You can split up the DASD into equally sized minidisks and if you stripe the LV, then Linux will initiate multiple I/Os across howewever many physical volumes (minidisks) you have in the group. Depending on how many paths there are to the mod-27 device, there may be a performance benefit(?).
Ray Mrohs Energy Information Administration U.S. Department of Energy -----Original Message----- From: Rich Smrcina [mailto:[EMAIL PROTECTED] Sent: Thursday, April 14, 2005 12:31 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: Can I make LVM by 1 DASD? Resizing those filesystems would be easier. But being the VM bigot, I prefer the minidisk approach myself. Adam Thornton wrote: > On Apr 14, 2005, at 11:08 AM, mainframe_s390 wrote: > >> Hi,all >> >> I want to make Logical Volume using only 1 DASD. >> The DASD type is 3390-27type.(about 32000cyls.) >> I will make LV via YaST. >> The 3390-27type DASD will have about 30LVs. >> >> Can I make LVs as above? >> > If you're running VM, you can certainly divide your mod-27 up into a > whole lot of minidisks, and then use them as separate devices. No > Linux-level LVM required. > > If you're not, it might be possible to create a volume group with just > a single extent in it and then divide that into multiple logical > volumes, but I don't see what benefit you would gain from that. > > Adam > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or > visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > -- Rich Smrcina VM Assist, Inc. Main: (262)392-2026 Cell: (414)491-6001 Ans Service: (866)569-7378 rich.smrcina at vmassist.com Catch the WAVV! http://www.wavv.org WAVV 2005 - Colorado Springs - May 20-24, 2005 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
