[Bug 224171] Re: Upgrade to 8.04 (Hardy) trashed RAID Array
Hardy release notes have long since passed. Marking the ubuntu-release- notes as Invalid. Thanks. ** Changed in: ubuntu-release-notes Status: Confirmed = Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/224171 Title: Upgrade to 8.04 (Hardy) trashed RAID Array To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-release-notes/+bug/224171/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 224171] Re: Upgrade to 8.04 (Hardy) trashed RAID Array
This should be in the release notes, not the website. ** Project changed: ubuntu-website = ubuntu-release-notes -- Upgrade to 8.04 (Hardy) trashed RAID Array https://bugs.launchpad.net/bugs/224171 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 224171] Re: Upgrade to 8.04 (Hardy) trashed RAID Array
Thank you for taking the time to report this bug and helping to make Ubuntu better. For reasons explained already, the issue has already been resolved. ** Changed in: mdadm (Ubuntu) Status: New = Invalid -- Upgrade to 8.04 (Hardy) trashed RAID Array https://bugs.launchpad.net/bugs/224171 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 224171] Re: Upgrade to 8.04 (Hardy) trashed RAID Array
Documentation still does not explain how to use UUID instead of hd?/sd? to build and maintain the RAID configuration. A quick search of the community maintained documentation for example: https://help.ubuntu.com/community/Installation/SoftwareRAID https://help.ubuntu.com/community/Installation/FileServerWithRAID -- Upgrade to 8.04 (Hardy) trashed RAID Array https://bugs.launchpad.net/bugs/224171 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 224171] Re: Upgrade to 8.04 (Hardy) trashed RAID Array
Thanks for the link - its the first time I heard about this having come to Ubuntu after Edgy and from SuSe 9.2. I long as I have known Linux, IDE disk devices have always been entirely predictable from the cabling. It's the SCSI, SATA and USB drives that have a predictability problem - so I am not sure that messing with them was worth the effort. BTW, the bug also affects tapes. My IDE attached tape changed from /dev/ht0 to /dev/st0 at the same time! Going back to an earlier backup, this is what my fstab looked like before the upgrade to 8.04: # /etc/fstab: static file system information. # # file system mount point type options dump pass proc/proc procdefaults0 0 # /dev/hda6 UUID=9d716e44-0a7f-4abb-abd1-6f7cf8dc0173 / ext3 defaults,errors=remount-ro 0 1 # /dev/hda5 UUID=03826fd9-2e03-4510-b630-f1e849c87f1d noneswapsw 0 0 /dev/hdc/media/cdrom0 udf,iso9660 user,noauto 0 0 /dev/md0 /raiddisk reiserfs rw,acl,user_xattr 0 0 /dev/fd0/media/floppy0 autorw,user,noauto 0 0 Note that the /dev/hda entries had been commented out. I assume this is by the Ubuntu installer as I don't remember doing this. I am not surprised to see this as hard linking a system disk to a UUID seems to be a good way of making it difficult to recover from a broken system disk. The RAID 1 arrar has a reiserfs file system for the simple reason that the system was upgraded from Suse 9.2 by replacing the system disk and then adding the RAID array from the original system. I have been scanning the literature to see how to build a RAID array by UUID, but can't seen to find anything on this. Looks like you have to know the device names before you can assemble a RAID array - so UUIDs don't help much here. -- Upgrade to 8.04 (Hardy) trashed RAID Array https://bugs.launchpad.net/bugs/224171 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 224171] Re: Upgrade to 8.04 (Hardy) trashed RAID Array
as I have known Linux, IDE disk devices have always been entirely predictable They can switch around due to cabling, BIOS and driver changes. You've encountered the last one... Looks like you have to know the device names before you can assemble a RAID array - so UUIDs don't help much here. Only if you are assembling the array by hand (e.g. a disk has been dropped). The final filesystem can be labelled like any partition (assuming the /dev/md? device was built). If md is working correctly it will be able to assembled the underlying partitions itself automatically (so it won't matter if you switch disks around etc). Old documentation won't talk about filesystem labelling or UUIDs (because it wasn't around) so take a look at the age of the documents. -- Upgrade to 8.04 (Hardy) trashed RAID Array https://bugs.launchpad.net/bugs/224171 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 224171] Re: Upgrade to 8.04 (Hardy) trashed RAID Array
The question becomes how did those hard disk IDs end up as /dev/hd* ? Did a tool automatically put them in? Ubuntu has defaulted (and switched during the upgrade to Edgy) device IDs to UUIDs (see https://help.ubuntu.com/community/UsingUUID ). Non label/UUID references can and will break and so should be avoided unless the user is willing (and able) to fix them up... -- Upgrade to 8.04 (Hardy) trashed RAID Array https://bugs.launchpad.net/bugs/224171 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 224171] Re: Upgrade to 8.04 (Hardy) trashed RAID Array
** Also affects: ubuntu-website Importance: Undecided Status: New ** Changed in: ubuntu-website Status: New = Confirmed -- Upgrade to 8.04 (Hardy) trashed RAID Array https://bugs.launchpad.net/bugs/224171 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 224171] Re: Upgrade to 8.04 (Hardy) trashed RAID Array
** Changed in: mdadm (Ubuntu) Sourcepackagename: None = mdadm -- Upgrade to 8.04 (Hardy) trashed RAID Array https://bugs.launchpad.net/bugs/224171 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
