Hi,all I posted this on the megaraid devel list thinking it was a megaraid problem..But maybe it's LVM doing tricks..Here goes: I've had problems with a volume group not showing up after a reboot.. After booting up the volume group on the megaraid is not detected.Running vgcfgrestore on the individual disks the volume group can bring it back...That is until I run a vgscan resulting in this output: vgscan -- reading all physical volumes (this may take a while...) vgscan -- found active volume group "vg0" vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created vgscan -- WARNING: This program does not do a VGDA backup of your volume group SCSI disk error : host 2 channel 2 id 0 lun 0 return code = 25040001 I/O error: dev 08:21, sector 0 SCSI disk error : host 2 channel 2 id 0 lun 0 return code = 25040001 I/O error: dev 08:21, sector 2 SCSI disk error : host 2 channel 2 id 0 lun 0 return code = 25040001 I/O error: dev 08:21, sector 4 SCSI disk error : host 2 channel 2 id 0 lun 0 return code = 25040001 I/O error: dev 08:21, sector 6 SCSI disk error : host 2 channel 2 id 0 lun 0 return code = 25040001 I/O error: dev 08:21, sector 0 SCSI disk error : host 2 channel 2 id 0 lun 0 return code = 25040001 I/O error: dev 08:21, sector 2 SCSI disk error : host 2 channel 2 id 0 lun 0 return code = 25040001 I/O error: dev 08:21, sector 4 SCSI disk error : host 2 channel 2 id 0 lun 0 return code = 25040001 I/O error: dev 08:21, sector 6 SCSI disk error : host 2 channel 2 id 0 lun 0 return code = 25040001 I/O error: dev 08:21, sector 0 SCSI disk error : host 2 channel 2 id 0 lun 0 return code = 25040001 I/O error: dev 08:21, sector 2 SCSI disk error : host 2 channel 2 id 0 lun 0 return code = 25040001 I/O error: dev 08:21, sector 4 SCSI disk error : host 2 channel 2 id 0 lun 0 return code = 25040001 I/O error: dev 08:21, sector 6 SCSI disk error : host 2 channel 2 id 0 lun 0 return code = 25040001 I/O error: dev 08:21, sector 0 SCSI disk error : host 2 channel 2 id 0 lun 0 return code = 25040001 I/O error: dev 08:21, sector 2 SCSI disk error : host 2 channel 2 id 0 lun 0 return code = 25040001 I/O error: dev 08:21, sector 4 SCSI disk error : host 2 channel 2 id 0 lun 0 return code = 25040001 I/O error: dev 08:21, sector 6 these errors appear on the console after running it along with a lot of: invalidate: busy buffer invalidate: busy buffer invalidate: busy buffer invalidate: busy buffer invalidate: busy buffer invalidate: busy buffer invalidate: busy buffer invalidate: busy buffer invalidate: busy buffer invalidate: busy buffer invalidate: busy buffer invalidate: busy buffer and the volume group vg1 is completely gone..It can be brought up again like this: vgcfgrestore -v -n vg1 /dev/sdb1 vgcfgrestore -v -n vg1 /dev/sdc vgchange -ay and then it's OK until vgscan is run... setup: Poweredge 2550 Megaraid (2 adapters)..from dmesg: megaraid: v1.18 (Release Date: Thu Oct 11 15:02:53 EDT 2001 )<5>megaraid: found 0x101e:0x1960:idx 0:bus 2:slot 0:func 0 scsi1 : Found a MegaRAID controller at 0xf8805000, IRQ: 20 scsi1 : Enabling 64 bit support megaraid: [161N:3.17] detected 1 logical drives megaraid: channel[1] is raid. megaraid: channel[2] is raid. megaraid: found 0x101e:0x1960:idx 1:bus 4:slot 0:func 0 scsi2 : Found a MegaRAID controller at 0xf8807000, IRQ: 18 scsi2 : Enabling 64 bit support megaraid: [161N:3.17] detected 1 logical drives megaraid: channel[1] is raid. megaraid: channel[2] is raid. scsi1 : LSI Logic MegaRAID 161N 254 commands 16 targs 5 chans 7 luns scsi2 : LSI Logic MegaRAID 161N 254 commands 16 targs 5 chans 7 luns running Debian 2.2 with kernel 2.4.17 lvm version 1.0.1 Anyone know what's going on with this ?? It's our main server so it's not possible to boot very often..That's why I'd like to investigate all possible options before trying to debug further.. best regards Christian -- Christian Ejstrup, IT Admin / RF Development Engineer Texas Instruments A/S, Denmark ,Sofiendalsvej 93,DK-9200 Aalborg SV,Denmark Phone:+45 96346868, Phone(direct):+45 96346860, GSM:+45 22234304 _______________________________________________ linux-lvm mailing list linux-lvm@sistina.com http://lists.sistina.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html
