Please do a "ps -ef" before umount to see if the unmount is hung.
--Mark.
On 05/02/14 10:07, Eric Sandeen wrote:
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On 5/2/14, 8:47 AM, Martin Papik wrote:
I ran into a problem using XFS. The USB device on which I have an XFS
file system got disconnected and xfs_repair and xfs_check fail with a
message saying the file system is mounted writable. There is no entry
in /etc/mtab or /proc/mounts. However I see messages in the kernel log
(dmesg) about write failures to the disconnected drive.
platform_check_iswritable() and platform_check_ismounted() in xfsprogs check
these things.
platform_check_ismounted() does a ustat() of the block device,
"ustat() returns information about a mounted file system"
and it knows if it's mounted or not,
"EINVAL: dev does not refer to a device containing a mounted file system."
so something, somewhere thinks it's mounted. Check /proc/mounts?
Please let me know what I can do short of zeroing the log, which I
believe would result in some data loss.
Hate to say it, but a reboot may be simplest. Zeroing the log won't
help. OTOH, if you lost USB connectivity, you already lost some data.
- -Eric
Martin
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