Maybe you could try double checking if the md0 device is actually an LVM volume with pvscan / vgscan. The vgscan manual page reports you might need to run it explicitly after changing hardware, I've never had to, but try running `vgscan --mknodes`?
On Fri, Jan 29, 2010 at 12:23 PM, Mike A. <[email protected]> wrote: > I believe it's not detected.. running lvscan gives me this: > > ACTIVE '/dev/VolGroup00/LogVol00' [27.44 GB] inherit > ACTIVE '/dev/VolGroup00/LogVol01' [3.94 GB] inherit > > On Fri, Jan 29, 2010 at 12:21 PM, Mark David Dumlao <[email protected]> > wrote: >> Try an `lvscan` to see if your logical volume is detected. Then mount >> the appropriate /dev/mapper/... device instead of the bare /dev/md0. >> >> On Fri, Jan 29, 2010 at 12:17 PM, Mike A. <[email protected]> wrote: >>> I believed it's in LVM >>> >>> >>> On Fri, Jan 29, 2010 at 12:15 PM, Mark David Dumlao <[email protected]> >>> wrote: >>>> You moved it from an old server to a new one. By any chance, did you >>>> use xfs, jfs, or some nonstandard filesystem on your old server? >>>> Perhaps you don't have the appropriate xfs/jfs tools installed on your >>>> new one just yet. Or perhaps you used LVM before? >>>> >>>> On Fri, Jan 29, 2010 at 11:59 AM, Mike A. <[email protected]> wrote: >>>>> Hi, >>>>> >>>>> I installed a new CentOS server and added 4 hard disk which is >>>>> configured as RAID0. These hard disk came from an old server and just >>>>> wanted to restore the data that's store in it. >>>>> >>>>> In DMESG, it says that the RAID was detected and it was configured. (see >>>>> below) >>>>> >>>>> md: Autodetecting RAID arrays. >>>>> md: autorun ... >>>>> md: considering sdd1 ... >>>>> md: adding sdd1 ... >>>>> md: adding sdc1 ... >>>>> md: adding sdb1 ... >>>>> md: adding sda1 ... >>>>> md: created md0 >>>>> md: bind<sda1> >>>>> md: bind<sdb1> >>>>> md: bind<sdc1> >>>>> md: bind<sdd1> >>>>> md: running: <sdd1><sdc1><sdb1><sda1> >>>>> md: raid0 personality registered for level 0 >>>>> md0: setting max_sectors to 512, segment boundary to 131071 >>>>> raid0: looking at sdd1 >>>>> raid0: comparing sdd1(976759808) with sdd1(976759808) >>>>> raid0: END >>>>> raid0: ==> UNIQUE >>>>> raid0: 1 zones >>>>> raid0: looking at sdc1 >>>>> raid0: comparing sdc1(976759808) with sdd1(976759808) >>>>> raid0: EQUAL >>>>> raid0: looking at sdb1 >>>>> raid0: comparing sdb1(976759808) with sdd1(976759808) >>>>> raid0: EQUAL >>>>> raid0: looking at sda1 >>>>> raid0: comparing sda1(976759808) with sdd1(976759808) >>>>> raid0: EQUAL >>>>> raid0: FINAL 1 zones >>>>> raid0: done. >>>>> raid0 : md_size is 3907039232 blocks. >>>>> raid0 : conf->hash_spacing is 3907039232 blocks. >>>>> raid0 : nb_zone is 1. >>>>> raid0 : Allocating 4 bytes for hash. >>>>> md: ... autorun DONE. >>>>> >>>>> However, whenever I mount /dev/md0 to a folder, it gives me this error: >>>>> >>>>> mount: wrong fs type, bad option, bad superblock on /dev/md0, >>>>> missing codepage or other error >>>>> In some cases useful info is found in syslog - try >>>>> dmesg | tail or so >>>>> >>>>> What do you think is the problem? How can I mount /dev/md0 so I can >>>>> restore it's data? >>>>> >>>>> Please help. >>>>> >>>>> Thanks! >>>>> _________________________________________________ >>>>> Philippine Linux Users' Group (PLUG) Mailing List >>>>> http://lists.linux.org.ph/mailman/listinfo/plug >>>>> Searchable Archives: http://archives.free.net.ph >>>>> >>>> >>>> >>>> >>>> -- >>>> This email is: [ ] actionable [ ] fyi [ ] social >>>> Response needed: [ ] yes [ ] up to you [ ] no >>>> Time-sensitive: [ ] immediate [ ] soon [ ] none >>>> _________________________________________________ >>>> Philippine Linux Users' Group (PLUG) Mailing List >>>> http://lists.linux.org.ph/mailman/listinfo/plug >>>> Searchable Archives: http://archives.free.net.ph >>>> >>> _________________________________________________ >>> Philippine Linux Users' Group (PLUG) Mailing List >>> http://lists.linux.org.ph/mailman/listinfo/plug >>> Searchable Archives: http://archives.free.net.ph >>> >> >> >> >> -- >> This email is: [ ] actionable [ ] fyi [ ] social >> Response needed: [ ] yes [ ] up to you [ ] no >> Time-sensitive: [ ] immediate [ ] soon [ ] none >> _________________________________________________ >> Philippine Linux Users' Group (PLUG) Mailing List >> http://lists.linux.org.ph/mailman/listinfo/plug >> Searchable Archives: http://archives.free.net.ph >> > _________________________________________________ > Philippine Linux Users' Group (PLUG) Mailing List > http://lists.linux.org.ph/mailman/listinfo/plug > Searchable Archives: http://archives.free.net.ph > -- This email is: [ ] actionable [ ] fyi [ ] social Response needed: [ ] yes [ ] up to you [ ] no Time-sensitive: [ ] immediate [ ] soon [ ] none _________________________________________________ Philippine Linux Users' Group (PLUG) Mailing List http://lists.linux.org.ph/mailman/listinfo/plug Searchable Archives: http://archives.free.net.ph
