Hello On Mon, 2006-05-29 at 22:17 +0200, Arend Freije wrote: > Hi, > > I'm using Reiser4 for my filesystems on disk (/dev/sda) , and it works > just fine. Recently I bought a second disk (/dev/sdb) for RAID-1 > mirroring. With mdadm I created a degraded raid-1 array on /dev/md/0, > devices missing,/dev/sdb1. After that I created a Reiser4 filesystem on > /dev/md/0 and mounted it at /mnt. Then I copied the data from /dev/sda1 > to /mnt. > All goes well until I umount /mnt, umount simply hangs without any > error. Syslog doesn't report any error. In /proc/mdstat, the array > remains "active sync". Shutting down linux fails because the umount is > still waiting and seems to block other umounts. The umount process > cannot be killed by the root. A hard reset is the only resolution to get > my system functioning normally, but without the raid-1 of course. > The problem seems to emerge only with the combination of RAID and > Reiser4. I've created an ext-2 filesystem on /dev/md/0, and after that > mount ; cp -ax ; umount works without a problem, and the hanging umount > re-appears when using Reiser4 again. > > My questions: > - how can I find the cause of the hanging umount? > - how can I fix it? > > A few details of my linux-box: > > Gentoo Linux, 2.6.16 kernel with Reiser4-for-2.6.16-2.patch.gz
Would you please try whether ftp://ftp.namesys.com/pub/reiser4-for-2.6/2.6.16/reiser4-for-2.6.16-4.patch.gz has the same problem? > i686 AMD Athlon(tm) XP 2400+ > DC4300 SATA-II controller (Silicon Image 3124, libata + sata_sil24 drivers) > 2 x Samsung SP2504C hard disk > > I've posted this issue to the linux-kernel mailing list, but Neil Brown > wrote: > > > This looks very much like a reiser4 problem rather than a raid > > problem, or at least you will need someone very familiar with reiser4 > > to understand what is going on here. > > > > So here's my post. > The call trace of the hanging umount is the following: > > > syslog-ng R running 0 7581 1 7197 (NOTLB) > > umount D C011B591 0 7588 7200 (NOTLB) > > f6643c98 00000000 c1808320 c011b591 f7db5ad0 f4d18c00 003d092a 00000000 > > 00000000 f7db5ad0 c1808320 00000000 f4d18c00 003d092a f6b33540 c1808320 > > 00000000 f4d18c00 003d092a f6b33540 f6b33668 c1808320 00000000 f6643cfc > > Call Trace: > > [<c011b591>] __wake_up_common+0x41/0x70 > > [<c0318346>] io_schedule+0x26/0x30 > > [<c01469fb>] sync_page+0x4b/0x60 > > [<c03184d5>] __wait_on_bit+0x45/0x70 > > [<c01469b0>] sync_page+0x0/0x60 > > [<c014726d>] wait_on_page_bit+0xad/0xc0 > > [<c0136a30>] wake_bit_function+0x0/0x60 > > [<c0136a30>] wake_bit_function+0x0/0x60 > > [<c01ac2f9>] jwait_io+0x59/0x80 > > [<c01c1763>] update_journal_header+0x83/0xb0 > > [<c01c272a>] commit_tx+0xca/0x110 > > [<c01c29a1>] reiser4_write_logs+0x141/0x1e0 > > [<c01b9d91>] commit_current_atom+0x171/0x2c0 > > [<c01baabf>] try_commit_txnh+0x13f/0x1e0 > > [<c01bab94>] commit_txnh+0x34/0xd0 > > [<c01b91bc>] txn_end+0x2c/0x30 > > [<c01b91d0>] txn_restart+0x10/0x30 > > [<c01b920a>] txn_restart_current+0x1a/0x20 > > [<c01b9f1f>] force_commit_atom+0x3f/0x70 > > [<c01ba03a>] txnmgr_force_commit_all+0xea/0x130 > > [<c01fcb0e>] release_format40+0x7e/0x150 > > [<c01b5ea8>] init_context+0x58/0x80 > > [<c01c8b89>] reiser4_put_super+0x89/0xf0 > > [<c01857ed>] invalidate_inodes+0x5d/0x80 > > [<c0170fb6>] generic_shutdown_super+0x156/0x160 > > [<c0171b2d>] kill_block_super+0x2d/0x50 > > [<c0170d90>] deactivate_super+0x60/0x80 > > [<c0188e1f>] sys_umount+0x3f/0x90 > > [<c01171b0>] do_page_fault+0x1c0/0x5a8 > > [<c0159bc1>] sys_munmap+0x51/0x80 > > [<c0188e87>] sys_oldumount+0x17/0x20 > > [<c010306b>] sysenter_past_esp+0x54/0x75 > > > Thanx in advance, > > Arend > > > >
