Hi , I actually have a QNAP NAS in my house. [admin@NASXXXXX /]# cat /etc/issue Welcome to TS-431(192.168.1.XXX), QNAP Systems, Inc. <<<<< As you can see this is an old version device and out of date. It has 3 1T disks RAID5 on it but only 2disks work now, I bought a new one, still waiting for the shipment. The web UI still working on my side, even I reboot it for times. I think the most important thing for now is to copy your important data out. I think you could find your data path via "df -h" Here is my output: [admin@NASXXXXX bin]# df -h Filesystem Size Used Available Use% Mounted on ... ... ... /dev/mapper/cachedev1 1.8T 1.2T 548.1G 70% /share/CACHEDEV1_DATA ... ... ... Go to /dev/mapper/cachedev1 directory and then use "scp <your important files> root@other_ip_address_in_your_LAN:/path/to/directory" You could use cat /proc/disks to check if other disks here. [admin@NASXXXXX /]# cat /proc/diskstats # I like to use "lsblk" but it doesn't have it. ... ... ... # As you could see that it only has sda and sdb there: sdc is pluged in the NAS ,but it's not here, it means it doesn't workout now. 43 14 nbd14 0 0 0 0 0 0 0 0 0 0 0 43 15 nbd15 0 0 0 0 0 0 0 0 0 0 0 8 0 sda 2666861 242260046 1982460610 47733070 164771 1228360 10752008 15960880 0 15367000 63725850 8 1 sda1 47492 10036 3846782 3169370 49715 76658 840503 2781750 0 4585920 5950920 8 2 sda2 2699 3160 46772 471070 17555 21902 264929 583500 0 756970 1054680 8 3 sda3 2446860 242235903 1972738628 40493400 77962 792166 6842863 10862250 0 9402270 115057530 8 4 sda4 169688 10947 5827481 3598940 19288 337634 2803664 1730950 0 1990760 5329690 8 5 sda5 112 0 867 290 14 0 49 210 0 500 500 8 16 sdb 2691840 242249364 1980699749 51394800 166919 1228269 10768808 16194030 0 15714940 67632830 8 17 sdb1 46538 2740 2857410 4336940 49658 76714 840487 2817990 0 4794540 7154720 8 18 sdb2 2735 3549 50410 353200 17690 21768 264929 598910 0 740140 952170 8 19 sdb3 2443821 242238229 1972683584 42970960 80052 792134 6859679 11226530 0 9529510 54241740 8 20 sdb4 198631 4846 5107279 3733440 19268 337653 2803664 1548260 0 1968070 5281580 8 21 sdb5 105 0 986 190 14 0 49 200 0 390 390 31 0 mtdblock0 20 0 160 4450 0 0 0 0 0 4450 4450 31 1 mtdblock1 169 0 1352 19230 0 0 0 0 0 19070 19220 ... ... ... Why it happended ? I actually don't know, you know hard disks are consumable. About one year ago the same NAS (I made a 4 1T-disks RAID5 on it that time) 's 4th slot doesn't workout suddenly and it cause the 4th disk broken. I contacted QNAP , they asked me to send the whole NAS (without disks) to them to test, I did, the result is the chip which has 4 SATA ports and connected to disks is broken (actually the 4th SATA port on that chip is broken ). I have to buy a new one from QNAP cause my device is out of date. But when I got my NAS back with new chip on it, plugin a new disk into the 4th port, it still can't be detected, So I spend about 20 hours to move my data out , and re-create my 4-disks RAID5 into 3-disks RAID5 on it. and then copy my data into that 3-disks RAID5 QNAP NAS. How can I recover from this? 1.Copy out your important data first (use scp as I mentioned.) 2.Check if the disks are still there (cat /proc/diskstats), if the disks are ther, you may need to reinstall the NAS OS on your device. if not you got broken disks. 3.Contact QNAP, or , Buy new disks build new RAID copy data back. On Thu, Jul 8, 2021 at 6:07 PM Nicolas Martin <nicolas.martin.3d@xxxxxxxxx> wrote: > > Hi, > > For a bit of context :I had a RAID5 with 4 disks running on a QNAP NAS. > One disk started failing, so I ordered a replacement disk, but in the mean time the NAS became irresponsive and I had to reboot it. > Now the NAS does not (really) come back alive, and I can only log onto it with ssh. > > When I run cat /proc/mdstatus, this is what I get : > Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath] > md322 : active raid1 sdd5[3](S) sdc5[2](S) sdb5[1] sda5[0] > 7235136 blocks super 1.0 [2/2] [UU] > bitmap: 0/1 pages [0KB], 65536KB chunk > > md256 : active raid1 sdd2[3](S) sdc2[2](S) sdb2[1] sda2[0] > 530112 blocks super 1.0 [2/2] [UU] > bitmap: 0/1 pages [0KB], 65536KB chunk > > md13 : active raid1 sdc4[24] sda4[1] sdb4[0] sdd4[25] > 458880 blocks super 1.0 [24/4] [UUUU____________________] > bitmap: 1/1 pages [4KB], 65536KB chunk > > md9 : active raid1 sdb1[0] sdd1[25] sdc1[24] sda1[26] > 530048 blocks super 1.0 [24/4] [UUUU____________________] > bitmap: 1/1 pages [4KB], 65536KB chunk > > unused devices: <none> > > So, I don’t know how this could happen ? I looked up on the FAQ, but I can’t seem to see what could explain this, nor how I can recover from this ? > > Any help appreciated. > > Thanks > -- Fine Fan Kernel Storage QE ffan@xxxxxxxxxx T: 8388117 M: (+86)-15901470329
