Re: fsck with "err is 1"
Hallo, Jan, Du meintest am 23.11.11: >> One big problem of btrfs seems to be: you can't see on which >> partition/ disk the defect sector (or something else) may be > A recent kernel (3.2, still rc) will tell you the byte number when an > error occurs, and also give the the opportunity to resolve this > address to all files affected. May be. I had used the brand new kernel 3.1. btrfs may be fine when it works as proposed. It's still under heavy construction. I had to rebuild my 4-TByte archive the second time within 1 year - that's no reliable system. May be the situation for really big bundles of disk gets better when something like raid 5 does work. I'll wait. Viele Gruesse! Helmut -- 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
Re: fsck with "err is 1"
On 23.11.2011 18:32, Helmut Hullen wrote: > One big problem of btrfs seems to be: you can't see on which partition/ > disk the defect sector (or something else) may be A recent kernel (3.2, still rc) will tell you the byte number when an error occurs, and also give the the opportunity to resolve this address to all files affected. -Jan -- 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
Re: fsck with "err is 1"
Hallo, Blair, Du meintest am 23.11.11: >> I can't answer that, but I can tell you that fsck for btrfs right >> now is almost useless. It can't fix anyting. > Thank you, I've read that fsck doesn't fix anything. I was curious > if doing the scrub would resolve it. I had tried ... about 4 Tbyte data have gone. 3 disks bundled with data=raid0, metadata=raid1. One disk had problems, before I run "scrub" I could read most files, Running "scrub": all had gone. One big problem of btrfs seems to be: you can't see on which partition/ disk the defect sector (or something else) may be, if there is 1 error in 1 partition you have to restore the complete bundle of disks/ partitions. Yes - I know: btrfs is still under construction. In my special case: the 4 TByte are a kind of video archive. No "valuable" data, only "nice to have". And old people still know the behaviour of old 35 mm film and/or VHS cassettes: they have errors. But these errors don't damage the whole archive. Viele Gruesse! Helmut -- 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
Re: fsck with "err is 1"
On Nov 22, 2011, at 10:02 PM, Fajar A. Nugraha wrote: > On Wed, Nov 23, 2011 at 12:33 PM, Blair Zajac wrote: >> Hello, >> >> I'm trying btrfs in a VirtualBox VM running Ubuntu 11.10 with kernel 3.0.0. >> Running fsck I get a message with "err is 1". > >> Does this mean there's an error? Is err either always 0 or 1, or does err >> increment beyond 1? > > I can't answer that, but I can tell you that fsck for btrfs right now > is almost useless. It can't fix anyting. Thank you, I've read that fsck doesn't fix anything. I was curious if doing the scrub would resolve it. Blair -- 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
Re: fsck with "err is 1"
On Wed, Nov 23, 2011 at 12:33 PM, Blair Zajac wrote: > Hello, > > I'm trying btrfs in a VirtualBox VM running Ubuntu 11.10 with kernel 3.0.0. > Running fsck I get a message with "err is 1". > Does this mean there's an error? Is err either always 0 or 1, or does err > increment beyond 1? I can't answer that, but I can tell you that fsck for btrfs right now is almost useless. It can't fix anyting. Short summary, if you can mount the fs, and can access the data, and don't have any weird messages on syslog, then it's most likely OK. -- Fajar -- 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
fsck with "err is 1"
Hello, I'm trying btrfs in a VirtualBox VM running Ubuntu 11.10 with kernel 3.0.0. Running fsck I get a message with "err is 1". root@ubuntu-11-10-i386:/# fsck -v -v / fsck from util-linux 2.19.1 root 257 inode 878 errors 400 found 6938783744 bytes used err is 1 total csum bytes: 6281436 total tree bytes: 501153792 total fs tree bytes: 465928192 btree space waste bytes: 134778274 file data blocks allocated: 12274962432 referenced 6405234688 Btrfs Btrfs v0.19 Does this mean there's an error? Is err either always 0 or 1, or does err increment beyond 1? I've tried doing the following to fix the filesystem, but "err is 1" doesn't change. - btrfs filesystem balance / - find / -mount -type f -print0 | xargs -0 cat >/dev/null The later shows no errors in dmesg. Thanks, Blair -- 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
