(CCing linux-ide)
On 01/18/2011 04:14 PM, Dmitry wrote:
On Tue, 18 Jan 2011 22:46:34 +0100, John Tyree<johntyree@xxxxxxxxx> wrote:
[1.] Disk continually remounts and hardlocks the entire system if running on
battery.
[2.] When I unplug the power cord from laptop, the harddrive immediately
stops spinning and nothing happens for up to ten seconds or more. During
this
time, absolutely nothing works except the mouse moving around in X.
Applications do not redraw their guis, Can't launch anything or close
anything. Just have to wait until it remounts and I hear the drive spin up.
At that time, everything snaps back to life as if nothing has happened.
dmesg shows the following:
oh, just look at ata errors, definitely this is not fs's problem,
it's looks like your disk is dieing, Your options:
1) plug/unplug sata cable :), in my experience this is the root of cause
in 50% of cases.
2) smart ctl logs
[28687.441335] ata1.00: configured for UDMA/33
[28687.441345] ata1: EH complete
[28687.443153] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled,
doesn't support DPO or FUA
[28688.563053] EXT4-fs (sda5): re-mounted. Opts: commit=600
[28688.570501] EXT4-fs (dm-0): re-mounted. Opts: commit=600
[28727.760100] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x110000 action
0x6 frozen
[28727.760115] ata1: SError: { PHYRdyChg Dispar }
[28727.760126] ata1.00: failed command: WRITE DMA EXT
[28727.760144] ata1.00: cmd 35/00:08:5d:8b:e1/00:00:17:00:00/e0 tag 0 dma
4096 out
[28727.760148] res 40/00:f4:00:00:00/00:00:00:00:00/40 Emask 0x4
(timeout)
[28727.760156] ata1.00: status: { DRDY }
[28727.760170] ata1: hard resetting link
[28728.066096] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
[28728.067819] ata1.00: configured for UDMA/33
[28728.068309] ata1.00: device reported invalid CHS sector 0
[28728.068337] ata1: EH complete
[28730.395512] ata1.00: configured for UDMA/33
[28730.395520] ata1: EH complete
[28730.430938] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled,
doesn't support DPO or FUA
[28730.953631] EXT4-fs (sda5): re-mounted. Opts: commit=0
[28730.958914] EXT4-fs (dm-0): re-mounted. Opts: commit=0
This happens everytime the power is unplugged and continutes to happen, with
the harddrive spinning up and working for about 10 seconds before it happens
again. When the power is plugged back in, everything goes right back to
normal. This started with vanilla 2.6.37 from linus's git. I thought it
might
have something to do with laptop-mode, but disabling it did not change
anything.
Hmm, it seems like there's some kind of glitch happening on the SATA
link. In this case it looks like PHY ready change event(s) happened. I
would tend to suspect this being some kind of hardware problem. Are you
sure this doesn't occur on older kernels?
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