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Disk mirroring
Post 60955 by malcom on Wednesday 26th of January 2005 03:44:12 AM
01-26-2005
Hi,
it is the primary OS boot disk, and using dd on linux is a bit critical. The systems I wnt to mirror, are mostly NFS Fileservers. The dd command forces the linux system to flush all dirty pages, you can imagine what happens in that situation with the system
It stalls ...
Therefore, I can everything except dd
But dd was also my first idea, until this experience...
I already did some testings with rsync and it looks not so bad ..
it is the primary OS boot disk, and using dd on linux is a bit critical. The systems I wnt to mirror, are mostly NFS Fileservers. The dd command forces the linux system to flush all dirty pages, you can imagine what happens in that situation with the system
It stalls ...Therefore, I can everything except dd
But dd was also my first idea, until this experience...I already did some testings with rsync and it looks not so bad ..
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LEARN ABOUT OPENSOLARIS
mkfs.minix
MKFS.MINIX(8) System Administration MKFS.MINIX(8) NAME
mkfs.minix - make a Minix filesystem SYNOPSIS
mkfs.minix [options] device [size-in-blocks] DESCRIPTION
mkfs.minix creates a Linux MINIX filesystem on a device (usually a disk partition). The device is usually of the following form: /dev/hda[1-8] (IDE disk 1) /dev/hdb[1-8] (IDE disk 2) /dev/sda[1-8] (SCSI disk 1) /dev/sdb[1-8] (SCSI disk 2) The device may be a block device or a image file of one, but this is not enforced. Expect not much fun on a character device :-). The size-in-blocks parameter is the desired size of the file system, in blocks. It is present only for backwards compatibility. If omit- ted the size will be determined automatically. Only block counts strictly greater than 10 and strictly less than 65536 are allowed. OPTIONS
-c, --check Check the device for bad blocks before creating the filesystem. If any are found, the count is printed. -n, --namelength length Specify the maximum length of filenames. Currently, the only allowable values are 14 and 30 for file system versions 1 and 2. Ver- sion 3 allows only value 60. The default is 30. -i, --inodes number Specify the number of inodes for the filesystem. -l, --badblocks filename Read the list of bad blocks from filename. The file has one bad-block number per line. The count of bad blocks read is printed. -1 Make a Minix version 1 filesystem. This is the default. -2, -v Make a Minix version 2 filesystem. -3 Make a Minix version 3 filesystem. -V, --version Display version information and exit. The long option cannot be combined with other options. -h, --help Display help text and exit. EXIT CODES
The exit code returned by mkfs.minix is one of the following: 0 No errors 8 Operational error 16 Usage or syntax error SEE ALSO
fsck(8), mkfs(8), reboot(8) AVAILABILITY
The mkfs.minix command is part of the util-linux package and is available from https://www.kernel.org/pub/linux/utils/util-linux/. util-linux June 2015 MKFS.MINIX(8)