[OpenAFS] [ OpenAFS - Cache FileSystem ]

[nicolas prochazka]

Hello,
For your intention,
In Faq, we can read :

The OpenAFS cache manager will detect an unsupported filesystem and
refuse to start.

The following file systems have been reported to work for the AFS client cache:

ext2
ext3
hfs (HP-UX)
xfs (at least on IRIX 6.5)
ufs (Solaris, ?Tru64Unix)


But if I configure cache on zfs on linux ( zfsonlinux.org) ,
i got kernel panic :

[114328.841466] Starting AFS cache scan...
[114349.618208] openafs: Inconsistent file handles within cache
[114349.618238] ------------[ cut here ]------------
[114349.618926] kernel BUG at
/tmp/openafs/src/libafs/MODLOAD-3.11.2-MP/osi_file.c:129!
[114349.620004] invalid opcode: 0000 [#1] SMP
[114349.620004] Modules linked in: libafs(PO) zfs(PO) zunicode(PO)
zavl(PO) zcommon(PO) znvpair(PO) spl(O) kvm_intel kvm
[114349.620004] CPU: 0 PID: 32590 Comm: afsd Tainted: P           O 3.11.2 #1
[114349.620004] Hardware name: NEC Express5800/120Rj-2
[N8100-1407E]/MS-9192-01S, BIOS 1.0.4S31 03/05/2010
[114349.620004] task: ffff88076e5f2000 ti: ffff880559c6c000 task.ti:
ffff880559c6c000
[114349.620004] RIP: 0010:[<ffffffffa02971e8>]  [<ffffffffa02971e8>]
osi_get_fh+0xc8/0xe0 [libafs]
[114349.620004] RSP: 0018:ffff880559c6dc38  EFLAGS: 00010296
[114349.620004] RAX: 000000000000002f RBX: 0000000000000007 RCX:
0000000000000000
[114349.620004] RDX: ffff88082fc0fa88 RSI: ffff88082fc0e178 RDI:
0000000000000246
[114349.620004] RBP: ffff880559c6dc48 R08: 0000000000000400 R09:
ffffffff82716488
[114349.635745] R10: 000000000000041c R11: 000000000000041b R12:
0000000000000000
[114349.635745] R13: 000000000062dd80 R14: ffff88077ad03800 R15:
0000000000000001
[114349.635745] FS:  00007f2afb49c700(0000) GS:ffff88082fc00000(0000)
knlGS:0000000000000000
[114349.635745] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[114349.635745] CR2: 000000007398600c CR3: 00000005583ef000 CR4:
00000000000027e0
[114349.635745] Stack:
[114349.635745]  ffff88077ad03800 0000000300000001 ffff880559c6dc68
ffffffffa02975c0
[114349.635745]  ffff880559c6dc88 ffff88051fdb6900 ffff880559c6dca8
ffffffffa025ddfa
[114349.635745]  ffff880559c6dc98 ffffffff81064565 ffff880559c6dca8
ffffffff81f182cd
[114349.635745] Call Trace:
[114349.635745]  [<ffffffffa02975c0>] osi_InitCacheInfo+0x40/0x80 [libafs]
[114349.635745]  [<ffffffffa025ddfa>] afs_InitCacheInfo+0x2a/0x130 [libafs]
[114349.635745]  [<ffffffff81064565>] ? ns_capable+0x35/0x60
[114349.635745]  [<ffffffff81f182cd>] ? mutex_lock+0x1d/0x50
[114349.635745]  [<ffffffffa02a28de>] afs_syscall_call+0x105e/0x1bf0 [libafs]
[114349.635745]  [<ffffffff8117a2ab>] ? do_last.isra.57+0x11b/0xc60
[114349.635745]  [<ffffffff811775a8>] ? inode_permission+0x18/0x50
[114349.635745]  [<ffffffff81177a8d>] ? link_path_walk+0x23d/0x8e0
[114349.635745]  [<ffffffff8108538a>] ? lg_local_unlock+0x1a/0x20
[114349.635745]  [<ffffffff81189e79>] ? mntput_no_expire+0x49/0x160
[114349.635745]  [<ffffffffa022a9ec>] afs_syscall+0x17c/0x650 [libafs]
[114349.635745]  [<ffffffffa02421f9>] afs_unlocked_ioctl+0x69/0xd0 [libafs]
[114349.635745]  [<ffffffff811cf86f>] proc_reg_unlocked_ioctl+0x3f/0x70
[114349.635745]  [<ffffffff8117d5fb>] do_vfs_ioctl+0x8b/0x4f0
[114349.635745]  [<ffffffff81177376>] ? final_putname+0x26/0x50
[114349.635745]  [<ffffffff8117dab0>] SyS_ioctl+0x50/0x90
[114349.635745]  [<ffffffff81f1bb99>] system_call_fastpath+0x16/0x1b
[114349.635745] Code: 8b 0d 75 2c 02 00 89 05 73 2c 02 00 89 c2 85 c9
79 ac 8b 4d fc 89 0d 60 2c 02 00 eb a1 48 c7 c7 08 42 2b a0 31 c0 e8
3a 40 c7 e1 <0f> 0b 48 c7 c7 e0 41 2b a0 31 c0 e8 2a 40 c7 e1 0f 0b 66
0f 1f
[114349.635745] RIP  [<ffffffffa02971e8>] osi_get_fh+0xc8/0xe0 [libafs]
[114349.635745]  RSP <ffff880559c6dc38>
[114351.110672] ---[ end trace b1f29ac8defa1347 ]---