[Bug 46129] ext3 remounted readonly after resume from STR

[Michel D'HOOGE]

Public bug reported:

Binary package hint: linux-source-2.6.15

Since kernel 2.6.15-21, when resuming from ACPI suspend to RAM, some
times the ext3 driver detects a problem and remount the (root) partition
readonly. I have a dell laptop (inspiron 630m) and STR worked with
kernel 2.6.15-20 (not so nicely, but it worked).

I put below the 'most noticeable' differences between both kernel when
trying to resume from STR:

Linux version 2.6.15-20-686 (buildd at vernadsky) (gcc version 4.0.3
(Ubuntu 4.0.3-1ubuntu3)) #1 SMP PREEMPT Tue Apr 4 18:37:00 UTC 2006

ATA: abnormal status 0x80 on port 0x1F7
last message repeated 2 times
kernel: [4333595.770000] ata1: slow completion (cmd ef)
kernel: [4333595.770000] ata1: dev 0 configured for UDMA/100
kernel: [4333596.101000] ata2: dev 0 configured for UDMA/33

The only annoying thing with this kernel is the delay (5-10s) that
occurs 'randomly' when resuming.


Linux version 2.6.15-22-686 (buildd at vernadsky) (gcc version 4.0.3 (Ubuntu 4.0.3-1ubuntu5)) #1 SMP PREEMPT Sun May 7 16:37:57 UTC 2006

1st STR (cmd: powersave -u)
Msg on vt1:
eth1: NETDEV_TX_BUSY returned; driver should report queue full via ieee_device->is_queue_full.

2nd STR (also with powersave -u)
3rd-5th STR using kpowersave GUI
=> ok, no messages

After several hours of work, I have such messages on vt1:
end_request: I/O error, dev sda, sector 54423482
(repeated several times with different sectors #)
Aborting journal on device sda3
ext3_abort_called
EXT3-fs error (device sda3): ext3 journal _start_sb: Detected aborted journal
Remounting filesystem readonly

I suspected the network, the AC power supply, the USB mouse to be the
cause of the problem but yesterday I had the same problem with kernel
2.6.15-23 even though I booted without AC, network and mouse (I was in
the train).

I tried both with powersave and sleep.sh from acpi-support with the same
result.

** Affects: linux-source-2.6.15 (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

-- 
ext3 remounted readonly after resume from STR
https://launchpad.net/bugs/46129