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ReadyNAS Ultra-6 data degraded after firmware update
I have an old ReadyNAS Ultra-6 that I upgraded to Firmware 6.9.5. After the upgrade it shows data degraded. However the data is not degraded, all drives are healthy, I can still access the shares...
Hi again
Thanks for posting the disk info. As suspected, disk sda has seen better days. From what I can see in the logs, the disk should be located in bay 1 (the first disk in the NAS). We can see that the disk has some Current Pending Sector errors.
Device: sda Controller: 0 Channel: 0 <<<=== Bay 1 Model: WDC WD60EFRX-68MYMN0 Serial: Firmware: 82.00A82 Class: SATA RPM: 5700 Sectors: 11721045168 Pool: data PoolType: RAID 5 PoolState: 3 PoolHostId: 33eac74a Health data ATA Error Count: 0 Reallocated Sectors: 0 Reallocation Events: 0 Spin Retry Count: 0 Current Pending Sector Count: 11 <<<=== Bad sectors on the disk Uncorrectable Sector Count: 0 Temperature: 32 Start/Stop Count: 136 Power-On Hours: 35247 Power Cycle Count: 77 Load Cycle Count: 15929
Pending sectors typically indicates imminent failure of the disk. An Acronis KB, describes the issue particularly well.Current Pending Sector Count S.M.A.R.T. parameter is a critical parameter and indicates the current count of unstable sectors (waiting for remapping). The raw value of this attribute indicates the total number of sectors waiting for remapping. Later, when some of these sectors are read successfully, the value is decreased. If errors still occur when reading some sector, the hard drive will try to restore the data, transfer it to the reserved disk area (spare area) and mark this sector as remapped.
Please also consult your machines's or hard disks documentation.
RecommendationsThis is a critical parameter. Degradation of this parameter may indicate imminent drive failure. Urgent data backup and hardware replacement is recommended.
https://kb.acronis.com/content/9133
It is quite likely that these bad sectors caused the NAS to kick the disk from the one of the data raids. The fact that those sectors appear stuck in "pending" is an indication that the sectors will probably never recover. Without further examination of the logs I'd say you need to replace that disk asap. Note: you must replace with a disk of same size or larger.
Your other disks appear to be healthy, which is good!
Cheers
Since you say you "swapped out" the 6TB drives, I'm assuming the other bays stll have the 2TBs. So, yes, you'll have two RAID groups. One 6x2TB and one 3x4TB. Only a factory default will change that (but there is normally no need to do so). "Degraded" means "no redundancy", not "no access", so it's likely true. Since you have no full backup, you need to fix that before you lose another drive and the volume does become "dead". Unfortunately, fixing it could put your other drives at higher risk if a resync is needed (which I think it will). So fixing the no backup issue should also be on your short list.
It is odd that all drives show green if the volume is degraded, unless it is currently re-syncing. Hopchen should be able to tell you more from the log, but if you hover over the green dot, do all drives say they are part of volume "data"?
It was all 2tb drives then I swapped in 6tb drives one at a time so now it has 3x6tb and 3x2rb.
Yeah I did more reading and saw that multiple raid groups is result of raid-x expansion.
All drives are green, all listed as part of 'data'. On the unit LCD display where it says degraded all the drive bays are shown and flashing, whether this means they are failed or just populated I don't know.
I will post logs etc when I get home.
Yeah I did more reading and saw that multiple raid groups is result of raid-x expansion.
All drives are green, all listed as part of 'data'. On the unit LCD display where it says degraded all the drive bays are shown and flashing, whether this means they are failed or just populated I don't know.
I will post logs etc when I get home.
- Also, the issue only started at the reboot after flashing to 6.9.5, so would be uncanny timing if it was just a failed drive....
Was gonna post logs, but cant attach zips, can't rename to png or other and attach, cant post the the raw txt as message character limit is 2000chars... i give up for now.
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