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If it were my system, I'd test the disks with vendor tools in a windows PC (seatools for seagate, lifeguard for western digital). Replace any that fail (or which have more than 50 reallocated+pending sectors).
Then do a factory reset with all disks in place. Reconfigure the NAS and restore the data from the backup.
login: root
Password:
# start_raids -v
Found new array data-0 [c4b4e8c3:c42179a2:fed11c6a:c2a4af1]
Found new array 1 [6830d0fa:a6ede353:6e4678e:be7d83]
Found new array 0 [f2fc4dc:133c8eb9:4f907524:fdab7081]
Checking array 0
uuid: f2fc4dc:133c8eb9:4f907524:fdab7081
hostid: 33ea412f
raid_disks: 6
ctime: 1497865502
layout: 0
size: 8380416
chunk_size: 4247053
Checking array 1
uuid: 6830d0fa:a6ede353:6e4678e:be7d83
hostid: 33ea412f
raid_disks: 6
ctime: 1497865503
layout: 2
size: 1047424
chunk_size: 4247605
Checking array data-0
uuid: c4b4e8c3:c42179a2:fed11c6a:c2a4af1
hostid: 33ea412f
raid_disks: 6
ctime: 1497865529
layout: 2
size: 3897329664
chunk_size: 4247677
Setting array data-0 to run
Run: /sbin/mdadm -A -R -f --auto=md /dev/md/0 /dev/sdf1 /dev/sde1 /dev/sdd1 /dev
/sdc1 /dev/sdb1 /dev/sda1
mdadm: /dev/md/0 has been started with 6 drives.
Run: /sbin/mdadm -A -R -f --auto=md /dev/md/1 /dev/sdf2 /dev/sde2 /dev/sdd2 /dev
/sdc2 /dev/sdb2 /dev/sda2
mdadm: /dev/md/1 has been started with 6 drives.
Run: /sbin/mdadm -A -R -f --auto=md /dev/md/data-0 /dev/sdf3 /dev/sde3 /dev/sdd3
/dev/sdc3 /dev/sdb3 /dev/sda3
mdadm: /dev/md/data-0 has been started with 6 drives.
Found 0 fstab name matches, and 0 fstab mountpt matches
mount: mounting LABEL=33ea412f:data on /data failed: No such file or directory
/bin/sh: /sbin/btrfs: not found
# btrfs check --repair /dev/md0
enabling repair mode
repair mode will force to clear out log tree, Are you sure? [y/N]: y
Checking filesystem on /dev/md0
UUID: ba959f04-d0d7-4cf6-9c3b-56b945f4599c
checking extents
ref mismatch on [1003638784 8192] extent item 1, found 0
attempting to repair backref discrepency for bytenr 1003638784
Ref doesn't match the record start and is compressed, please take a btrfs-image
of this file system and send it to a btrfs developer so they can complete this f
unctionality for bytenr 434857640905023360
failed to repair damaged filesystem, aborting
# btrfs filesystem show /dev/md0
Label: '33ea412f:root' uuid: ba959f04-d0d7-4cf6-9c3b-56b945f4599c
Total devices 1 FS bytes used 944.80MiB
devid 1 size 4.00GiB used 1.64GiB path /dev/md0
# mount /dev/md0 /sysroot
segmentation fault
# btrfs filesystem show /dev/md127
Label: '33ea412f:data' uuid: 436f1a9d-4eff-4db1-8b1a-c4da4f4230e6
Total devices 1 FS bytes used 4.80TiB
devid 1 size 9.07TiB used 5.46TiB path /dev/md127
# mount /dev/md127 /mnt/
# ls -la /mnt
drwxrwxrwx 1 222 Oct 4 17:38 .
drwxr-xr-x 20 460 Dec 4 14:09 ..
drwxrwxrwx 1 158 Oct 4 17:38 ._share
drwxrwxr-x 1 230 Dec 4 12:57 .apps
drwxrwxrwx 1 0 Jul 9 13:06 .purge
drwxr-xr-x 1 0 Jun 19 09:56 .timemachine
drwxrwxrwx 1 0 Jun 19 09:45 .vault
drwxrwxrwx 1 1006 Jul 10 19:46 camfc
drwxrwxrwx 1 1006 Jul 10 19:41 camfr
drwxr-xr-x 1 12 Jun 19 09:45 home
drwxrwxrwx 1 106 Jul 17 14:20 rsyslog
drwxrwxrwx 1 9434 Nov 28 20:24 ??????????
drwxrwxrwx 1 78 Oct 2 10:27 ???????????
drwxrwxrwx 1 660 Jul 20 19:20 ??????
as far as i understand 4gb roos FS internal flash is broken (my NAS have about 6 years uptime). is it true? how to solve this problem? is it possible to boot from flash in USB port and use it for root FS?
by the way, sometimes, my NAS starting ok, but frozen in 1-2mins. it is impossible to do something when NAS starts ok.
TNX for answers!
Model: ReadyNAS RNDP600E|ReadyNAS Pro Pioneeer Chassis only
as far as i understand 4gb roos FS internal flash is broken (my NAS have about 6 years uptime). is it true?
I don't think your flash is damaged - if it were, you'd likely have failed to boot into tech support mode. It's more likely that the OS partition on the disks is damaged (along with the data volume's file system). /dev/md0 is the OS partition on the disks.
You can test this by installing a scratch disk in the NAS by itself, and attempt to do a factory reset from the boot menu. If that works, then problem is with the disks, not the flash.
I do a backup, of course. and... and what's next? my disks have 4-6 years uptime... I have to buy new disks?
and why system corrupt so heavy? volume was RAID5. Upon failure of a single drive, subsequent reads can be calculated from the distributed parity such that no data is lost.
If it were my system, I'd test the disks with vendor tools in a windows PC (seatools for seagate, lifeguard for western digital). Replace any that fail (or which have more than 50 reallocated+pending sectors).
Then do a factory reset with all disks in place. Reconfigure the NAS and restore the data from the backup.
