12-16-2008
Quote:
Originally Posted by
tien86
Could anyone make sure for me:
database replicates are always occupy a whole slice? (cannot make a filesystem on that slice ?)
always need a database slice for each mirror hard disk?
i haven't setup the metadb yet. I think my installed solaris is not configure well, it is hostname disappear, cannot run "raidctl" cmd and etc. it is not a good start point for me.
Quote:
Originally Posted by
jlliagre
Webster5u: there is no reason to be concerned about the missing target on your disks. It is just they are (virtual) IDE disks, not SCSI/SATA ones.
What I was suggesting (adding two new disks and implement ZFS on them) is a very simple and straightforward solution. I'm disappointed to see you seem to prefer the complex way (SVM).
jlliagre, thank for your comment. it is really thank, i am currently assign into a project. i have to understand exactly how system administrator done to our company server. ZFS will be my alternative choice.
whatever, thank all of your.
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LEARN ABOUT CENTOS
addbadsec
addbadsec(1M) System Administration Commands addbadsec(1M)
NAME
addbadsec - map out defective disk blocks
SYNOPSIS
addbadsec [-p] [ -a blkno [blkno...]] [-f filename] raw_device
DESCRIPTION
addbadsec is used by the system administrator to map out bad disk blocks. Normally, these blocks are identified during surface analysis,
but occasionally the disk subsystem reports unrecoverable data errors indicating a bad block. A block number reported in this way can be
fed directly into addbadsec, and the block will be remapped. addbadsec will first attempt hardware remapping. This is supported on SCSI
drives and takes place at the disk hardware level. If the target is an IDE drive, then software remapping is used. In order for software
remapping to succeed, the partition must contain an alternate slice and there must be room in this slice to perform the mapping.
It should be understood that bad blocks lead to data loss. Remapping a defective block does not repair a damaged file. If a bad block
occurs to a disk-resident file system structure such as a superblock, the entire slice might have to be recovered from a backup.
OPTIONS
The following options are supported:
-a Adds the specified blocks to the hardware or software map. If more than one block number is specified, the entire list should be
quoted and block numbers should be separated by white space.
-f Adds the specified blocks to the hardware or software map. The bad blocks are listed, one per line, in the specified file.
-p Causes addbadsec to print the current software map. The output shows the defective block and the assigned alternate. This option
cannot be used to print the hardware map.
OPERANDS
The following operand is supported:
raw_device The address of the disk drive (see FILES).
FILES
The raw device should be /dev/rdsk/c?[t?]d?p0. See disks(1M) for an explanation of SCSI and IDE device naming conventions.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Architecture |x86 |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
disks(1M), diskscan(1M), fdisk(1M), fmthard(1M), format(1M), attributes(5)
NOTES
The format(1M) utility is available to format, label, analyze, and repair SCSI disks. This utility is included with the addbadsec,
diskscan(1M), fdisk(1M), and fmthard(1M) commands available for x86. To format an IDE disk, use the DOS "format" utility; however, to
label, analyze, or repair IDE disks on x86 systems, use the Solaris format(1M) utility.
SunOS 5.10 24 Feb 1998 addbadsec(1M)