Still trying to get the array back up. Status: Clean, degraded with 9 out of 10 disks. One disk - removed as non-fresh. as a result two of LVs could not be mounted: mount: wrong fs type, bad option, bad superblock on /dev/mapper/vg0-lv1, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so mount: wrong fs type, bad option, bad superblock on /dev/mapper/vg0-lv2, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so [ 3357.006833] JBD: no valid journal superblock found [ 3357.006837] EXT4-fs (dm-1): error loading journal [ 3357.022603] JBD: no valid journal superblock found [ 3357.022606] EXT4-fs (dm-2): error loading journal Apparently there is a problem with re-adding non-fresh disk back to the array. #mdadm -a -v /dev/md0 /dev/sdf mdadm: /dev/sdf reports being an active member for /dev/md0, but a --re-add fails. mdadm: not performing --add as that would convert /dev/sdf in to a spare. mdadm: To make this a spare, use "mdadm --zero-superblock /dev/sdf" first. Question: Is there a way to resync the array using that non-fresh disk, as it may contain blocks needed by these LVs. At this stage I don't really want to add this disk as a spare. Any suggestions please? thanks On Tue, Sep 13, 2011 at 8:44 PM, Andriano <chief000@xxxxxxxxx> wrote: > Thanks everyone, looks like the problem is solved. > > For benefit of others who may experience same issue, here is what I've done: > > - upgraded firmware on ST32000542AS disks - from CC34 to CC35. It must > be done using onboard SATA in Native IDE (not RAID/AHCI) mode. > After reconnecting them back to HBA, size of one of the offenders fixed itself! > > - ran hdparm -N p3907029168 /dev/sdx command on other two disks and it > worked (probably it works straight after reboot) > Now mdadm -D shows the array as clean, degraded with one disk kicked > out, which is another story :) > > now need to resync array and restore two LVs which hasn't mounted :( > > On Tue, Sep 13, 2011 at 8:29 PM, Roman Mamedov <rm@xxxxxxxxxx> wrote: >> On Tue, 13 Sep 2011 19:05:41 +1000 >> Andriano <chief000@xxxxxxxxx> wrote: >> >>> Connected one of the offenders to HBA port, and hdparm outputs this: >>> >>> #hdparm -N /dev/sdh >>> >>> /dev/sdh: >>> max sectors = 3907027055/14715056(18446744073321613488?), HPA >>> setting seems invalid (buggy kernel device driver?) >> >> You could just try "hdparm -N p3907029168" (capacity of the 'larger' disks), but that could fail if the device driver is indeed buggy. >> >> Another possible course of action would be to try that on some other controller. >> For example on your motherboard you have two violet ports, http://www.gigabyte.ru/products/upload/products/1470/100a.jpg >> those are managed by the JMicron JMB363 controller, try plugging the disks which need HPA to be removed to those ports, AFAIR that JMicron controller works with "hdparm -N" just fine. >> >> -- >> With respect, >> Roman >> > -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html