Kit, With the growing size of disk drives, and a more sectors allocated to reserve sectors, the number of defects alone is not a big concern, expecially if they are PRIMARY defects (found at manufacture-time). What would be of concern, is an increase in the number of GROWN defects over a short period of time. Unfortunately, it is quite common for one defect to cause a disk to be replaced, when it could be remapped without the expense and trouble of a field replacement.
The automatic remapping of grown defects is a feature of SCSI disks, but may not be configured in the disk's mode pages. The mode pages can be changed without affecting the content of the disk (with the exception of size & sector mapping parameters). There are several Linux tools to read/set mode pages, among which is 'sgmode' from http://scsirastools.sf.net. As a guess, it appears that you had a grown defect occur on one of your disks, but the remapping was not set to occur automatically on that disk, so a write never finished. Andy -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kit Gerrits Sent: Monday, January 31, 2005 9:28 AM To: linux-scsi@vger.kernel.org Subject: Disk errors Exactly how many errors is a SCSI disk allowed to have? I have a PE2400 with a PERC2/Si with 4x9GB My disks show: AFA0> disk show defects 0 Executing: disk show defects (ID=0) Number of PRIMARY defects on drive: 1912 Number of GROWN defects on drive: 0 AFA0> disk show defects 1 Executing: disk show defects (ID=1) Number of PRIMARY defects on drive: 952 Number of GROWN defects on drive: 1 AFA0> disk show defects 2 Executing: disk show defects (ID=2) Number of PRIMARY defects on drive: 2457 Number of GROWN defects on drive: 0 AFA0> disk show defects 3 Executing: disk show defects (ID=3) Number of PRIMARY defects on drive: 2794 Number of GROWN defects on drive: 0 The reason I ask is tha tmy O/S (RedHat Enterprise Linux 3.0) has recently hung with the error: I/O Error Dev 08:05 Sector 529712 I would assume that this error is generated by the harddrive, but shouldn't the controller catch SCSI errors (and relocate sectors automagically)? Thanks in advance, Kit Gerrits [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
