parameters, and did not succed in booting. If the command cannot be aborted and the device cannot be reset, the device will be set offline.

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I can’t comment on this much as I haven’t tried it, but kernrl my so far very brief perusing of the code it appears to be alright at first glance, basically doing the expected things.

Use these for systems using 2. BB code is On.

Therefore, the cciss driver implements only the first two of these actions, aborting the command, and resetting the device. Here’s a sample report from arrayprobe 2.

Ubuntu Manpage: cciss – HP Smart Array block driver

Join Date Sep Location Behind you! May 6th, 3. The time now is The hpsa driver is available in the kernel. Ccss 7th, 7.

One would have expected a more professional approach from the kernel team than just “meh, it probably works”.

Documentation/ – pub/scm/linux/kernel/git/ralf/linux – Git at Google

So i rolled back to kernel version 3. With all the various distributions, it is difficult to come up with a set of bulletproof universal instructions for making such a switch, so we recommend that you simply continue to use cciss in such instances. Again, the monitoring thread will not exit until the previous polling. Please visit this page to clear all LQ-related cookies.

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CONFIG_BLK_CPQ_CISS_DA: Compaq Smart Array 5xxx support

So far, I haven’t had any luck duplicating this problem. There are no changes in the cciss modified driver that can affect performance. In this case, it is just a text file, documentation, meant for human consumption.

If you’re already running cciss on these devices, and upgrade to a kernel containing the hpsa driver, you shouldn’t have to do anything, as cciss will continue to claim these devices. Last updated March 4, latest version is 3. To install, download the RPM file, and use rpm -ihv rpmfile This will deposit the cciss. Here’s the man page. ONLY sequential kerne, devices and medium changers are presented.

To disable the monitoring thread, set the polling interval to 0 seconds: If necessary, deb package will compile kernel as well. The reason however for the requirement of upgrade is that Amanda had started to exhibit regression errors which weren’t being fixed in The current list of supported controllers for hpsa: In the event that a deadline elapses before a no.

Support for more than 8 controllers. The disks can actually come up in whatever order.