New answers tagged raid
This is a warning based on information provided by the kernel. Misalignment mostly has performance impacts; on SSDs it may result in additional wear. It won't cause corruption! Software RAID 10 + LVM on mixed drives, sector alignment? has lots of useful information on this, including recipes to set things up correctly.
Your existing RAID arrays (all three of them) are mirrors (RAID1). You can add more disks to them, but that just adds more copies—so you need to create additional arrays. (You hopefully already know this, but your question was to add to the existing RAID.) If your NAS has some interface to use (e.g., a web interface) you may want to use that. If you manage ...
I had to boot a LiveISO then edit the grub.conf, I wasn't exaclty sure it would work, but I just uncommented an already existing line that specified the boot drive. [root@localhost ~]# cat /boot/grub/grub.conf # grub.conf generated by anaconda # # Note that you do not have to rerun grub after making changes to this file # NOTICE: You have a /boot ...
Have a look at the boot order through your raid controller bios. Seems like it tries to boot from the other LV (i.e. your 1TB array).
Judging from mdadm-3.4 source code, it does not accept any other inputs. As for the near=2,far=1 output, that's the default and nothing changed but values =1 are simply no longer printed because that essentially means "no additional copy" (counting starts at 1). In case both near and far equal 1, it prints NO REDUNDANCY. However you're not actually able to ...
Yes, as soon as you have filled up the systems buffers, your program will start to wait for the writes to complete to the slower disc. If that were not the case, the RAID software would essentially have to dynamically degrade the array and then sync in the background. In your case (!) I would upgrade the USB 2.0 external drive to a USB 3.0 enclosure.
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