* It is a good idea to backup whatever you can, before you do anything else.
* Once you have that out of the way, try
$btrfs scrub start /dev/sda3
* I personally haven't used btrfs much, but I believe it may be better to
$btrfs check --repair /dev/sda3
before you do the fsck as Kim suggested.
On Wed, Jan 15, 2020 at 12:16 PM Kim Oldfield via luv-main <
To run a file system check on sda3 boot from a rescue disk an run:
fsck -n /dev/sda3
This will tell you the problems with the filesystem on the partition
If the data on sda3 is critical to you, or there is major corruption, then
you should backup the raw partition before trying to repair.
To repair the partition run:
And answer "y" when asked to fix each problem.
On 15/1/20 11:54 am, Andrew Greig via luv-main wrote:
Thank you for your response. I have had a look at those links, and they
are quite a bit "over my head", so I wonder if I should use the rescue disk
to facilitate shifting my ~/working directory to my RAID disks. (Nothing
else is of any consequence) and then use a Ubuntu 18.10 DVD to upgrade the
distribution and hopefully create a new GRUB on (in old terms) /dev/sda3
On 15/1/20 9:57 am, Manoj C Menon wrote:
From the logs it looks like your sda3 partition (btrfs) is corrupt.
Perhaps you could boot from a rescue CD/flash drive and try some of the
suggestions on these pages?
On Wed, Jan 15, 2020 at 12:17 AM Andrew Greig via luv-main <
I have discovered a Ubuntu Boot-Repair -Disc which avoids syntax issues,
I was unable to come up with a satisfactory syntax for the commands
needed to solve this problem. Suitably chastened I have located a laptop
which has Thunderbird so now I can keep the thread on the list. My
attempts to communicate from a tablet produced a pile of crap.
I downloaded and burned a Disk-Repair-Disk for Ubuntu
I have run the recommended steps to repair GRUB 2.8, but nothing has
I did request the log be sent to a paste bin just in case, and as it is
a few pages of text here is the link.
The last line acknowledges the failure to achieve a result.
This machine is critical to my work, and I had considerable assistance
earlier in 2019 to achieve a RAID system on this machine, for which I am
I would appreciate any assistance with this problem.
luv-main mailing list
luv-main mailing list