been away, back now...
Tejun Heo wrote:
David Greaves wrote:
Tejun Heo wrote:
How reproducible is the problem? Does the problem go away or occur more
often if you change the drive you write the memory image to?
I don't think there should be activity on the sda drive during resume
itself.
[I broke my / md mirror and am using some of that for swap/resume for now]
I did change the swap/resume device to sdd2 (different controller,
onboard sata_via) and there was no EH during resume. The system seemed
OK, wrote a few Gb of video and did a kernel compile.
I repeated this test, no EH during resume, no problems.
I even ran xfs_fsr, the defragment utility, to stress the fs.
I retain this configuration and try again tonight but it looks like
there _may_ be a link between EH during resume and my problems...
Having retained this new configuration for a couple of days now I haven't had
any problems.
This is good but not really ideal since / isn't mirrored anymore :(
Of course, I don't understand why it *should* EH during resume, it
doesn't during boot or normal operation...
EH occurs during boot, suspend and resume all the time. It just runs in
quiet mode to avoid disturbing the users too much. In your case, EH is
kicking in due to actual exception conditions so it's being verbose to
give clue about what's going on.
I was trying to say that I don't actually see any errors being handled in normal
operation.
I'm not sure if you are saying that these PHY RDY events are normally handled
quietly (which would explain it).
It's really weird tho. The PHY RDY status changed events are coming
from the device which is NOT used while resuming
yes - but the erroring device which is not being used is on the same controller
as the device with the in-use resume partition.
and it's before any
actual PM events are triggered. Your kernel just boots, swsusp realizes
it's resuming and tries to read memory image from the swap device.
yes
While reading, the disk controller raises consecutive PHY readiness
changed interrupts. EH recovers them alright but the end result seems
to indicate that the loaded image is corrupt.
Yes, that's consistent with what I'm seeing.
When I move the swap/resume partition to a different controller (ie when I broke
the / mirror and used the freed space) the problem seems to go away.
I am seeing messages in dmesg though:
ATA: abnormal status 0xD0 on port 0xf881e0c7
ATA: abnormal status 0xD0 on port 0xf881e0c7
ATA: abnormal status 0xD0 on port 0xf881e0c7
ATA: abnormal status 0xD0 on port 0xf881e0c7
ATA: abnormal status 0xD0 on port 0xf881e0c7
ata1.00: configured for UDMA/100
ata2.00: revalidation failed (errno=-2)
ata2: failed to recover some devices, retrying in 5 secs
sd 0:0:0:0: [sda] 390721968 512-byte hardware sectors (200050 MB)
sd 0:0:0:0: resuming
sd 0:0:0:0: [sda] Starting disk
ATA: abnormal status 0x7F on port 0x00019807
ATA: abnormal status 0x7F on port 0x00019007
ATA: abnormal status 0x7F on port 0x00019007
ATA: abnormal status 0x7F on port 0x00019807
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
ATA: abnormal status 0xD0 on port 0xf881e0c7
ATA: abnormal status 0xD0 on port 0xf881e0c7
ATA: abnormal status 0xD0 on port 0xf881e0c7
ATA: abnormal status 0xD0 on port 0xf881e0c7
ATA: abnormal status 0xD0 on port 0xf881e0c7
ata1.00: configured for UDMA/100
ata2.00: revalidation failed (errno=-2)
ata2: failed to recover some devices, retrying in 5 secs
So, there's no device suspend/resume code involved at all. The kernel
just booted and is trying to read data from the drive. Please try with
only the first drive attached and see what happens.
That's kinda hard; swap and root are on different drives...
Does it help that although the errors above appear, the system seems OK when I
just use the other controller?
I have to be cautious what I do with this machine as it's the wife's active
desktop box <grin>.
David
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
