Here is the relevant section of strace:
---------------------------------------------------------------------------------------------
chmod("/etc/grub.d/05_debian_theme.dpkg-new", 0755) = 0
unlink("/etc/grub.d/05_debian_theme.dpkg-new") = 0
stat("/etc/localtime", {st_mode=S_IFREG|0644, st_size=2819, ...}) = 0
write(6, "2011-05-05 13:21:57 status unpac"..., 56) = 56
write(4, "Package: grub-pc\nStatus: install"..., 1795) = 1795
ftruncate(4, 1795) = 0
fsync(4) = 0
close(4) = 0
munmap(0x7f32f8490000, 4096) = 0
rename("/var/lib/dpkg/updates/tmp.i", "/var/lib/dpkg/updates/0011") = 0
open("/var/lib/dpkg/updates/", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 4
fsync(4) = 0
close(4) = 0
open("/var/lib/dpkg/updates/tmp.i", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 4
fcntl(4, F_GETFD) = 0
fcntl(4, F_SETFD, FD_CLOEXEC) = 0
fstat(4, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f32f8490000
write(4, "#padding\n#padding\n#padding\n#padd"..., 4096) = 4096
write(4, "padding\n#padding\n#padding\n#paddi"..., 512) = 512
lseek(4, 0, SEEK_SET) = 0
stat("/etc/localtime", {st_mode=S_IFREG|0644, st_size=2819, ...}) = 0
write(6, "2011-05-05 13:21:58 status half-"..., 63) = 63
write(4, "Package: grub-pc\nStatus: install"..., 1802) = 1802
ftruncate(4, 1802) = 0
fsync(4) = 0
close(4) = 0
munmap(0x7f32f8490000, 4096) = 0
rename("/var/lib/dpkg/updates/tmp.i", "/var/lib/dpkg/updates/0012") = 0
open("/var/lib/dpkg/updates/", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 4
fsync(4) = 0
close(4) = 0
open("/var/lib/dpkg/updates/tmp.i", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 4
fcntl(4, F_GETFD) = 0
fcntl(4, F_SETFD, FD_CLOEXEC) = 0
fstat(4, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f32f8490000
write(4, "#padding\n#padding\n#padding\n#padd"..., 4096) = 4096
write(4, "padding\n#padding\n#padding\n#paddi"..., 512) = 512
lseek(4, 0, SEEK_SET) = 0
stat("/var/lib/dpkg/info/grub-pc.postinst", {st_mode=S_IFREG|0755,
st_size=23003, ...}) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
child_tidptr=0x7f32f8475a70) = 29950
rt_sigaction(SIGQUIT, {SIG_IGN, [], SA_RESTORER, 0x7f32f7d281e0}, {SIG_DFL, [],
SA_RESTORER, 0x7f32f7d281e0}, 8) = 0
rt_sigaction(SIGINT, {SIG_IGN, [], SA_RESTORER, 0x7f32f7d281e0}, {SIG_DFL, [],
SA_RESTORER, 0x7f32f7d281e0}, 8) = 0
wait4(29950, grub-probe: error: cannot stat `/dev/root'.
^C <unfinished ...>
---------------------------------------------------------------------------------------------/var/lib/dpkg/info/grub-pc.postinst is attached. I can't make sense of it. BTW, I fixed the 'no space left on device' on the other machine with a btrfs balance. No one seems to know this, but even though df reports that 64% of the disk array is used, apparently one of the disks did get full somehow and was preventing even a simple mkdir. But a balance fixed it. I thought balancing was supposed to be automatic in BTRFS? Is defrag not automatic? On Thursday 5 May, 2011 12:55:44 you wrote: > Excerpts from CACook's message of 2011-05-05 15:50:02 -0400: > > > > I was afraid of this finger-pointing. > > We're not finger pointing, but we also don't maintain the script that is > failing. I'm happy to patch up bugs in the FS (or point you to newer > kernels that have them fixed) but at this point we don't have enough > info to say if it is an FS problem or a debian package problem. > > Perhaps if you ran it under strace? > > Other distros don't have problems with btrfs on /, so somehow this is > specific to debian's setup. > > -chris > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >
grub-pc.postinst
Description: application/shellscript
