From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Simmons Date: Thu, 27 Feb 2020 16:08:31 -0500 Subject: [lustre-devel] [PATCH 043/622] lustre: checksum: enable/disable checksum correctly In-Reply-To: <1582838290-17243-1-git-send-email-jsimmons@infradead.org> References: <1582838290-17243-1-git-send-email-jsimmons@infradead.org> Message-ID: <1582838290-17243-44-git-send-email-jsimmons@infradead.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: lustre-devel@lists.lustre.org From: Emoly Liu There are three ways to set checksum support in Lustre. Their order during client mount is: - 1. configure --enable/disable-checksum, this(ENABLE_CHECKSUM) only affects the default mount option and is set in function client_obd_setup(). - 2. lctl set_param -P osc.*.checksums=0/1, when processing llog, this value will be set by osc_checksum_seq_write(). - 3. mount option checksum/nochecksum, this will be checked in ll_options() and be set in client_common_fill_super()-> obd_set_info_async(). This patch fixes one issue in 3. That is if mount option "-o checksum/nochecksum" is specified, checksum will be changed accordingly, no matter what is set by "set_param -P" or the default option; and if no mount option is specified, the value set by "set_param -P" will be kept. Also, test_77k is added to sanity.sh to verify this patch. What's more, a minor initialization issue of cl_supp_cksum_types is fixed. cl_supp_cksum_types should be always initialized no matter checksum is enabled or not. WC-bug-id: https://jira.whamcloud.com/browse/LU-10906 Lustre-commit: e9b13cd1daf9 ("LU-10906 checksum: enable/disable checksum correctly") Signed-off-by: Emoly Liu Reviewed-on: https://review.whamcloud.com/32095 Reviewed-by: Yingjin Qian Reviewed-by: Andreas Dilger Signed-off-by: James Simmons --- fs/lustre/ldlm/ldlm_lib.c | 5 +++-- fs/lustre/llite/llite_internal.h | 3 ++- fs/lustre/llite/llite_lib.c | 23 ++++++++++++++--------- 3 files changed, 19 insertions(+), 12 deletions(-) diff --git a/fs/lustre/ldlm/ldlm_lib.c b/fs/lustre/ldlm/ldlm_lib.c index 7bc1d10..2c0fad3 100644 --- a/fs/lustre/ldlm/ldlm_lib.c +++ b/fs/lustre/ldlm/ldlm_lib.c @@ -355,6 +355,8 @@ int client_obd_setup(struct obd_device *obddev, struct lustre_cfg *lcfg) init_waitqueue_head(&cli->cl_destroy_waitq); atomic_set(&cli->cl_destroy_in_flight, 0); + + cli->cl_supp_cksum_types = OBD_CKSUM_CRC32; /* Turn on checksumming by default. */ cli->cl_checksum = 1; /* @@ -362,8 +364,7 @@ int client_obd_setup(struct obd_device *obddev, struct lustre_cfg *lcfg) * Set cl_chksum* to CRC32 for now to avoid returning screwed info * through procfs. */ - cli->cl_cksum_type = OBD_CKSUM_CRC32; - cli->cl_supp_cksum_types = OBD_CKSUM_CRC32; + cli->cl_cksum_type = cli->cl_supp_cksum_types; atomic_set(&cli->cl_resends, OSC_DEFAULT_RESENDS); /* diff --git a/fs/lustre/llite/llite_internal.h b/fs/lustre/llite/llite_internal.h index d0a703d..6bdbf28 100644 --- a/fs/lustre/llite/llite_internal.h +++ b/fs/lustre/llite/llite_internal.h @@ -479,7 +479,8 @@ struct ll_sb_info { unsigned int ll_umounting:1, ll_xattr_cache_enabled:1, ll_xattr_cache_set:1, /* already set to 0/1 */ - ll_client_common_fill_super_succeeded:1; + ll_client_common_fill_super_succeeded:1, + ll_checksum_set:1; struct lustre_client_ocd ll_lco; diff --git a/fs/lustre/llite/llite_lib.c b/fs/lustre/llite/llite_lib.c index e2c7a4d..eb29064 100644 --- a/fs/lustre/llite/llite_lib.c +++ b/fs/lustre/llite/llite_lib.c @@ -560,13 +560,15 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt) } checksum = sbi->ll_flags & LL_SBI_CHECKSUM; - err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM), - KEY_CHECKSUM, sizeof(checksum), &checksum, - NULL); - if (err) { - CERROR("%s: Set checksum failed: rc = %d\n", - sbi->ll_dt_exp->exp_obd->obd_name, err); - goto out_root; + if (sbi->ll_checksum_set) { + err = obd_set_info_async(NULL, sbi->ll_dt_exp, + sizeof(KEY_CHECKSUM), KEY_CHECKSUM, + sizeof(checksum), &checksum, NULL); + if (err) { + CERROR("%s: Set checksum failed: rc = %d\n", + sbi->ll_dt_exp->exp_obd->obd_name, err); + goto out_root; + } } cl_sb_init(sb); @@ -763,10 +765,11 @@ static inline int ll_set_opt(const char *opt, char *data, int fl) } /* non-client-specific mount options are parsed in lmd_parse */ -static int ll_options(char *options, int *flags) +static int ll_options(char *options, struct ll_sb_info *sbi) { int tmp; char *s1 = options, *s2; + int *flags = &sbi->ll_flags; if (!options) return 0; @@ -832,11 +835,13 @@ static int ll_options(char *options, int *flags) tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM); if (tmp) { *flags |= tmp; + sbi->ll_checksum_set = 1; goto next; } tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM); if (tmp) { *flags &= ~tmp; + sbi->ll_checksum_set = 1; goto next; } tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE); @@ -971,7 +976,7 @@ int ll_fill_super(struct super_block *sb) goto out_free; } - err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags); + err = ll_options(lsi->lsi_lmd->lmd_opts, sbi); if (err) goto out_free; -- 1.8.3.1