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Forum Discussion
ReadyNAS Ultra 2: how to recover data from RAID-1 disks?
Hello,
- I have a ReadyNas -> Netgear RNDU2120-100PES (check image below).
- It has a "blue light" - but the network port NIC seems totally dead. Not link at all. So my guess unit works w...
Hello Again,
- I know ran the commands:
# mdadm --assemble --scan
# vgscan
# vgchange -a y
# mount /dev/c/c /mnt
But cant seem to mount the drive- error "unknown filesystem type 'linux_raid_member".
Note i have one of the two disks - connected to the PC.
Look at images below:
Hello,
- Cant mount it > it says "is already mounted" ?
- Check attached image.
- Also tried to create a new folder /mnt/recovery - and mount it here instead of /mnt/sdb3 but no luck - seems something is preventing me from accessing this.
- Can you help me remotely? (ssh access)
Hello,
- Also this information is from dmesg:
[ 362.460636] md: md0 stopped.
[ 362.461213] md: bind<sdb1>
[ 362.469600] md: raid1 personality registered for level 1
[ 362.469881] md/raid1:md0: active with 1 out of 2 mirrors
[ 362.469904] md0: detected capacity change from 0 to 4293906432
[ 362.476292] md0: unknown partition table
[ 362.661170] md: bind<sdb2>
[ 362.662166] md/raid1:md1: active with 1 out of 2 mirrors
[ 362.662191] md1: detected capacity change from 0 to 536858624
[ 362.662521] md1: unknown partition table
[ 362.727698] md: bind<sdb3>
[ 362.818110] raid6: sse2x1 6145 MB/s
[ 362.886093] raid6: sse2x2 9477 MB/s
[ 362.954076] raid6: sse2x4 12507 MB/s
[ 362.954078] raid6: using algorithm sse2x4 (12507 MB/s)
[ 362.954080] raid6: using ssse3x2 recovery algorithm
[ 362.971233] async_tx: api initialized (async)
[ 362.971591] xor: automatically using best checksumming function:
[ 363.010060] avx : 25118.000 MB/sec
[ 363.329026] md: raid6 personality registered for level 6
[ 363.329028] md: raid5 personality registered for level 5
[ 363.329029] md: raid4 personality registered for level 4
[ 363.329260] md/raid:md2: device sdb3 operational as raid disk 0
[ 363.329411] md/raid:md2: allocated 0kB
[ 363.329423] md/raid:md2: raid level 5 active with 1 out of 2 devices, algorithm 2
[ 363.329424] RAID conf printout:
[ 363.329425] --- level:5 rd:2 wd:1
[ 363.329426] disk 0, o:1, dev:sdb3
[ 363.329452] md2: detected capacity change from 0 to 1995563728896
[ 363.329794] md2: unknown partition table
[ 586.406417] device-mapper: uevent: version 1.0.3
[ 586.406482] device-mapper: ioctl: 4.27.0-ioctl (2013-10-30) initialised: dm-devel@redhat.com
[ 6740.573943] EXT4-fs (md1): VFS: Can't find ext4 filesystemWhy are you trying to mount a partition from a disk? You're entering the wrong command
To mount the root volume you would mount /dev/md0
To mount the data volume you would mount /dev/c/cHello,
- Just dont get where the drive is mounted.
- The /dev/md0 > i can mount and looks ok - but no files here.
- The /dev/c/c does not exist? cant mount it - what am i doing wrong here.
- Want to mount the disk were the files are so i can restore them to remote destination.
Thanks for all help,
Best regards,
Johan
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