On Wed, 26 Sep 2001, Joseph L. Hill wrote: > Its set up with raid 5 w/parity on the three drives using hardware raid > via megaraid v107. I added a 4th drive and found a utility called > MegaMgr on the web and added the 4th physical drive to the logical drive > then reconstructed the raid and judging by disk light activity the > reconstruction worked and it is writing to all 4 drives in the array. > However, df doesn't reflect any difference in avail storage.
The MegaRAID tools (MegaManager, or the pre-boot firmware utility) will let you resize the array, but that only gives you a bigger RAID volume. The partition(s) and filesystem(s) on that volume will remain unchanged. Also, you may have to reboot Linux before the kernel will see the new size of the RAID volume. You have a couple options: 1. Create additional partition(s) on the newly-enlarged RAID volume, add those partitions to the system, and (if needed) move existing data into them. 2. Use a partition/filesystem resize program to expand your existing partitions(s) to use the entire RAID volume. Examples of such programs include resize2fs, GNU parted, and PartitionMagic (a commercial product). Note that, for the second option, most such utilities require you to unmount the filesystem while you resize it. That may present difficulties if you want or need to resize your root partition. Please make sure you have a carefully tested backup before you try any of this. Resizing volumes/partitions/filesystems is an inherently dangerous operation, regardless of operating system. <PLUG> The company I work for can provide professional assistance, if you require it. </PLUG> -- Ben Scott <[EMAIL PROTECTED]> | The opinions expressed in this message are those of the author and do not | | necessarily represent the views or policy of any other person, entity or | | organization. All information is provided without warranty of any kind. | ********************************************************** To unsubscribe from this list, send mail to [EMAIL PROTECTED] with the following text in the *body* (*not* the subject line) of the letter: unsubscribe gnhlug **********************************************************
