The scan hangs like this: /dev/md0: Inode 255856286 has compression flag set on filesystem without compression support. of course after the "adding extra swap" ceremony, because it quickly throws a "memory allocation error" otherwise: swapoff /dev/md8 I tried various e2fsck_64 (even e2fsck_64_qnap) command combinations like: e2fsck_64 -f /dev/md0
Superblock is persistent as well: # mdadm -detail /dev/md0 Md9 : active raid1 sda1 sdc1 sdh1 sdg1 sdf1 sde1 sdd1 sdb1 Md13 : active raid1 sda4 sdc4 sdh4 sdg4 sdf4 sde4 sdd4 sdb4 Md0 : active raid5 sda3 sdg3 sdf3 sde3 sdd3 sdh3 sdb3ġ7572185216 blocks super 1.0 level 5, 64k chunk, algorithm 2 I checked and the RAID is active for md0: # cat /proc/mdstat EXT4-fs (md0): ext4_check_descriptors: Checksum for group 0 failed (50238!=44925) md0: detected capacity change from 0 to 17993917661184 raid5: raid level 5 set md0 active with 7 out of 7 devices, algorithm 2 raid5: device sdb3 operational as raid disk 1 raid5: device sdh3 operational as raid disk 2 raid5: device sdd3 operational as raid disk 3 raid5: device sde3 operational as raid disk 4 raid5: device sdf3 operational as raid disk 5 raid5: device sdg3 operational as raid disk 6 Here is a longer dmesg output from device startup: raid5: device sda3 operational as raid disk 0 EXT4-fs (md0): group descriptors corrupted! This mounting attempt's reflection on dmesg: EXT4-fs (md0): ext4_check_descriptors: Checksum for group 0 failed (50238!=44925) Wrong fs type, bad option, bad superblock on /dev/md0, missing codepage or other error Then I tried to mount that volume manually via SSH and this is the output: # mount /dev/md0 /share/MD0_DATA -t ext4 They all say "GOOD" for SMART information. I started "Bad Blocks Scan" for all drives and they all completed successfully. But we never had the chance again because the device rebooted itself and the RAID5 logical volume became "Unmounted", so it wasn't possible to start a filesystem check from the GUI anymore since the "CHECK NOW" button became inactive. But we decided to do this after work-hours not to cause any inconvenience to the users. That RAID5 logical volume was still mounted and we had the chance to start a filesystem check from the QNAP Web GUI. It is suggested that you run "check disk". My intention is to recover as much data as possible.Īfter a power failure, there was this log message: It has Intel(R) Atom(TM) CPU D525 1.80GHz processor and 1GB RAM, 8 of 3TB (Seagate ST33000651AS CC44) drives and they form a 7 drive RAID5 array. Please note that the volume will be unmounted, and therefore not accessible, during the file system check.We got this QNAP TS-859U+ with firmware version 3.8.1 Build 20121205 at our datacenter. Select the volume and click on “ Manage ” to open the volume management windowĬlick on “ Actions ” > “ Check File System ”. Go to Storage & Snapshots > Storage > Storage/Snapshot
#Qnap check file system volume could not be unmounted how to
How to check the file system of a volume: In those cases, it is recommended to check the File System, in order to fix the eventual errors. If the NAS experienced an unexpected shutdown, or other abnormal behavior, the file system of the volume may get some errors. “I received a notification saying that the “File System is not clean” and it is recommended to run a File System Check. Support Milestone Surveillance Platform.NAS Smart Surveillance System Solutions.NDR Solutions against Targeted Ransomware.Software-defined Platform Total Solution.Support Platform9’s Managed OpenStack Solution.Veeam-Ready and Virtualization Certifications.With Linux and ZFS, QuTS hero supports advanced data reduction technologies for further driving down costs and increasing reliablility of SSD (all-flash) storage. QuTS hero is the operating system for high-end and enterprise QNAP NAS models. WIth Linux and ext4, QTS enables reliable storage for everyone with versatile value-added features and apps, such as snapshots, Plex media servers, and easy access of your personal cloud. QTS is the operating system for entry- and mid-level QNAP NAS.
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