Re: ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-30 Thread Theodore Ts'o
On Mon, Jun 30, 2014 at 08:46:44AM +0200, Pavel Machek wrote: > :-). Aha, and I misremembered, it was block descriptor checksums, not > inode checksums: > > One or more block group descriptor checksums are invalid. Fix? yes > > Group descriptor 0 checksum is invalid. FIXED. > Group descriptor

Re: ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-30 Thread Pavel Machek
On Sun 2014-06-29 17:04:28, Theodore Ts'o wrote: > On Sun, Jun 29, 2014 at 10:25:16PM +0200, Pavel Machek wrote: > > > > One more thing that I noticed: fsck notices bad checksum on inode, and > > then offers to fix the checksum with 'y' being the default. If there's > > trash in the inode, that

Re: ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-30 Thread Pavel Machek
On Sun 2014-06-29 17:04:28, Theodore Ts'o wrote: On Sun, Jun 29, 2014 at 10:25:16PM +0200, Pavel Machek wrote: One more thing that I noticed: fsck notices bad checksum on inode, and then offers to fix the checksum with 'y' being the default. If there's trash in the inode, that will just

Re: ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-30 Thread Theodore Ts'o
On Mon, Jun 30, 2014 at 08:46:44AM +0200, Pavel Machek wrote: :-). Aha, and I misremembered, it was block descriptor checksums, not inode checksums: One or more block group descriptor checksums are invalid. Fix? yes Group descriptor 0 checksum is invalid. FIXED. Group descriptor 1

Re: ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-29 Thread Theodore Ts'o
On Sun, Jun 29, 2014 at 10:25:16PM +0200, Pavel Machek wrote: > > One more thing that I noticed: fsck notices bad checksum on inode, and > then offers to fix the checksum with 'y' being the default. If there's > trash in the inode, that will just induce more errors. (Including > potentially

Re: ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-29 Thread Pavel Machek
Hi! > > It looks like the filesystem contains _way_ too many 0x's: > > That sounds like it's a hardware issue. It may be that the controller > did something insane while trying to do a write at the point when the > disk drive was disconnected (and so the drive suffered a power > drop).

Re: ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-29 Thread Pavel Machek
Hi! It looks like the filesystem contains _way_ too many 0x's: That sounds like it's a hardware issue. It may be that the controller did something insane while trying to do a write at the point when the disk drive was disconnected (and so the drive suffered a power drop).

Re: ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-29 Thread Theodore Ts'o
On Sun, Jun 29, 2014 at 10:25:16PM +0200, Pavel Machek wrote: One more thing that I noticed: fsck notices bad checksum on inode, and then offers to fix the checksum with 'y' being the default. If there's trash in the inode, that will just induce more errors. (Including potentially

Re: ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-27 Thread Oliver Neukum
On Thu, 2014-06-26 at 22:20 +0200, Pavel Machek wrote: > Hi! > > Ok, this ext4 filesystem does _not_ have easy life: it is in usb > envelope, I wanted > to use it as a root filesystem, and it is connected to OLPC-1.75, > running some kind > of linux-3.0 kernels. > > So power disconnects are

Re: ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-27 Thread Oliver Neukum
On Thu, 2014-06-26 at 22:20 +0200, Pavel Machek wrote: Hi! Ok, this ext4 filesystem does _not_ have easy life: it is in usb envelope, I wanted to use it as a root filesystem, and it is connected to OLPC-1.75, running some kind of linux-3.0 kernels. So power disconnects are common, and

Re: ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-26 Thread Theodore Ts'o
On Thu, Jun 26, 2014 at 10:50:49PM +0200, Pavel Machek wrote: > > And for every bug in kernel, there's one in fsck: I did not expect it, but > fsck actually > suceeded, and marked fs as clean. But second fsck had issues with > /lost+found... I'd need the previous fsck transcript to have any

Re: ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-26 Thread Theodore Ts'o
On Thu, Jun 26, 2014 at 10:30:52PM +0200, Pavel Machek wrote: > > It looks like the filesystem contains _way_ too many 0x's: That sounds like it's a hardware issue. It may be that the controller did something insane while trying to do a write at the point when the disk drive was

Re: ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-26 Thread Pavel Machek
On Thu 2014-06-26 22:30:52, Pavel Machek wrote: > Hi! > > > Ok, this ext4 filesystem does _not_ have easy life: it is in usb envelope, > > I wanted > > to use it as a root filesystem, and it is connected to OLPC-1.75, running > > some kind > > of linux-3.0 kernels. > > > > So power disconnects

Re: ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-26 Thread Pavel Machek
Hi! > Ok, this ext4 filesystem does _not_ have easy life: it is in usb envelope, I > wanted > to use it as a root filesystem, and it is connected to OLPC-1.75, running > some kind > of linux-3.0 kernels. > > So power disconnects are common, and even during regular reboot, I hear disk > doing

ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-26 Thread Pavel Machek
Hi! Ok, this ext4 filesystem does _not_ have easy life: it is in usb envelope, I wanted to use it as a root filesystem, and it is connected to OLPC-1.75, running some kind of linux-3.0 kernels. So power disconnects are common, and even during regular reboot, I hear disk doing emergency

ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-26 Thread Pavel Machek
Hi! Ok, this ext4 filesystem does _not_ have easy life: it is in usb envelope, I wanted to use it as a root filesystem, and it is connected to OLPC-1.75, running some kind of linux-3.0 kernels. So power disconnects are common, and even during regular reboot, I hear disk doing emergency

Re: ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-26 Thread Pavel Machek
Hi! Ok, this ext4 filesystem does _not_ have easy life: it is in usb envelope, I wanted to use it as a root filesystem, and it is connected to OLPC-1.75, running some kind of linux-3.0 kernels. So power disconnects are common, and even during regular reboot, I hear disk doing

Re: ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-26 Thread Pavel Machek
On Thu 2014-06-26 22:30:52, Pavel Machek wrote: Hi! Ok, this ext4 filesystem does _not_ have easy life: it is in usb envelope, I wanted to use it as a root filesystem, and it is connected to OLPC-1.75, running some kind of linux-3.0 kernels. So power disconnects are common, and

Re: ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-26 Thread Theodore Ts'o
On Thu, Jun 26, 2014 at 10:30:52PM +0200, Pavel Machek wrote: It looks like the filesystem contains _way_ too many 0x's: That sounds like it's a hardware issue. It may be that the controller did something insane while trying to do a write at the point when the disk drive was disconnected

Re: ext4: total breakdown on USB hdd, 3.0 kernel

2014-06-26 Thread Theodore Ts'o
On Thu, Jun 26, 2014 at 10:50:49PM +0200, Pavel Machek wrote: And for every bug in kernel, there's one in fsck: I did not expect it, but fsck actually suceeded, and marked fs as clean. But second fsck had issues with /lost+found... I'd need the previous fsck transcript to have any idea