[DRBD-user] Online Verify and Kernel Panic
roland.friedwagner at wu.ac.at
Tue Oct 12 15:19:25 CEST 2010
Am Montag 11 Oktober 2010 schrieb Fabrice Charlier:
> Hi all,
> We are running a web cluster based on dual primary drbd configuration
> and ocfs2. During each week-end we run a online verify on the drbd
> volume by executing "/sbin/drbdadm verify all" on one node. Last w-e,
> one node (not the one executing the verify command) completely crash
> and we found it this morning with a nice kernel panic message on the
> Anybody else already observed this behavior?
Yes, we (and Michael) did at Sep 2 00:18:01.
The DRBD-User thread concerning this is
"8.3.8 Online Verify Oops on kernel 2.6.34"
DRBD Version: 126.96.36.199
HW: HP DL380G6 (1 x Xeon X5570)
OS: RHEL 5.5 x86_64
Kernel: 2.6.18-194.11.3.el5 #1 SMP Mon Aug 23 15:51:38 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
It was nearly the same address (:drbd:w_e_end_ov_req+0x29/0x136) here
and michael had w_e_end_ov_req+0x36/0x154.
$ gdb drbd.ko -ex 'l *(w_e_end_ov_req+0x29)' -ex q
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Reading symbols from /opt/wu-wien/src/drbd/rpm/centos/drbd8381/BUILD/drbd-188.8.131.52/drbd/drbd.ko...done.
0x5fbf is in w_e_end_ov_req (include/linux/crypto.h:286).
281 return module_name(tfm->__crt_alg->cra_module);
284 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
286 return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
289 static inline unsigned int crypto_tfm_alg_min_keysize(struct crypto_tfm *tfm)
We do an online verify each night.
Does not reproduce since.
Slightly changed config now.
Switched csums-alg and verify-alg from md5 to sha1
(But the reason was concerning lower hash collisions probability by nearly same speed)
Roland.Friedwagner at wu.ac.at Phone: +43 1 31336 5377
IT Services - WU (Vienna University of Economics and Business)
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