> Hi, > > One of my disks, partitioned into a single btrfs partition, is showing > media errors. The problem is that these errors lead to kernel panic from > btrfs - that make the filesystem unusable until reboot - and therefore > it is very hard for me to do a full backup of the data prior to changing > the disk. > My current kernel is 3.2.0-8-generic from Ubuntu/precise (based on linux > 3.2-final) but I quickly tested and get the same error with an older 3.1 > kernel (and I can probably reproduce it with a vanilla kernel if > necessary). > I assume that the filesystem should not panic even in case of a media > error... Is there any procedure I can follow / patch I could apply to > salvage my data while ignoring media errors ? I don't know about btrfs, but writing the sector with hdparm --write-sector will usually cause it to be remapped. You can use dd or another tool to read the entire disk to find out if there are more bad sectors. Niels -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
