-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 12/29/12 4:51 PM, Sergei Trofimovich wrote: > On Sat, 29 Dec 2012 14:20:29 -0600 > Eric Sandeen <sandeen@xxxxxxxxxxx> wrote: > >>> Panic showed all my drives and partitions which means >>> they were detected correctly. > >> Was it a panic, or was it simply a very verbose message which contained a backtrace? > >> Can you please include what you actually saw in your logs? > > Yes, it was a panic. Box did not boot (i would not bisect it otherwise). > I won't have access to real box thus I've reproduced it in minimal > UML: > > Current usermode linux perfectly reproduces the problem as well: > > $ cat ./run_ubda_fails > #!/bin/sh > > ./vmlinux \ > ubd0=$(pwd)/1G.img \ > root=/dev/ubda \ > rw \ > mem=256M \ > umid=foo \ > \ > "$@" > reset > > $ cat ./run_ubda > #!/bin/sh > > ./vmlinux \ > ubd0=$(pwd)/1G.img \ > root=/dev/ubda \ > rw rootfstype=btrfs \ > mem=256M \ > umid=foo \ > \ > "$@" > reset > > Note the rootfstype in the workign case. I've included only EXT4=y XFS=y and BTRFS=y > as supported FSen. The UML OOps: > > [ 0.170000] VFS: Cannot open root device "ubda" or unknown-block(98,0): error -117 Oh, ok, so it was panicing due to inability to mount root; not xfs itself panicing. Were there any messages from xfs prior to this? Especially if there were none, this might fix it, though TBH it's just a quick guess, I haven't really looked at how the probing works at boot time recently. Can you test it? From: Eric Sandeen <sandeen@xxxxxxxxxx> Do not return EFSCORRUPTED when filesystem probe finds no XFS magic 9802182 changed the return value from EWRONGFS (aka EINVAL) to EFSCORRUPTED which doesn't seem to be handled properly by the root filesystem probe. Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx> - --- diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index da50846..7d6df7c 100644 - --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -658,7 +658,7 @@ xfs_sb_quiet_read_verify( return; } /* quietly fail */ - - xfs_buf_ioerror(bp, EFSCORRUPTED); + xfs_buf_ioerror(bp, EWRONGFS); } static void > [ 0.170000] Please append a correct "root=" boot option; here are the available partitions: > [ 0.170000] 6200 1048576 ubda driver: uml-blkdev > [ 0.170000] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(98,0) > [ 0.170000] Call Trace: > [ 0.170000] 7003fd68: [<6037c4d8>] panic+0x164/0x2c6 > [ 0.170000] 7003fda0: [<6037c374>] panic+0x0/0x2c6 > [ 0.170000] 7003fdd8: [<60385a20>] _raw_spin_lock+0x0/0x20 > [ 0.170000] 7003fe48: [<6037c63a>] printk+0x0/0xa0 > [ 0.170000] 7003fe60: [<600d9780>] sys_mount+0x0/0x120 > [ 0.170000] 7003fe78: [<60001fa5>] mount_block_root+0x33a/0x359 > [ 0.170000] 7003fee8: [<602afdd0>] strcpy+0x0/0x30 > [ 0.170000] 7003ff08: [<60002045>] mount_root+0x81/0x85 > [ 0.170000] 7003ff18: [<602b0040>] strncmp+0x0/0x60 > [ 0.170000] 7003ff28: [<6000222c>] prepare_namespace+0x1e3/0x22b > [ 0.170000] 7003ff38: [<600d5350>] sys_dup+0x0/0x80 > [ 0.170000] 7003ff48: [<602afdd0>] strcpy+0x0/0x30 > [ 0.170000] 7003ff58: [<6037b0f5>] kernel_init+0x205/0x3d0 > [ 0.170000] 7003ff60: [<600011ae>] repair_env_string+0x0/0xbd > [ 0.170000] 7003ffd8: [<6001cc91>] new_thread_handler+0x81/0xb0 > > 'Cannot open root device' is completely bogus. It can be opened if I set proper > FS type. > > Thanks! > > -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with undefined - http://www.enigmail.net/ iQIcBAEBAgAGBQJQ33zPAAoJECCuFpLhPd7gPvgP/2ZQdpHB2YEx8qR4fgBp+/Ri BxgVihalu/mbDo3JZGoFc+ll7+KRCeEqQoCd3T1WaBR64DCO0IM4zeDDws4zsYZA 0xQwpUHNKGoAcZdOpPhbk3Eqz3QYETHFrsGrpxrW00X1+MEVNsmtxW59Z1w9JTvH 8tfeYV9u4Z8GzGhN8pxjmGZSDymSOsYrMPdG0L2BLkB0MyAFlRSstI7ccF8CaZDP V6zcAQH0X08FNvY4XcQ7JY4wA+M1O01CDbO063/Co99GGU/F/tmH7awvEk38MA/n nQCotxi2TOCDAePG16Z3b82P5gH30V2CPy55lQsUpyn8lAB72WUuMqkWP1WtkL8E KeKSGreF40VOsPdMP9tdfUkzkWg6/s6GzxMAMpnmJSWDdtYNKkNRz6gBfwK6Rqou tVeg5q3F/MyA00BxsCoNZ5sLWRGd1JJwKppChxJfVMLx4tqaztbZ7GUchVWDFZPQ nCxsFwxVjI07cYKcl8EeP57WKCiE/jzhacg/mvoK+MiKZ9wk3QOC5ZAYxrQ5qF8k C8l3lU8bx9gpQ1p4w901qyPUv9nDdNCKXq70S6kljeZDSquVpzqUbqh/Mfy6Rh8G 20jTSmdRi4IhMSO/GBI6obDkeo7mdfseAjNiOXKPDa3DaWmg1vCWOWaPkTLViXXG iX9ZN24AQ3pwoUFQdgj1 =cyIt -----END PGP SIGNATURE----- _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
