On 26/11/2010, at 11:37 PM, Voytek Eymont wrote: > I have a QNAP NAS with 4 disks as a single "Striping Disk Volume: Drive 1 > 2 3 4 EXT4" > > couple of days ago, power failed, according to QNAP log, system was > shutdown by UPS notification > > when I powered it up, I tried to do 'checkdisk' using web i/face, but, it > keeps failing with: > > 23:23:37 System [Strip Disk Volume: Drive 1 2 3 4] Start examination. > 23:32:16 System [Strip Disk Volume: Drive 1 2 3 4] Examination failed. > > what sort of test can I try from console to rectify ?
What file system is it? If it's of the ext2/3/4 family then QNAP may ship the user space tools in /sbin to do a logical check of the file system (ie, /sbin/mkfs.ext2 etc). Beyond that the device's mdadm output suggests the drives are all ok physically. FWIW, if your data is either not worth squat, or you can rapidly recover it (from backup, or other sources) then never use RAID0. Use RAID5 and accept a slight performance hit and the obligatory "n-1" storage capacity. We have a number of QNAP boxes running around the office (usually for cheap iSCSI storage) and we always run either RAID5 or RAID6 (we'd run RAID0+1/1+0 but QNAP don't support it...yet!). Good luck. James-- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
