Actually, different LPAR but the same CPU, same DASD box, same DASD devices, same minidiskextents, same minidisks. So other than the LPAR-ID for this VM it should be identical. I don't know for sure is the by-uuid and/or by-id would be the same between the two LPARs. Indeed, the by-path is the same. I would also expect the dasdxx to be the same. Meaning, dev 200 is dasda, 201 is dasdb and so on.
When I look in the /dev/disk/by-path it links to the /dev/dasdxx devices. So in that case once again, if /dev/dasde1 is not available, how can /dev/disk/by-path find it's volumes? In fact, listing the directory (yes we DDR'ed the / disk before fixing the errors) I can't find neither /dev/dasde1 nor /dev/disk/by-path/ccw-0.0.0204*. And /dev/dasdkk1 doesn't exist, so ..by-path/ccw-0.0.0328p1 shows a broken link. Berry. -----Original Message----- From: Linux on 390 Port [mailto:[email protected]] On Behalf Of David Boyes Sent: dinsdag 23 februari 2010 14:22 To: [email protected] Subject: Re: Devices disappeared from /dev This is why I always recommend using by-path references in /etc/fstab rather than the dasdxx entries. What happened is that something disturbed the order of DASD detection -- moving the guest to different disks on a different system, in your case -- and the system detected the disks and assigned them to some other dasdxx entry. Udev is supposed to handle this better, but it doesn't always work, where the by-path entries DO always work (at least as long as you don't change the virtual address at which the disk is presented to the virtual machine, at which point: your gun, your foot). Avoid relying on dasdxx entries. As you discovered, they'll bite you. --d b ---------------------------------------------------------------------- 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
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