In the BIOS of an ASUS DSEB-DG/SAS Intel 5400 Serverboard, I have IDE set to RAID, and before grub I see the controller reporting the two 80GB SAS drives function as mirrored drives for /boot and an LVM drive that will contain root (/) and swap. During installation of RHEL 5.2 from DVD I select default configuration, and it gets installed to /dev/mapper/VolGroup00-LogVol00. On reboot, first thing after grub, I get the "duplicate PV" error described in http://kbase.redhat.com/faq/FAQ_96_11252.shtm This means the mirrored drive doesn't actually mirror, so when I install a new kernel, it gets installed to one of the two mirrored drives. On reboot, the system may stop at grub> or see only the old kernel. Booting into Knoppix and recreating the LVM that contains the OS shows a pristine OS, untouched by my updates. The mirrored boot partitions are both labeled /boot, but only one of them gets mounted. RH support says to change the fstab to /dev/sdb1, but that would seem to defeat the whole purpose of a mirrored drive. Having booted, I get this on vgscan (verbose below): #cache/lvmcache.c:799 Found duplicate PV vcFZMnN4VZzcpn2e24xXVq6EDVvQHLbi: using /dev/sdc2 not /dev/sdb2 I attempted to create a filter, but don't have a /dev/mpath -- suggestions? This basically renders the system either unupgradable or unbootable, pick your poison. Dave oot@roma:~# l /dev/mapper total 0 crw------- 1 root root 10, 63 Jul 17 01:03 control brw-rw---- 1 root disk 253, 0 Jul 17 01:03 VolGroup00-LogVol00 brw-rw---- 1 root disk 253, 1 Jul 17 01:03 VolGroup00-LogVol01 root@roma:~# l /dev/VolGroup00 total 0 lrwxrwxrwx 1 root root 31 Jul 17 01:03 LogVol00 -> /dev/mapper/VolGroup00-LogVol00 lrwxrwxrwx 1 root root 31 Jul 17 01:03 LogVol01 -> /dev/mapper/VolGroup00-LogVol01 vgscan -vvvv and grep /dev/sd: #device/dev-io.c:445 Opened /dev/sdb1 RW O_DIRECT #device/dev-io.c:134 /dev/sdb1: block size is 1024 bytes #label/label.c:185 /dev/sdb1: No label detected #device/dev-io.c:491 Closed /dev/sdb1 #device/dev-io.c:445 Opened /dev/sdb2 RO #device/dev-io.c:264 /dev/sdb2: size is 156071475 sectors #device/dev-io.c:491 Closed /dev/sdb2 #device/dev-io.c:264 /dev/sdb2: size is 156071475 sectors #device/dev-io.c:445 Opened /dev/sdb2 RW O_DIRECT #device/dev-io.c:134 /dev/sdb2: block size is 512 bytes #device/dev-io.c:491 Closed /dev/sdb2 #filters/filter-composite.c:31 Using /dev/sdb2 #device/dev-io.c:445 Opened /dev/sdb2 RW O_DIRECT #device/dev-io.c:134 /dev/sdb2: block size is 512 bytes #label/label.c:162 /dev/sdb2: lvm2 label detected #cache/lvmcache.c:655 lvmcache: /dev/sdb2: now orphaned #format_text/format-text.c:1132 /dev/sdb2: Found metadata at 6656 size 1177 (in area at 4096 size 192512) for VolGroup00 (QFpntF-bLLR-O7OJ-dSkU-H4PV-eeLk-bHvPcu) #cache/lvmcache.c:655 lvmcache: /dev/sdb2: now in VG VolGroup00 #cache/lvmcache.c:468 lvmcache: /dev/sdb2: setting VolGroup00 VGID to QFpntFbLLRO7OJdSkUH4PVeeLkbHvPcu #cache/lvmcache.c:690 lvmcache: /dev/sdb2: VG VolGroup00: Set creation host to localhost.localdomain. #device/dev-io.c:491 Closed /dev/sdb2 #device/dev-io.c:445 Opened /dev/sdc RO #device/dev-io.c:264 /dev/sdc: size is 156301488 sectors #device/dev-io.c:344 WARNING: /dev/sdc already opened read-only #device/dev-io.c:521 /dev/sdc: Immediate close attempt while still referenced #device/dev-io.c:491 Closed /dev/sdc #device/dev-io.c:445 Opened /dev/sdc RW O_DIRECT #device/dev-io.c:134 /dev/sdc: block size is 4096 bytes #filters/filter.c:123 /dev/sdc: Skipping: Partition table signature found #device/dev-io.c:491 Closed /dev/sdc #device/dev-io.c:445 Opened /dev/sdc1 RO #device/dev-io.c:264 /dev/sdc1: size is 208782 sectors #device/dev-io.c:491 Closed /dev/sdc1 #device/dev-io.c:264 /dev/sdc1: size is 208782 sectors #device/dev-io.c:445 Opened /dev/sdc1 RW O_DIRECT #device/dev-io.c:134 /dev/sdc1: block size is 1024 bytes #device/dev-io.c:491 Closed /dev/sdc1 #filters/filter-composite.c:31 Using /dev/sdc1 #device/dev-io.c:445 Opened /dev/sdc1 RW O_DIRECT #device/dev-io.c:134 /dev/sdc1: block size is 1024 bytes #label/label.c:185 /dev/sdc1: No label detected #device/dev-io.c:491 Closed /dev/sdc1 #device/dev-io.c:445 Opened /dev/sdc2 RO #device/dev-io.c:264 /dev/sdc2: size is 156071475 sectors #device/dev-io.c:491 Closed /dev/sdc2 #device/dev-io.c:264 /dev/sdc2: size is 156071475 sectors #device/dev-io.c:445 Opened /dev/sdc2 RW O_DIRECT #device/dev-io.c:134 /dev/sdc2: block size is 512 bytes #device/dev-io.c:491 Closed /dev/sdc2 #filters/filter-composite.c:31 Using /dev/sdc2 #device/dev-io.c:445 Opened /dev/sdc2 RW O_DIRECT #device/dev-io.c:134 /dev/sdc2: block size is 512 bytes #label/label.c:162 /dev/sdc2: lvm2 label detected #cache/lvmcache.c:799 Found duplicate PV vcFZMnN4VZzcpn2e24xXVq6EDVvQHLbi: using /dev/sdc2 not /dev/sdb2 #format_text/format-text.c:1132 /dev/sdc2: Found metadata at 6656 size 1177 (in area at 4096 size 192512) for VolGroup00 (QFpntF-bLLR-O7OJ-dSkU-H4PV-eeLk-bHvPcu) #device/dev-io.c:491 Closed /dev/sdc2 #device/dev-io.c:445 Opened /dev/sdc2 RW O_DIRECT #device/dev-io.c:134 /dev/sdc2: block size is 512 bytes #label/label.c:162 /dev/sdc2: lvm2 label detected #format_text/format-text.c:1132 /dev/sdc2: Found metadata at 6656 size 1177 (in area at 4096 size 192512) for VolGroup00 (QFpntF-bLLR-O7OJ-dSkU-H4PV-eeLk-bHvPcu) #label/label.c:162 /dev/sdc2: lvm2 label detected #format_text/format-text.c:1132 /dev/sdc2: Found metadata at 6656 size 1177 (in area at 4096 size 192512) for VolGroup00 (QFpntF-bLLR-O7OJ-dSkU-H4PV-eeLk-bHvPcu) #format_text/format-text.c:493 Read VolGroup00 metadata (3) from /dev/sdc2 at 6656 size 1177 #metadata/pv_manip.c:284 /dev/sdc2 0: 0 2319: LogVol00(0:0) #metadata/pv_manip.c:284 /dev/sdc2 1: 2319 62: LogVol01(0:0) #device/dev-io.c:491 Closed /dev/sdc2 _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
