Any other suggestions?
On Mon, Jul 15, 2013 at 6:56 AM, Dave Barnum <d...@thebarnums.com> wrote: > Thanks Wang, > > This was the result: > root@ubuntu:/downloads/btrfs-progs# ./btrfs chunk-recover /dev/sdc2 > no recoverable chunk > Recover the chunk tree successfully. > > Still unable to mount. > > On Sun, Jul 14, 2013 at 2:03 PM, Wang Shilong <wangshilong1...@gmail.com> > wrote: >> Hello, >> >> You call pull from: >> git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-progs.git >> >> Miao implement chunk tree recover function, you can try it with like. >> btrfs chunk-recover /dev >> Maybe this can help you. >> >> Thanks, >> Wang >>> I need some help as may have lost some number of files on a btrfs raid >>> 1 volume. I'm not quite sure what happend which, I know, only adds to >>> the problem. >>> >>> On my computer #1 I had only a month or so ago installed Fedora 19 >>> Beta and at the time of install chose BTRFS, raid 1. Recently one of >>> the drives started complaining that it was going to die. WIthout >>> taking it out of the array (perhaps I should have done that) I turned >>> off the system and swapped the drive with another. From then on I lost >>> my ability to boot the system. I could not get anything to work with >>> the new hard drive. Then I put the old hard drive back in so that I >>> could try to boot again. Still nothing. At one point I think I was >>> able to see grub - but at this point, I'm not. I just get boot disk >>> failure. >>> >>> Further more on the failing drive, drive A, I can still see the >>> patitions but I cannot mount it on another system. On drive B (the >>> other half of the mirror) I do not see any partitions. I tried copying >>> the partition structure using sfdisk from A to B but that probably was >>> not smart. >>> >>> I plugged drive A into computer #2 using a live Fedora and Ubuntu CD >>> to try to mount the volume. However in both distributions I am unable >>> to mount the volume. I've tried mounting using -o degraded but I still >>> get the same error. The error I'm seeing when I try to mount the >>> filesystem goes like this: >>> >>> Quote: >>> [10792.307425] device label fedora_ison devid 2 transid 48720 /dev/sdc2 >>> [10792.308202] btrfs: allowing degraded mounts >>> [10792.308206] btrfs: disk space caching is enabled >>> [10792.308599] btrfs: failed to read chunk root on sdc2 >>> [10792.308799] btrfs warning page private not zero on page 20979712 >>> [10792.320146] btrfs: open_ctree failed >>> >>> I believe the superblock may be in tact since when i turn the command >>> ./btrfs-show-super /dev/sdc2 I get: >>> >>> Quote: >>> root@ubuntu:/downloads/btrfs-progs# ./btrfs-show-super /dev/sdc2 >>> superblock: bytenr=65536, device=/dev/sdc2 >>> --------------------------------------------------------- >>> csum 0xfc19c468 [match] >>> bytenr 65536 >>> flags 0x1 >>> magic _BHRfS_M [match] >>> fsid cbbf7d4c-f7a0-43ff-aed5-77b347d6ff25 >>> label fedora_ison >>> generation 48720 >>> root 1105526784 >>> sys_array_size 226 >>> chunk_root_generation 46504 >>> root_level 1 >>> chunk_root 20979712 >>> chunk_root_level 1 >>> log_root 0 >>> log_root_transid 0 >>> log_root_level 0 >>> total_bytes 2988521291776 >>> bytes_used 598216536064 >>> sectorsize 4096 >>> nodesize 4096 >>> leafsize 4096 >>> stripesize 4096 >>> root_dir 6 >>> num_devices 2 >>> compat_flags 0x0 >>> compat_ro_flags 0x0 >>> incompat_flags 0x1 >>> csum_type 0 >>> csum_size 4 >>> cache_generation 48720 >>> dev_item.uuid 5f61edaa-7f12-4ec5-a024-02f7797e1400 >>> dev_item.fsid cbbf7d4c-f7a0-43ff-aed5-77b347d6ff25 [match] >>> dev_item.type 0 >>> dev_item.total_bytes 1494260645888 >>> dev_item.bytes_used 482110078976 >>> dev_item.io_align 4096 >>> dev_item.io_width 4096 >>> dev_item.sector_size 4096 >>> dev_item.devid 2 >>> dev_item.dev_group 0 >>> dev_item.seek_speed 0 >>> dev_item.bandwidth 0 >>> dev_item.generation 0 >>> >>> Could someone help me troubleshoot why I can't mount my volume? I >>> would REALLY appreciate it! Perhaps there is a way to repair my broken >>> tree structure? >>> >>> Thank You! >>> -- >>> To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in >>> the body of a message to majord...@vger.kernel.org >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >> -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
