From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hullen@t-online.de (Helmut Hullen) Subject: Re: kernel 3.3.4 damages filesystem (?) Date: 07 May 2012 14:15:00 +0200 Message-ID: References: <20120507105944.GD8938@carfax.org.uk> Reply-To: helmut@hullen.de Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII To: linux-btrfs@vger.kernel.org Return-path: In-Reply-To: <20120507105944.GD8938@carfax.org.uk> List-ID: Hallo, Hugo, Du meintest am 07.05.12: >> Yesterday I compiled kernel 3.3.4, and this morning I started the >> machine with this kernel. There may be some ugly problems. >> >> Copying something into the btrfs "directory" worked well for some >> files, and then I got error messages (I've not copied them, >> something with "IO error" under Samba). [...] >> Data, RAID0: total=5.29TB, used=4.29TB >> System, RAID1: total=8.00MB, used=352.00KB >> System: total=4.00MB, used=0.00 >> Metadata, RAID1: total=149.00GB, used=5.00GB >> >> Label: 'MMedia' uuid: 9adfdc84-0fbe-431b-bcb1-cabb6a915e91 >> Total devices 3 FS bytes used 4.29TB >> devid 3 size 2.73TB used 1.98TB path /dev/sdi1 >> devid 2 size 2.73TB used 1.94TB path /dev/sdf1 >> devid 1 size 1.82TB used 1.63TB path /dev/sdc1 >> >> Btrfs Btrfs v0.19 >> >> =================== boot messages, kernel related ============== >> >> [boot with kernel 3.3.4] >> May 7 06:55:26 Arktur kernel: ata5: exception Emask 0x10 SAct 0x0 >> SErr 0x10000 action 0xe frozen >> May 7 06:55:26 Arktur kernel: ata5: SError: { PHYRdyChg } >> May 7 06:55:26 Arktur kernel: ata5: hard resetting link > This is a hardware error. You have a device that's either dead or > dying. (Given the number of errors, probably already dead). It seems to be undecided which status it has ... >> Can I repair the system? Or have I to copy it to a set of other >> disks? > If you have RAID-1 or RAID-10 on both data and netadata, then you > _should_ in theory just be able to remove the dead disk (physically), > then btrfs dev add a new one, btrfs dev del missing, and balance. I haven't - I have a kind of copy/backup in the neighbourhood. Viele Gruesse! Helmut